WO2008035472A1 - Image displaying device and method, and image processing device and method - Google Patents
Image displaying device and method, and image processing device and method Download PDFInfo
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- WO2008035472A1 WO2008035472A1 PCT/JP2007/057542 JP2007057542W WO2008035472A1 WO 2008035472 A1 WO2008035472 A1 WO 2008035472A1 JP 2007057542 W JP2007057542 W JP 2007057542W WO 2008035472 A1 WO2008035472 A1 WO 2008035472A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/144—Movement detection
- H04N5/145—Movement estimation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0127—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter
- H04N7/0132—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level by changing the field or frame frequency of the incoming video signal, e.g. frame rate converter the field or frame frequency of the incoming video signal being multiplied by a positive integer, e.g. for flicker reduction
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to the screen
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/106—Determination of movement vectors or equivalent parameters within the image
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0435—Change or adaptation of the frame rate of the video stream
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0112—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards corresponding to a cinematograph film standard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
- H04N7/014—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes involving the use of motion vectors
Definitions
- Image display apparatus and method image processing apparatus and method
- the present invention relates to an image display apparatus and method, an image processing apparatus and method having a function of converting a frame rate or a field rate, and more specifically, due to a motion compensation type rate conversion process.
- the present invention relates to an image display device that prevents deterioration in image quality of a moving image in which a plurality of identical images may continue, an image display method using the device, an image processing device, and an image processing method using the device.
- the impulse response of the image display light has a temporal spread, so that the time-frequency characteristics deteriorate, and the spatial frequency characteristics are accordingly reduced. Sexuality is also reduced and motion blur occurs.
- the human gaze follows the moving object smoothly, if the light emission time is long as in the hold type, the motion of the image becomes jerky due to the time integration effect and looks unnatural.
- motion compensation type frame interpolation processing using a motion beta has been proposed in order to improve the quality of moving images without the influence of the jerkiness. According to this, since the moving image itself is captured and the motion of the image is compensated, the resolution is not deteriorated and jerkiness is not generated, and a very natural moving image can be obtained. Furthermore, since the interpolated image signal is formed by motion compensation, it is possible to sufficiently improve the motion blur obstruction caused by the hold-type display method described above.
- an interpolated frame is generated adaptively by motion, thereby increasing the frame frequency of the display image and improving the reduction in spatial frequency characteristics that cause motion blur.
- Techniques for disclosing are disclosed. This is because at least one interpolated image signal to be interpolated between frames of the display image is formed adaptively to the front and rear frame force motion, and the formed interpolated image signal is interpolated between the frames and sequentially displayed. ing.
- FIG. 1 is a block diagram showing a schematic configuration of an FRC drive display circuit in a conventional liquid crystal display device.
- the FRC drive display circuit performs a motion compensation process between frames of an input image signal.
- FRC that converts the number of frames of the input image signal by interpolating the image signal
- the active matrix type liquid crystal display panel 104 having a liquid crystal layer and electrodes for applying a scanning signal and a data signal to the liquid crystal layer, and an image signal subjected to frame rate conversion by the FRC unit 100
- an electrode driving unit 103 for driving the scanning electrodes and the data electrodes of the liquid crystal display panel 104.
- the FRC unit 100 includes a motion vector detection unit 101 that detects motion vector information as well as an input image signal force, and an interpolation frame based on the motion vector information obtained by the motion vector detection unit 101! And an interpolation frame generation unit 102 for generation.
- the motion vector detecting unit 101 may obtain motion vector information using, for example, a block matching method or a gradient method, which will be described later, and in some form on the input image signal. If motion vector information is included, this may be used.
- image data compression-encoded using the MP EG method includes motion vector information of a moving image calculated at the time of encoding, and this motion vector information may be obtained.
- FIG. 2 is a diagram for explaining frame rate conversion processing by the conventional FRC drive display circuit shown in FIG.
- the FRC unit 100 generates an interpolated frame (image colored in gray in the figure) by motion compensation using the motion vector information output from the motion vector detection unit 101, and generates the generated frame.
- the frame rate of the input image signal is converted, for example, from 60 frames per second (60 Hz) to 120 frames per second (120 Hz).
- FIG. 3 is a diagram for explaining interpolation frame generation processing by the motion vector detection unit 101 and the interpolation frame generation unit 102.
- the motion vector detection unit 101 detects the motion vector 105 from the frame # 1 and the frame # 2 shown in FIG. That is, the motion vector detection unit 101 obtains the motion vector 105 by measuring how much and in which direction the frame # 1 and frame # 2 have moved in 1/60 second.
- interpolation frame generation section 102 allocates interpolation vector 106 between frame # 1 and frame # 2 using the obtained motion vector 105.
- An interpolation frame 107 is generated by moving the object (in this case, a car) from the position of frame # 1 to the position 1Z120 seconds later based on this interpolation vector 106.
- motion compensation frame interpolation processing is performed using motion vector information, and the display frame frequency is increased to change the display state of the LCD (hold type display method) to the CRT (impulse type display). Method), and it is possible to improve image quality degradation due to motion blur that occurs during video display.
- motion vector detection is indispensable for motion compensation.
- a block matching method and a gradient method have been proposed as representative methods for this motion vector detection.
- a motion vector is detected for each pixel or small block between two consecutive frames, and each pixel or each small block of the interpolation frame between the two frames is detected using this motion vector.
- the number of frames is converted by correctly compensating for and interpolating an image at an arbitrary position between two frames.
- a moving pixel or block in a certain frame can be detected in a subsequent frame or a frame before that.
- the robot moves with the same amount of movement.
- the area of the ball moves with the same amount of movement in every frame.
- motion vectors are continuous between consecutive frames.
- the motion vector in the next frame can be detected more easily or more accurately.
- the iterative gradient method which is an improved gradient method
- the motion vector of a nearby block that has already been detected in the previous frame or the current frame is used as the initial displacement vector for the detected block, and this is used as the starting point for the gradient method.
- the method of repeating the calculation is used. According to this method, it is possible to obtain an almost accurate motion amount by repeating the gradient method about twice.
- a source of the video signal there are a video of a movie film, a video by computer graphics (CG), and the like in addition to a video shot by a normal television video camera. For this reason, NTSC and PAL television broadcast signals and video disc playback signals often contain movie film or CG video signals.
- video sources of various sources have been mixed due to advances in recording capacity of recording media (eg DVD (digital versatile disc), HD (node disc), etc.) and digital transmission. And there is a case.
- a normal movie film has 24 frames per second (frame), and when this is output to a display with a frame rate of S60Hz, a video with a frame rate of 24Hz is pulled down 2-3, and 2 frames or By outputting the same image three frames at a time, it is converted to a video signal with a frame rate of 6 OHz and output.
- a 30-frame (frame) film movie or CG animation video is output to a display with a frame rate of 60 Hz
- the video with a frame rate of 30 Hz is subject to 2-2 pulldown.
- the same image frame by frame it is converted into a video signal with a frame rate of 60 Hz and output.
- a film movie with 24 frames (frames) per second is output to a display with a frame rate of 50 Hz
- the image with a frame rate of 24 Hz is subjected to 2-2 pulldown processing, and the same image is output two frames at a time. ing.
- film movies and animated images by CG are displayed and output as 60Hz video signals by continuously outputting the same image with many frame rates of original image power ⁇ OHz or less. is doing.
- Frame # 1 force frame # 10 in Fig. 4 represents an image sequence obtained by converting a 24-Hz movie image to 60 Hz using a 2-3 pull-down process.
- Frame # 1 and frame # 2, frame # 3 to frame # 5, frame # 6 and frame # 7, frame # 8 to frame # 10 are the same image.
- the motion vector detection in the next frame is performed by referring to the motion vector detection result in the previous frame as described above.
- the process of performing the above is performed, there is no continuity of motion vectors between the frames, and therefore there is a problem if an error occurs in motion vector detection!
- the force that the motion vector should be detected during this time is the motion between the previous frame # 6 and the frame # 7. Since the spectrum is 0, referencing this may cause the 0 vector to be detected incorrectly. In addition, there is a problem that the image quality of the displayed image is deteriorated due to such erroneous detection of the motion vector.
- the present invention has been made in view of the above problems, and a plurality of identical images such as movie images and animation images resulting from motion compensated frame rate conversion (FRC) processing are continuously displayed. It is an object of the present invention to provide an image display device and method, and an image processing device and method that can prevent image quality deterioration of a moving image that may occur.
- FRC motion compensated frame rate conversion
- the first invention of the present application interpolates an image signal that has undergone motion compensation processing between frames or fields of an input image signal, thereby allowing the number of frames or fields of the input image signal to be interpolated.
- a rate conversion means for converting to a display panel, and when the input image signal is an image signal according to a predetermined genre determined in advance, the movement in the rate conversion means It is characterized by invalidating the compensation process.
- the rate conversion means detects a motion vector information between consecutive frames or fields included in the input image signal, and the detected motion vector information
- An interpolation vector allocating unit that allocates an interpolation vector between the frames or between the fields
- an interpolation image generating unit that generates an interpolation image signal from the allocated interpolation vector
- the generated interpolation And an image interpolating unit for interpolating an interpolated image signal between the frames or the fields.
- the motion vector detected by the motion vector detection unit is set to 0 vector, The motion compensation process is invalidated.
- the interpolation vector assigned by the interpolation vector assigning unit is set to zero. To invalidate the motion compensation process.
- the fifth invention of the present application interpolates an image signal subjected to motion compensation processing between frames or fields of an input image signal, thereby allowing the number of frames or fields of the input image signal to be interpolated. If the input image signal is an image signal according to a predetermined genre determined in advance, the frame of the input image signal is converted. A certain number of wings output the input image signal to the display panel without converting the number of fields.
- the drive frequency of a display panel that displays an image signal can be changed and the input image signal is an image signal according to a predetermined genre
- the input image is an image signal according to a predetermined genre
- the number of frames or the number of fields of the input image signal is interpolated by interpolating the image signal subjected to motion compensation processing between frames or fields of the input image signal.
- the image display device includes rate conversion means for converting the signal to the display panel and performing motion compensation processing between frames or fields of the input image signal to generate a! / ⁇ image signal. And further comprising other rate conversion means for converting the number of frames or the number of fields of the input image signal by inserting, and when the input image signal is an image signal according to a predetermined genre, An image signal having the number of frames or the number of fields converted by another rate conversion means is output to the display panel.
- the other rate conversion means inserts an image signal of the frame or field between frames or fields of the input image signal, whereby the frame of the input image signal is inserted. It is characterized by converting numbers or fields.
- the other rate conversion means interpolates an image signal subjected to linear interpolation processing between frames or fields of the input image signal, so that the input image signal It is characterized by converting the number of frames or fields.
- the other rate conversion means inserts a predetermined monochromatic image signal between frames or fields of the input image signal, thereby It is characterized by converting the number of frames or fields.
- the eleventh invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the image display device includes rate conversion means for outputting to the display panel.
- the compensation intensity is variable.
- the rate conversion means performs weighted addition of an image signal subjected to motion compensation processing and an image signal subjected to linear interpolation processing at a predetermined ratio, whereby an interpolated image is obtained.
- An interpolated image generation unit for generating a signal is provided, and when the input image signal is an image signal according to a predetermined genre, the weighted addition ratio is varied.
- the interpolated image generation unit performs an image signal subjected to the linear interpolation process when the input image signal is an image signal according to a predetermined genre. Is an interpolated image signal, and if the input image signal is not an image signal of a predetermined genre determined in advance, the image signal subjected to the motion compensation processing is used as an interpolated image signal. .
- the fourteenth invention of the present application is characterized in that the predetermined genre is a movie.
- the fifteenth invention of the present application is characterized in that the predetermined genre determined in advance is an animation.
- the sixteenth invention of the present application is characterized in that the rate conversion means converts the frame frequency or field frequency of the input image signal into an integral multiple.
- the seventeenth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the eighteenth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- Image signal related to A step of changing a drive frequency of the display panel in accordance with a frame frequency or a field frequency of the input image signal.
- the nineteenth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the number of frames or the number of fields of the input image signal is converted by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the twenty-first invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- a motion is performed between frames or fields of an input image signal.
- the input image signal is determined in a predetermined genre. Determining whether the input image signal is an image signal according to a predetermined genre, and varying the compensation intensity of the motion compensation process. It is characterized by having.
- the twenty-third invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- An image processing apparatus including rate conversion means, wherein the motion compensation processing in the rate conversion means is invalidated when the input image signal is an image signal according to a predetermined genre.
- the twenty-fourth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- An image processing apparatus comprising rate conversion means, wherein an image signal that has not been subjected to motion compensation processing is inserted between frames or fields of the input image signal, so that the number of frames of the input image signal or
- the image processing apparatus further comprises other rate conversion means for converting the number of fields. It is characterized by converting the number of fields.
- the twenty-fifth aspect of the present invention converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- An image processing apparatus including rate conversion means, wherein when the input image signal is an image signal according to a predetermined genre determined in advance, the compensation intensity of the motion compensation processing in the rate conversion means is varied. It is characterized by.
- the twenty-sixth aspect of the present invention converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal. And determining whether the input image signal is an image signal according to a predetermined genre determined in advance. And a step of invalidating the motion compensation processing when it is determined that the input image signal is an image signal according to a predetermined genre determined in advance.
- the twenty-seventh aspect of the present invention converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the twenty-eighth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- the twenty-ninth invention of the present application converts the number of frames or the number of fields of the input image signal by interpolating the image signal subjected to the motion compensation process between frames or fields of the input image signal.
- a step of determining whether the input image signal is an image signal according to a predetermined genre determined in advance and a step of determining whether the input image signal is a predetermined genre determined in advance. If the input image signal is determined to be an image signal, the number of frames or fields of the input image signal is converted by inserting a predetermined monochrome image signal between frames or fields of the input image signal. And a step.
- a motion is performed between frames or fields of an input image signal.
- the input image signal is determined in a predetermined genre. Determining whether the input image signal is an image signal according to a predetermined genre, and varying the compensation intensity of the motion compensation process. It is characterized by having.
- the interpolation processing by motion compensation is not performed, so that the display image is displayed. Image quality degradation can be effectively prevented.
- FIG. 1 is a block diagram showing a schematic configuration of an FRC drive display circuit in a conventional liquid crystal display device.
- FIG. 2 is a diagram for explaining frame rate conversion processing by the conventional FRC drive display circuit shown in FIG. 1.
- FIG. 3 is a diagram for explaining interpolation frame generation processing by a motion vector detection unit and an interpolation frame generation unit.
- FIG. 4 is a diagram for explaining an image sequence when a 24 Hz film movie is converted to 60 Hz by 2-3 pulldown processing.
- FIG. 5 is a block diagram illustrating a configuration example of a frame rate conversion unit included in the image display device of the present invention.
- FIG. 6 is a diagram for explaining an example of interpolation frame generation processing by a frame generation unit
- FIG. 7 is a block diagram showing a configuration example of a main part of the liquid crystal display device according to the first embodiment of the present invention.
- FIG. 8 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to a second embodiment of the present invention.
- FIG. 9 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to a third embodiment of the present invention. It is.
- FIG. 10 is a diagram showing a relationship between input data and output data according to the third embodiment of the present invention.
- FIG. 11 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to a fourth embodiment of the present invention.
- FIG. 13 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to a fifth embodiment of the present invention.
- FIG. 15 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to a sixth embodiment of the present invention.
- ⁇ 17] is a block diagram showing an example of the configuration of the main part of the FRC unit according to the seventh embodiment of the present invention.
- ⁇ 18] is a flowchart for explaining an example of an image display method by the image display device of the present invention. .
- FIG. 19 is a flowchart for explaining another example of the image display method by the image display device of the present invention.
- FIG. 20 is a flowchart for explaining another example of the image display method by the image display device of the present invention.
- FRC Frame rate conversion
- 11 Vector detection section
- 11a Luminance signal extraction section
- l ib Preprocessing filter
- 11c Motion detection frame memory
- id Initial vector memory
- 12 ... frame generation unit 12a ... frame memory for interpolation, 12b, 102 ... interpolation frame generation unit
- 12c tie Frame memory for frame base conversion, 12d ... time base conversion unit, 12e ... compensation strength variable unit, 14 ... genre judgment unit, 15 ... control unit, 16 ... switching unit, 17 ...
- FIG. 5 is a block diagram showing a configuration example of a motion compensated frame rate conversion unit provided in the image display apparatus of the present invention.
- 10 is a frame rate conversion unit (hereinafter referred to as FRC unit), and the FR
- the C section 10 corresponds to the rate conversion means of the present invention, and a vector detection section 11 that detects a motion vector between two consecutive frames included in the input image signal, and based on the detected motion vector!
- the frame generation unit 12 generates an interpolated frame (interpolated image).
- the vector detection unit 11 shows an example in which the iterative gradient method is used for motion vector detection, but is not limited to this iterative gradient method, and a block matching method or the like may be used.
- the feature of the iterative gradient method is that motion vectors can be detected in units of blocks, so that several types of motion amounts can be detected, and motion vectors can be detected even in small-sized moving objects. it can.
- the circuit configuration can be realized on a small scale compared to other methods (such as the block matching method).
- this iterative gradient method a method is used in which the gradient method is repeated using the motion vector of a nearby block already detected as an initial deviation vector for the detected block. According to this method, it is possible to obtain an almost accurate motion amount by repeating the gradient method about twice.
- a vector detection unit 11 includes a luminance signal extraction unit 11a that extracts a luminance signal ( ⁇ ⁇ signal) from an input image signal (RGB signal), and an LPF multiplied by the extracted Y signal. Pre-processing filter l ib to limit the bandwidth, frame memory 11c for motion detection, initial vector memory l id to store initial vector candidates, and motion vector detection between frames using iterative gradient method And a motion vector detection unit l ie for performing interpolation and an interpolation vector evaluation unit 1 If for allocating an interpolation vector between frames based on the detected motion vector.
- the FRC unit 10 corresponds to the rate conversion means of the present invention
- the motion vector detection unit l ie corresponds to the motion vector detection unit of the present invention
- the interpolation vector evaluation unit 1 If is the present invention. This corresponds to the vector allocation part.
- the motion vector detection unit l ie selects, as an initial vector, a motion vector that is the closest to the motion vector of the intermediate target block to be detected in the initial vector candidate stored in the initial vector memory l id. That is, the initial vector is selected by the block matching method for the medium force of the already detected motion vector (initial vector candidate) in the block near the detected block. Then, the motion vector detection unit lie detects a motion vector between the previous frame and the current frame by gradient method calculation with the selected initial vector as a starting point.
- the interpolation vector evaluation unit 1 If evaluates the motion vector detected by the motion vector detection unit l ie, assigns an optimal interpolation vector to the inter-frame interpolation block based on the evaluation result, and Output to the frame generator 12.
- the frame generation unit 12 includes an interpolation frame memory 12a for accumulating two input frames (previous frame and current frame), and two input frames from the interpolation frame memory 12a and interpolation.
- Vector evaluation unit 1 Interpolation frame generation unit 12b that generates an interpolation frame based on the interpolation vector from If, and frame memory for time base conversion for storing input frames (previous frame and current frame) 12c and frame memory for time base conversion 12c Insert an interpolated frame from the interpolated frame generator 12b into an output frame and output it And a time base conversion unit 12d that generates an image signal (RGB signal).
- interpolation frame generation unit 12b corresponds to the interpolation image generation unit of the present invention
- time base conversion unit 12d corresponds to the image interpolation unit of the present invention
- FIG. 6 is a diagram for explaining an example of the interpolation frame generation process by the frame generation unit 12.
- the interpolation frame generator 12b extends the interpolation vector V assigned to the interpolation block to the previous frame and the current frame, and interpolates each pixel in the interpolation block using pixels near the intersection with each frame. .
- the brightness of point A is calculated from the three nearby points.
- the brightness of point B is calculated from the three points nearby.
- the brightness of point P is interpolated from the brightness of points A and B.
- the brightness of point P can be the average of the brightness of point A and the brightness of point B, for example.
- the interpolation frame F generated as described above is sent to the time-base conversion unit 12d.
- the time base conversion unit 12d performs an interpolation frame F between the previous frame F and the current frame F.
- the input image signal (60 frames Z seconds) can be converted into a motion compensated output image signal (120 frames Z seconds), which is output to the display panel to reduce motion blur and Quality can be improved.
- the image display device of the present invention includes the FRC unit 10 shown in FIG. 5, and the input image signal is a plurality of sheets by 2-3 pulldown processing or 2-2 pulldown processing, such as movie video or animation video.
- the main purpose is to disable the motion compensation processing in the FRC section 10 for the entire screen (entire screen) to prevent image quality degradation caused by the FRC processing.
- the present invention is applicable to all image display devices having hold-type display characteristics such as a liquid crystal display, an organic EL display, and an electrophoretic display. However, in each of the following embodiments, a liquid crystal display is used as a display panel. A case where the present invention is applied to a liquid crystal display device using a panel will be described as a representative example.
- the output of the motion vector detection unit l ie is forcibly set to 0 vector.
- FIG. 7 is a block diagram showing a configuration example of a main part of the liquid crystal display device according to the first embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, a control unit 15, The switching unit 16, the 0 vector unit 17, the electrode driving unit 18, and the liquid crystal display panel 19 are provided.
- the switching unit 16 is provided between the motion vector detection unit l ie and the interpolation vector evaluation unit l lf in the FRC unit 10, and in accordance with instructions from the control unit 15, the motion vector from the motion vector detection unit l ie. Switch to 0 vector 17.
- the genre determination unit 14 genre type of video to be displayed on the liquid crystal display panel 19 based on genre information included in EPG (Electronic Program Guide) data separated and extracted from, for example, broadcast data camera Determine.
- Genre information is, for example, the ability to use information contained in part of EPG data transmitted by being superimposed on broadcast data of digital terrestrial broadcasting, BS digital broadcasting, and CS digital broadcasting.
- the information is not limited to the case where the information is separated and acquired from broadcast data.
- an external device such as a DV D player or a Blu-ray Disc player
- the content added to the media A flag indicating the content (for example, an identification code indicating “movie”) may be read out and detected by the genre determination unit 14.
- the broadcast data is not limited to digital broadcast, and genre information can be acquired even if the broadcast data is analog broadcast.
- ADAMS-EPG is EPG information transmitted by being superimposed on an analog broadcast signal.
- the genre information of the video content can be obtained at the same time as the input video data, or can be obtained with a different route power from the video data.
- XMLTV is an application for automatically acquiring a TV program table published on the Web, converting it to XML, and outputting it as XML. Using this information, the video information is displayed on the network. You can also get
- the genre code as genre information is, for example, in the terrestrial digital broadcast standard.
- the liquid crystal display device determines which genre the input image signal to be displayed belongs to, and controls the motion compensation processing of the FRC unit 10 according to the determination result. .
- the liquid crystal display panel 19 is an active matrix liquid crystal display having a liquid crystal layer and electrodes for applying a scanning signal and a data signal to the liquid crystal layer.
- the electrode driving unit 18 is a display driver for driving the scanning electrodes and data electrodes of the liquid crystal display panel 19 based on the image signal whose frame rate has been converted by the FRC unit 10.
- the control unit 15 includes a CPU for controlling the above-described units. When the genre determination unit 14 determines that the input image signal is an image signal according to a predetermined genre, motion compensation in the FRC unit 10 is performed. Control to invalidate the process.
- the drive frequency of the liquid crystal display panel 19 is the frame frequency converted by the FRC unit 10. Accordingly, when the image signal force FRC unit 10 input at a frame frequency of 60 Hz is converted to a frame frequency of 12 OHz, the drive frequency of the liquid crystal display panel 19 is 12 OHz. However, when frame frequency conversion by FRC processing is not performed and the input image signal is displayed and output as it is, the drive frequency of the liquid crystal display panel 19 becomes the frame frequency of the input image signal.
- the control unit 15 switches the switching unit 16 to the 0 vector 17 side. By switching, the motion vector detected by the motion vector detection unit ie is forcibly replaced with 0 solids.
- the switching unit 16 is switched to the motion vector detection unit ie side. Then, the motion vector detected by the motion vector detection unit lie is input to the interpolation vector evaluation unit 1 If.
- motion compensation type FRC processing can improve the quality of a moving image, and a plurality of identical images such as movies and animations can be linked.
- the motion vector is set to 0 vector and the motion compensation process is disabled. It eliminates errors and can effectively prevent image quality degradation caused by motion-compensated FRC processing.
- Interpolation vector evaluation unit 1 when the input image signal is an image signal related to a predetermined genre such as a movie or an animation, in order to invalidate the motion compensation processing of the FRC unit 10, Interpolation vector evaluation unit 1 The interpolation vector from If is set to 0 vector so that interpolation between pixels at different positions does not occur.
- FIG. 8 is a block diagram illustrating an exemplary configuration of a main part of the liquid crystal display device according to the second embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, a control unit 15, The switching unit 16, the 0 vector unit 17, the electrode driving unit 18, and the liquid crystal display panel 19 are provided.
- the switching unit 16 is provided between the interpolation vector evaluation unit 1 If and the interpolation frame generation unit 12b in the FRC unit 10, and in accordance with an instruction from the control unit 15, the interpolation from the interpolation vector evaluation unit 1 If. Switch the vector to 0 vector 17.
- the control unit 15 switches the switching unit 16 to the 0 vector 17 side. Switch to set the interpolation vector assigned by the interpolation vector evaluation unit 1 If to 0 vector.
- the switching unit 16 is switched to the interpolation vector evaluation unit 1 If side. Interpolation vector evaluation unit 1 The interpolation vector assigned by If is input to the interpolation frame generation unit 12b.
- the third embodiment of the present invention provides a path for bypassing the FRC unit 10, and when the input image signal is an image signal according to a predetermined genre such as a movie or an animation, The input image signal is input to the detour path side, and the drive frequency of the liquid crystal display panel 19 is changed in accordance with the frame frequency of the input image signal.
- a predetermined genre such as a movie or an animation
- the frame rate conversion is not performed and the input image signal is switched to be displayed and output on the liquid crystal display panel 19 as it is.
- FIG. 9 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to the third embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, a control unit 15, The switching unit 16, the electrode driving unit 18, the liquid crystal display panel 19, and a path 20 for bypassing the FRC unit 10 are provided.
- the switching unit 16 is provided in the preceding stage of the FRC unit 10 and switches between input force of the input image signal to the FRC unit 10 and input to the path 20 in accordance with an instruction from the control unit 15.
- the control unit 15 switches the switching unit 16 to the path 20 side. In other words, the FRC part 10 is bypassed.
- the switching unit 16 is switched to the FRC unit 10 side, and the input image signal FRC processing (motion compensation frame interpolation processing) is performed on the image.
- the switching unit 16 may be provided after the FRC unit 10 so that the output signal of the FRC unit 10 and the output signal of the path 20 are switched and output to the liquid crystal display panel 19.
- control unit 15 can change the drive frequency of the liquid crystal display panel 19, and when an image signal related to the genre of “movie” or “anime Z special effects” is input, Input to the path 20 side, and the drive frequency of the liquid crystal display panel 19 is changed in accordance with the frame frequency of the input image signal.
- FIG. 10 is a diagram showing the relationship between input data and output data according to the third embodiment of the present invention.
- 10A shows the input data to the path 20
- FIG. 10B shows the output data from the path 20.
- FIG. As shown in Fig. 10 (A), when an input image signal (input data) is input to path 20 at a frame frequency of 60 Hz, the display time per frame is about 16.7 ms.
- the control unit 15 controls the electrode driving unit 18 which is a display driver to control the liquid crystal display.
- the drive frequency of the display panel 19 is changed from 120 Hz to 60 Hz, and the input data is output from the path 20 without changing the frame rate at 60 Hz as shown in FIG.
- the liquid crystal display panel 19 displays the frame output from the path 20 without conversion of the number of frames at a driving frequency of 60 Hz, the display time per frame at this time should be about 16.7 ms. Become.
- motion compensation type FRC processing can improve the quality of a moving image, and a plurality of identical images such as movies and animations can be continued. If a moving image is input, the FRC process is bypassed and frame rate conversion itself is prohibited, thereby detecting motion vector detection errors and motion compensation errors due to image discontinuities. Therefore, it is possible to effectively prevent image quality degradation caused by motion compensation FRC processing.
- the fourth embodiment of the present invention provides a path for bypassing the FRC unit 10, and when the input image signal is an image signal according to a predetermined genre such as a movie or an animation, the input image A signal is input to the detour path side, the input image signal is accumulated in a memory on the path, and an image signal of the same frame is repeatedly read out from the memory at a plurality of times at a high speed to convert the frame rate. That is, when a content image signal according to a predetermined genre determined in advance is input, the frame rate conversion is performed by continuously outputting the input image signal at a high speed without performing the motion compensation type frame rate conversion. The display is switched to display output to the liquid crystal display panel 19.
- a predetermined genre such as a movie or an animation
- FIG. 11 is a block diagram illustrating an exemplary configuration of a main part of a liquid crystal display device according to the fourth embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, and a control unit 15.
- the switching unit 16 the electrode driving unit 18, the liquid crystal display panel 19, a path 20 for bypassing the FRC unit 10, and a memory 21 on the path 20.
- the switching unit 16 is provided in front of the FRC unit 10 and switches between input force of the input image signal to the FRC unit 10 and input to the path 20 in accordance with an instruction from the control unit 15.
- the control unit 15 switches the switching unit 16 to the path 20 side. In other words, the processing of the FRC unit 10 is bypassed and the input image signal is stored in the memory 21. That After that, the same frame is repeatedly read out from the memory 21 several times and the frame insertion process is performed.
- the switching unit 16 is switched to the FRC unit 10 side to input image FRC processing (motion compensation frame interpolation processing) is performed on the signal.
- the switching unit 16 may be provided after the FRC unit 10 so that the output signal of the FRC unit 10 and the output signal of the memory 21 are switched and output to the liquid crystal display panel 19.
- the drive frequency of the liquid crystal display panel 19 is not changed and remains 120 Hz.
- the control unit 15 and the memory 21 insert the image signal of the previous or subsequent frame between the frames of the input image signal.
- means for converting the number of frames of the input image signal is configured. That is, the frame rate (the number of frames) of the display image signal input to the electrode driving unit 18 is always the same.
- FIG. 12 is a diagram showing the relationship between input data and output data according to the fourth embodiment of the present invention.
- (A) in FIG. 12 shows input data to the path 20, and (B) in FIG. 12 shows output data from the path 20.
- the display time per frame is about 16.7 ms.
- the input data is stored in the memory 21 and the frame image signal (frame A in the figure) read repeatedly from the memory 21 at twice the speed as shown in FIG. 12 (B). Is output.
- the liquid crystal display panel 19 displays the output data in which the image signal of the same frame is inserted at the drive frequency of 120 Hz. Since the number of frames is converted by repeatedly reading the same frame twice, the display time per frame at this time is about 8.3 ms.
- a path for bypassing the FRC unit 10 is provided, and when the input image signal is an image signal according to a predetermined genre such as a movie or an animation, the input image A signal is input to the detour path side, the input image signal is input to a linear interpolation processing unit on the path, and the image signal subjected to linear interpolation is interpolated. That is, when an image signal of content related to a predetermined genre determined in advance is input, frame rate conversion is performed by performing linear interpolation processing rather than performing interpolation processing by motion compensation. To switch to.
- a predetermined genre such as a movie or an animation
- FIG. 13 is a block diagram showing a configuration example of a main part of a liquid crystal display device according to the fifth embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, and a control unit 15.
- the switching unit 16, the electrode driving unit 18, the liquid crystal display panel 19, a path 20 for bypassing the FRC unit 10, and a linear interpolation processing unit 22 on the path 20 are configured.
- the switching unit 16 is provided before the FRC unit 10 and switches between input of the input image signal to the FRC unit 10 and input to the path 20 in accordance with an instruction from the control unit 15.
- the control unit 15 switches the switching unit 16 to the path 20 side. In other words, the FRC unit 10 is bypassed, and the input image signal is input to the linear interpolation processing unit 22.
- the linear interpolation processing unit 22 inserts an interpolation frame that has undergone linear interpolation between frames.
- the switching unit 16 is switched to the FRC unit 10 side, FRC processing (motion compensation frame interpolation processing) is performed on the input image signal.
- the switching unit 16 may be provided after the FRC unit 10 so that the output signal of the FRC unit 10 and the output signal of the linear interpolation processing unit 22 are switched and output to the liquid crystal display panel 19. .
- the drive frequency of the liquid crystal display panel 19 is not changed and remains 120 Hz. That is, the frame rate (the number of frames) of the display image signal input to the electrode drive unit 18 is always the same.
- the linear interpolation processing unit 22 interpolates an image signal subjected to linear interpolation between frames of the input image signal.
- the frame of the input image signal It constitutes a means for converting numbers.
- the linear interpolation processing is described in the above-mentioned document (Tatsuro Yamauchi, “Television conversion”, Journal of Television Society, Vol. 45, No. 12, pp. 1534-1543 (1991)).
- the signal strength of the previous frame and the current frame is also obtained by interpolation by linear interpolation using the frame internal ratio ⁇ .
- FIG. 14 is a diagram showing the relationship between input data and output data according to the fifth embodiment of the present invention.
- ( ⁇ ) in FIG. 14 shows input data to the path 20, and
- ( ⁇ ) in FIG. 14 shows output data from the path 20.
- the display time per frame is about 16.7 ms.
- the input data is input to the linear interpolation processing unit 22, and as shown in FIG. 14B, the image signal (in this case, between frames A and B) subjected to linear interpolation processing ( In the figure, frame A + B) is interpolated and output.
- the liquid crystal display panel 19 displays the output data in which the image signal subjected to the linear interpolation processing is interpolated at a drive frequency of 120 Hz. Since the number of frames is converted by interpolation of the image signal subjected to linear interpolation processing, the display time per frame at this time is about 8.3 ms.
- a path for bypassing the FRC unit 10 is provided, and when the input image signal is an image signal related to a predetermined genre such as a movie or animation, the input image A signal is input to the detour path side, the input image signal is input to a black level signal insertion processing unit on the path, and a predetermined monochromatic image signal such as a black level signal is inserted.
- a monochrome image insertion process is performed rather than an interpolation process based on motion compensation. By switching the processing, the frame rate conversion is performed.
- FIG. 15 is a block diagram illustrating an exemplary configuration of a main part of a liquid crystal display device according to the sixth embodiment of the present invention.
- the liquid crystal display device includes an FRC unit 10, a genre determination unit 14, and a control unit 15.
- the switching unit 16 the electrode driving unit 18, the liquid crystal display panel 19, a path 20 for bypassing the FRC unit 10, and a black level signal insertion processing unit 23 on the path 20.
- the switching unit 16 is provided before the FRC unit 10 and switches whether to input the input image signal to the force path 20 that inputs the FRC unit 10 in accordance with an instruction from the control unit 15.
- the control unit 15 switches the switching unit 16 to the path 20 side.
- the FRC unit 10 is bypassed and the input image signal is input to the black level signal insertion processing unit 23.
- the black level signal insertion processing unit 23 compresses the input image signal on the time axis (frame rate conversion) using a memory, and inserts a predetermined monochrome image signal such as a black level signal between the input frames.
- the switching unit 16 is switched to the FRC unit 10 side to FRC processing (motion compensation frame interpolation processing) is performed on the signal.
- FRC processing motion compensation frame interpolation processing
- the switching unit 16 may be provided at the subsequent stage of the FRC unit 10 so that the output signal of the FRC unit 10 and the output signal of the black level signal insertion processing unit 23 are switched and output to the liquid crystal display panel 19.
- the drive frequency of the liquid crystal display panel 19 is not changed and remains 120 Hz. That is, the frame rate (the number of frames) of the display image signal input to the electrode drive unit 18 is always the same.
- the black level signal insertion processing unit 23 determines a predetermined monochrome image signal such as a black level signal between frames of the input image signal. Is inserted to constitute means for converting the number of frames of the input image signal.
- the electrode driver 18 may be configured to apply a black writing voltage to the liquid crystal display panel 19 for a predetermined period (1Z120 seconds in this example). .
- FIG. 16 is a diagram showing the relationship between input data and output data according to the sixth embodiment of the present invention.
- (A) in FIG. 16 shows the input data to route 20, and (B) in FIG. Shows the output data.
- the display time per frame is about 16.7 ms.
- the above input data is input to the black level signal insertion processing unit 23, and as shown in (B) of FIG. 16, the black level signal (colored black in the figure) between frames (here, between frame A and frame B). Frame) is inserted and output.
- the liquid crystal display panel 19 displays the output data with the black level signal inserted at a drive frequency of 120 Hz. Since the number of frames is converted by inserting the black level signal, the display time per frame at this time is about 8.3 ms.
- the input image signal is an image signal related to a predetermined genre such as a movie or an animation
- a plurality of original images of the input frame with a predetermined luminance ratio are used.
- the compensation intensity of the motion compensation process in the interpolation frame generation unit is variable. Configured to do. Specifically, an image signal that has undergone motion compensation processing. And an image signal that has been subjected to linear interpolation processing are weighted and added at a predetermined ratio to provide an interpolation frame generation unit that generates an interpolation frame, and when a pull-down converted image signal is input, Variable weighted addition ratio.
- FIG. 17 is a block diagram showing a configuration example of a main part of the FRC unit 10 according to the seventh embodiment of the present invention.
- the frame generation unit 12 of the FRC unit 10 includes an interpolation frame memory 12a, an interpolation
- the frame generation unit 12b is further provided with a compensation strength varying unit 12e that varies the compensation strength of the motion compensation processing in the FRC unit 10.
- V is the interpolation vector
- ⁇ is the frame interpolation ratio
- 8 is the compensation strength (weighted addition ratio).
- frame interpolation processing methods for example, frame interpolation by linear interpolation between two frames and frame interpolation using motion vectors (motion compensation interpolation) are known.
- the former obtains an interpolated frame by linear interpolation of the signal power of the previous frame and the current frame with the frame interpolation ratio ⁇ . Therefore, if this linear interpolation is used, it is possible to prevent image quality degradation due to motion compensation errors in FRC processing.
- the interpolation vector V is detected from the motion vector between the previous frame image and the current frame image, and its value (inner vector) V) divided by the frame interpolation ratio a a
- the weighted addition of the signal obtained by shifting the previous frame image by the size of V and the current frame image shifted by (1) V obtain. If this motion compensation interpolation is used, the moving image itself is captured and compensated, so that it is possible to obtain a good image quality without degradation in resolution, but this process results in degradation of the image quality of the pull-down video. There is.
- the frame generation unit 12 is provided with the compensation intensity varying unit 12e.
- the compensation intensity varying unit 12e varies the weighted addition ratio ⁇ 8 when the genre determining unit 14 determines that the input image signal is an image signal related to the genre of “movie” or “animation / special effects”.
- This weighted addition ratio) 8 is a ratio when the weighted addition of the image signal subjected to the motion compensation process and the image signal subjected to the linear interpolation process.
- the interpolation frame generation unit 12b according to this embodiment generates an interpolation frame by performing weighted addition of linear interpolation and motion compensation interpolation according to the weighted addition ratio j8.
- the compensation intensity varying unit 12e has an input image signal of "movie” or "anime Z special effects".
- the weighted addition ratio is set to
- 8 0, and image signals subjected to linear interpolation are used as interpolation frames to prevent image quality degradation due to motion compensation errors.
- the input image signal is an image signal of a genre other than “Movie” or “Animation Z Special Effects”
- the weighted addition ratio is set to 1 and the image signal subjected to motion compensation processing is used as an interpolation frame. Improve the quality of moving images.
- the weighted addition ratio / 3 can be variably set arbitrarily, it may be set to a value approximately in the middle of 0 to 1. As a result, while performing motion compensation in the interpolated frame image, it is possible to control so as to suppress degradation in image quality due to motion compensation errors. Both image quality degradation due to motion blur and image quality degradation due to motion compensation errors can be controlled. Can be appropriately improved.
- FIG. 18 is a flowchart for explaining an example of an image display method by the image display device of the present invention.
- the image display device determines whether or not the content type (genre) of the input image signal is “movie” based on the acquired genre information (step S1).
- the motion compensation process of the FRC unit 10 is invalidated by setting the motion vector or the interpolation vector to 0 vector (step S2). If it is determined in step S1 that the content type (genre) of the input image signal is not “movie” (NO), the content type (genre) of the input image signal is “animation Z”. It is determined whether it is “special effects” (step S3).
- step S3 If it is determined in step S3 that it is "Anime Z special effects" (in the case of YES), the motion compensation processing of the FRC section 10 is invalidated by setting the motion vector or interpolation vector to 0 vector. (Step S2), if it is determined that “Animation Z Special Effects” is not OK (NO :), the motion compensation process of the FRC section 10 is executed as usual (Step S4). In this way The image signal with the frame frequency converted is displayed and output from the liquid crystal display panel 19 (step S5).
- FIG. 19 is a flowchart for explaining another example of the image display method by the image display device of the present invention.
- the image display device determines whether or not the content type (genre) of the input image signal is “movie” based on the acquired genre information (step Sl l). (In the case of YES), the motion compensation frame interpolation process of the FRC unit 10 is bypassed and the input image signal is input to another path 20 (step S12).
- predetermined monochromatic colors such as inter-frame interpolation of image signals subjected to linear interpolation processing, inter-frame insertion of image signals of the same frame, black level signal, etc.
- step S 11 If it is determined in step S 11 that the content type (genre) of the input image signal is not “movie”! / (NO), the content type (genre) of the input image signal is “ It is determined whether it is “animation / special effects” (step S13). If it is determined in step S 13 that it is “Anime Z special effects” (in the case of YES), the motion compensation frame interpolation process of the FRC section 10 is bypassed and the input image signal is input to another path 20. (Step S12), interpolating image signals that have undergone linear interpolation processing, interframe insertion of image signals of the same frame, and interframe insertion of predetermined monochromatic image signals such as black level signals!
- step S13 If it is determined in step S13 that it is not “animation Z special effects” (NO), the FRC unit 10 outputs an image signal subjected to interpolation processing by motion compensation (step S14). Finally, an image is displayed and output from the liquid crystal display panel 19 (step S15).
- FIG. 20 is a flowchart for explaining another example of the image display method by the image display device of the present invention.
- the image display device determines whether or not the content type (genre) of the input image signal is “movie” based on the acquired genre information (step S21). If YES), the compensation strength of the motion compensation process in the FRC section 10 is varied (weak) (step S22). If it is determined in step S21 that the content type (genre) of the input image signal is not “movie” (NO), the content type (genre) of the input image signal is “anime Z special effects”. It is determined whether or not there is (step S23).
- step S23 If it is determined in step S23 that it is "Anime Z special effects" (in the case of YES), the compensation strength of the motion compensation process in the FRC unit 10 is varied (weak) (step S22). Also, if it is determined in step S23 that “Anime / SFX” is not! / (In the case of NO), the compensation strength of the motion compensation processing in the FRC unit 10 is increased as usual (step S24). . The image signal with the frame frequency converted in this way is displayed and output from the liquid crystal display panel 19 (step S25).
- the motion compensation processing in the frame rate conversion (FRC) unit can be invalidated and displayed and output, so that it is possible to effectively prevent image quality degradation due to motion compensation errors.
- the input image signal is not limited to a television broadcast signal, but may be an image signal reproduced from an external media.
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Description
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Priority Applications (3)
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| EP07740978A EP2066122A4 (en) | 2006-09-20 | 2007-04-04 | Image display device and method and image processing device and method |
| CN200780034406.XA CN101518066B (zh) | 2006-09-20 | 2007-04-04 | 图像显示装置及方法、图像处理装置及方法 |
| US12/440,222 US8780267B2 (en) | 2006-09-20 | 2007-04-04 | Image displaying device and method and image processing device and method determining content genre for preventing image deterioration |
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| JP2006253892A JP4181592B2 (ja) | 2006-09-20 | 2006-09-20 | 画像表示装置及び方法、画像処理装置及び方法 |
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| CN101635789B (zh) * | 2008-07-21 | 2012-12-19 | 奇美电子股份有限公司 | 动态图像补偿装置及方法 |
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- 2007-04-04 CN CN200780034406.XA patent/CN101518066B/zh not_active Expired - Fee Related
- 2007-04-04 EP EP07740978A patent/EP2066122A4/en not_active Withdrawn
- 2007-04-04 EP EP12003033.3A patent/EP2487900A3/en not_active Withdrawn
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| CN101635789B (zh) * | 2008-07-21 | 2012-12-19 | 奇美电子股份有限公司 | 动态图像补偿装置及方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100039557A1 (en) | 2010-02-18 |
| JP2008078857A (ja) | 2008-04-03 |
| EP2066122A4 (en) | 2012-04-11 |
| CN101518066B (zh) | 2015-07-08 |
| EP2487900A3 (en) | 2013-05-15 |
| CN101518066A (zh) | 2009-08-26 |
| EP2066122A1 (en) | 2009-06-03 |
| US8780267B2 (en) | 2014-07-15 |
| EP2487900A2 (en) | 2012-08-15 |
| JP4181592B2 (ja) | 2008-11-19 |
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