JPH0937294A - Video signal processing device - Google Patents

Abstract

(57) Abstract: A portion including a memory portion and the like, provided with a function of performing image trimming display by processing a video signal using a memory portion to which trimming graphic data is written and read. It is assumed that simplification of the configuration is achieved. SOLUTION: An operation state in which writing and reading are sequentially performed for a plurality of frame periods in a video signal, and an operation state in which writing and reading trimming graphic data for the video signal are performed are selectively performed in a memory unit. Memory operation control means 20, 26, 4
5, the data discriminating section 36 for discriminating the content of the trimming graphic data read from the memory section 24, and the discriminating output signal obtained from the data discriminating section 36, according to the memory section 2
A trimming image video signal representing an image obtained by selectively taking out the trimming graphic data and the video signal read from 4 and trimming the image represented by the video signal with the graphic represented by the trimming graphic data is obtained. And a signal selection unit 13 for obtaining the signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a state in which a desired operation is taken out of a video signal, for example, a unit division period which is a frame period, and an image represented by the video signal. A video signal processing device that obtains a video signal for a trimming image representing an image obtained by performing trimming with a graphic represented by a trimming graphic information signal.

[0002]

2. Description of the Related Art In an image display device which is supplied with a video signal and which displays an image represented by the supplied video signal, a unit period of a video signal corresponding to one frame image of continuously displayed moving images. , For example, one frame period (or one field period) is taken out, and a memory means prepared for image capture, that is,
Storing the image signal in the memory means for image capture, arbitrarily reading one frame period of the video signal from the memory means for image capture, and displaying the image represented by it as a still image, or on the paper about the image represented by it. It is proposed to print on. In particular, an image display device having a function of printing an image stored in the image capturing memory means, for example, an image represented by one frame period of a video signal on a paper surface is a mechanism for printing. Is called a "video printer" and is called, for example, an image display device with a video printer.

In such an image display device with a video printer, the extraction of one frame period of the video signal representing the image to be printed on the paper is usually based on the video signal supplied to the device. The moving images that are continuously displayed are referred to. That is, when the user of the image display device with the video printer is in a state of watching a moving image continuously displayed based on the video signal supplied to the device and the moving image becomes a desired scene, When the user operates the print image selection unit (unit division period selection unit), one of the video signals at that time is displayed.
The frame period is taken out and stored in the image capturing memory means.

Display of a moving image based on a video signal supplied to the apparatus is performed by using, for example, a cathode ray tube for display (display CRT), a liquid crystal panel for image display, and the like. A video printer that prints an image represented by one frame period of the read video signal on a paper surface is, for example, of a thermal transfer type using an ink sheet that is overlaid on the paper surface.

Further, in the image display device with the video printer, the image trimming display is performed so that the image based on the video signal supplied to the device is displayed within a preset frame. It has been proposed to perform trimming image printing in which an image trimmed display is printed as a still image on paper.

In an image display device with a video printer,
When performing trimming image display and further trimming image printing, a trimming image video signal is formed. In such a trimmed image video signal, for example, image trimming memory means in which trimming graphic data representing a trimming graphic showing a frame for trimming an image based on the video signal is written is separated from the image capture memory means. And is obtained by performing processing based on the trimming graphic data read from the image trimming memory means to the video signal provided to the device. At that time, for example, a trimming pattern which is supplied to the device and a predetermined masking signal is guided to a signal selecting unit, and written in the image trimming memory means and then read from the image trimming memory means. The operation of the signal selection unit is controlled by the data, and the signal selection unit outputs the data according to the trimming figure data.
The video signal for the trimming image is formed by selectively extracting the video signal and the masking signal.

In the image based on the video signal for the trimming image, which is composed of the video signal and the masking signal obtained in this way, the image such as the moving image represented by the video signal is partially covered by the non-image portion represented by the masking signal. The shape of the non-image portion represented by the masking signal corresponds to the trimming graphic represented by the trimming graphic data.

[0008]

As described above, when the image display device with the video printer is provided with the function of performing the image trimming display and the trimming image print in addition to the image trimming display, the device is provided. The image capturing memory means and the image trimming memory means are separately provided. Therefore, the portion including the image capturing memory means and the image trimming memory means not only complicates the configuration but also increases the cost. Further, a portion including an image capturing memory means and an image trimming memory means,
Furthermore, a relatively large-scale control system is required for operation control of the part related to the part.

In view of the above point, the present invention takes out a desired one of the unit division periods, which are, for example, the frame period, which constitutes the video signal, and takes out a still image of the image represented by the desired one. As a display, a function of performing printing on the paper of an image represented by the image, an image trimming display for displaying an image based on a video signal in a preset frame, and an image for which the image trimming display is performed. It has a function of printing a trimming image to print a still image as a still image on the paper, and simplifies the configuration of the part including the memory part where the video signal and the like are written and read, resulting in an increase in cost. And a control system required for operation control of a portion including the memory portion and a portion related to the portion is relatively small. To provide a video signal processing apparatus that will suffice.

[0010]

A video signal processing apparatus according to the present invention includes a memory section in which a video signal or other information signal can be written and read, and a plurality of external video signals in the memory section. A first operation state in which writing and reading are sequentially performed for a unit division period, and
Memory operation control means for selectively taking a second operation state in which writing and reading of a trimming figure information signal with respect to a video signal from the outside are performed; and when the memory section is in the first operation state, the memory section is stored in the memory section. A trimming figure information signal read out from the memory section when the memory section is in the second operation state, and unit section period selection and extraction means for extracting a selected one of the plurality of unit section periods in the video signal to be written. Of the trimming figure information signal read from the memory unit and the video signal from the outside in accordance with the information signal discriminating unit for discriminating the contents of the information signal and the discrimination output signal obtained from the information signal discriminating unit. The image obtained by trimming the image represented by the video signal from Configured and a signal selection unit for obtaining a video signal for be trimmed image.

In the video signal processing device according to the present invention having such a configuration, the first operation in which the memory section sequentially performs writing and reading for a plurality of unit division periods in the video signal from the outside. In the state, a selected one of a plurality of unit segment periods in the video signal written in the memory unit that is extracted from the memory unit by the unit segment period selection extraction unit is a still image of the image represented by it. Is displayed, and further, it is used for printing on the paper of the image it represents,
When the memory section is in the second operation state in which the trimming figure information signal is written and read with respect to the video signal from the outside, the trimming image image is read according to the trimming figure information signal read from the memory section by the signal selecting section. The signal is obtained. Therefore, the memory section that selectively takes the first operating state and the second operating state serves as both the image capturing memory unit and the image trimming memory unit.

Therefore, a portion substantially including the image capturing memory means and the image trimming memory means,
That is, it is possible to simplify the configuration of the portion including the memory unit that selectively takes the first operating state and the second operating state, and avoid increasing the cost. In addition, the control system such as the memory operation control means and the unit section period selection and extraction means required for the operation control of the portion including the memory portion and the portion related to the portion is relatively small. Become.

Specifically, the memory operation control means is, for example, a switch section for selectively supplying an external video signal to the memory section, a memory control section for controlling write operation and read operation of the memory section, and , A switch unit and a control unit unit for controlling the operation of the memory control unit, and the unit segment period selection and extraction means and the like are specifically, for example, a memory control unit, a control unit unit, and a control unit. And a signal selection unit for deriving a selected one of a plurality of unit division periods in the video signal obtained from the memory unit. Under these circumstances, the memory operation control means and the unit division period selection / takeout means each have a main part constituted by a common control unit section.

Further, in the example of the video signal processing device according to the present invention, the signal selection unit selectively takes a state in which the trimming image video signal is obtained and a state in which the video signal from the outside is taken out, and the signal from the outside is selected. An image display unit that selectively displays an image represented by a video signal and an image represented by a trimming image video signal is provided. Further, in the example of the video signal processing device according to the present invention, the image on the paper representing the selected unit division period extracted by the unit division period selection extraction means is printed on the paper, and the image is obtained from the signal selection unit. And a printing unit that selectively prints an image represented by the trimmed image video signal on a paper surface.

[0015]

1 shows an example of a video signal processing device according to the present invention. In this example, a video signal SV from the outside is supplied to a video signal input terminal 11. Video signal S from the outside supplied to the video signal input terminal 11
V is guided to the luminance signal / carrier color signal (Y / C) separation unit 12.

In the Y / C separation section 12, the video signal S
The luminance signal Y and the carrier color signal C are separated and derived from V, the luminance signal Y is supplied to the signal selection unit 13, and the carrier color signal C is supplied to the color difference decoder unit 14.
The color difference decoder unit 14 performs biaxial demodulation processing and other processing on the carrier color signal C, and the red color difference signal RY and the blue color difference signal BY based on the carrier color signal C.
Is obtained. Then, the red color difference signal R-Y and the blue color difference signal B-Y from the color difference decoder unit 14 are output to the signal selection unit 1.
3 is supplied.

The luminance signal Y from the Y / C separation section 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder section 14 are supplied to the switch section 20, and the switch section 20 is turned on. , The analog / digital (A / D) converters 21 and 2 are respectively switched through the switch unit 20.
2 and 23. In the A / D converter 21, the luminance signal Y is digitized to form a digital luminance signal DY. In the A / D conversion section 22, the red color difference signal R-Y is digitized to obtain a digital red color difference signal D (RY).
Further, in the A / D converter 23, the blue color difference signal BY is digitized to form a digital blue color difference signal D (BY). The digital luminance signal DY and the digital red color difference signal D obtained from the A / D converters 21, 22, and 23, respectively.
(RY) and digital blue color difference signal D (BY)
Are supplied to the memory unit 24.

The memory section 24 is also supplied with luminance data DYT, red color difference data D (RY) T and blue color difference data D (BY) T which form trimming figure data from the trimming figure data generating section 25. To be done. The luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T are images that are displayed based on the video signal SV within a preset frame. When performing trimming display, a trimming figure information signal representing a trimming figure that determines the shape of the frame is formed. For example, the black level data indicates that an image based on the video signal SV should be displayed, and The white level data represents that the SV-based image should be masked.

Further, the memory section 24 is supplied with a write control signal QW and a read control signal QR from the memory control section 26. Then, in the memory section 24, in accordance with the write control signal QW, the digital luminance signal DY, the digital red color difference signal D (RY) and the digital blue color difference signal D (obtained from the A / D conversion sections 21, 22 and 23, respectively. B−Y) corresponds to each frame period (video signal SV
Corresponding to each frame period) and the luminance data DYT and the red color difference data D for forming the trimming figure data from the trimming figure data generating section 25 are sequentially written for each odd field period and even field period. (RY) T and blue color difference data D (B-
Y) T is selectively written for an odd field period and an even field period (corresponding to an odd field period and an even field period forming each frame period of the video signal SV, respectively). Be taken.
Further, in the memory unit 24, in accordance with the read control signal QR, the digital luminance signal DY, the digital red color difference signal D (RY), and the digital blue color difference signal D (BY) for the odd field period and the even number are written. A state in which the field period is sequentially read as a digital luminance signal DY ', a digital red color difference signal D (RY)' and a digital blue color difference signal D (BY) ',
The luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T that form the written trimming figure data are the digital luminance signal DY for the odd field period and the even field period. ', Digital red color difference signal D (RY)' and digital blue color difference signal D (BY) 'are read,
Taken selectively.

The digital luminance signal DY 'and the digital red color difference signal D (R-
Y) 'and the digital blue color difference signal D (BY)'
It is supplied to the digital-analog (D / A) converters 31, 32 and 33, respectively. In the D / A converter 31,
The digital luminance signal DY ′ is analogized to form the luminance signal Y ′, and the D / A converter 3
2, the digital red color difference signal D (RY) '
Of the red color difference signal (R-
Y) 'is formed, and further, in the D / A converter 33, the digital blue color difference signal D (BY)' is analogized to form a blue color difference signal (BY) '. It

The luminance signal Y ', the red color difference signal (RY)' and the blue color difference signal (BY) 'obtained from the D / A converters 31, 32 and 33, respectively, are supplied to the signal selector 34. It The signal selection unit 34 includes a luminance signal Y ′ and a red color difference signal (R) obtained from the D / A conversion units 31, 32 and 33, respectively.
-Y) 'and the blue color difference signal (BY)' are supplied to the signal selection unit 13, the signal selection unit 35 is supplied,
In addition, the state in which the signal is not supplied to either the signal selection unit 13 or the signal selection unit 35 is selectively set.

The digital luminance signal DY 'and the digital red color difference signal D (R-
Y) 'and the digital blue color difference signal D (BY)'
It is supplied to the data discriminating unit 36. The data discriminating unit 36
The digital luminance signal DY ′, the digital red color difference signal D (RY) ′, and the digital blue color difference signal D (BY) ′ from the memory section 24 are luminance data DYT forming the trimming figure data from the memory section 24, When the red color difference data D (RY) T and the blue color difference data D (BY) T are obtained by reading the odd field period and the even field period, the digital luminance signal DY 'and the digital red color difference are obtained. The contents of the signal D (RY) 'and the digital blue color difference signal D (BY)', that is, the luminance data DYT and the red color difference data D (RY) T.
And an information signal discriminating section for discriminating the content of the blue color difference data D (BY) T, and supplies a discrimination output signal CX corresponding to the discrimination result to the signal selecting section 13 as an operation control signal.

The luminance signal Y from the Y / C separation section 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder section 14 are supplied, and the luminance signal Y'from the signal selection section 34. , The red color difference signal (RY) 'and the blue color difference signal (BY)' are supplied to the signal selection unit 13, and the luminance selection signal Y, the red color difference signal RY, and the blue color difference signal BY are supplied.
To the matrix section 37 and the signal selection section 3
The luminance signal Y ′, the red color difference signal (RY) ′, and the blue color difference signal (BY) ′ from 4 are selectively supplied to the matrix section 37.

In the matrix section 37, the luminance signal Y and the red color difference signal RY supplied from the signal selecting section 13 are supplied.
And a blue color difference signal BY, or a luminance signal Y ', a red color difference signal (RY)' and a blue color difference signal (BY) '.
A red primary color signal R, a green primary color signal G and a blue primary color signal B are formed on the basis of the above, and these red primary color signal R, green primary color signal G and blue primary color signal B are the color cathode ray tube ( Color CRT) 38.
As a result, Y is displayed on the display surface of the color CRT
Luminance signal Y from the / C separation unit 12 and the color difference decoder unit 14
Color image based on the red color difference signal R-Y and the blue color difference signal B-Y from the image signal SV, or the color image represented by the video signal SV, or the luminance signal Y ′ and the red color difference signal (R− Y) 'and the blue color difference signal (B
The color image represented by -Y) 'is displayed.

Further, the luminance signal Y, the red color difference signal RY and the blue color difference signal BY, which are selectively obtained from the signal selection unit 13, or the luminance signal Y ', the red color difference signal (R-
Y) 'and the blue color difference signal (BY)' are supplied to the signal selection unit 3
5 as well. The signal selection unit 35 is the signal selection unit 34.
The luminance signal Y ′, the red color difference signal (RY) ′, and the blue color difference signal (BY) ′ from the image signal forming unit 4 for printing.
0, and the luminance signal Y, the red color difference signal RY and the blue color difference signal BY from the signal selection unit 13, or the luminance signal Y ′, the red color difference signal (RY) ′ and the blue color. The state in which the color difference signal (BY) 'is supplied to the print video signal forming unit 40 is selectively set.

In the print video signal forming section 40, one frame period of the luminance signal Y ', the red color difference signal (RY)' and the blue color difference signal (BY) 'from the signal selecting section 34 is obtained. On the basis of the above, the state in which the yellow color signal Ye, the cyan color signal Cy and the magenta color signal Ma forming the print video signal for printing the image represented by the image are formed, and the signal selection unit 13 Luminance signal Y, red color difference signal RY and blue color difference signal B from
-Y, or luminance signal Y ', red color difference signal (R-
Y) 'and blue color difference signal (BY)' for one frame period, a yellow color signal Ye and a cyan color forming a print video signal for printing an image represented by the image on a paper surface. The state in which the signal Cy and the magenta color signal Ma are formed is selectively taken. Then, the yellow color signal Ye, the cyan color signal Cy, and the magenta color signal Ma, which form the print video signal, obtained from the print video signal forming unit 40 are printed by the print unit 41.
Is supplied to.

The printing section 41 has a built-in memory section for storing the yellow color signal Ye, the cyan color signal Cy and the magenta color signal Ma supplied from the printing video signal forming section 40. For example, a yellow color ink is used. A thermal transfer system is used in which a sheet, a cyan color ink sheet, a magenta color ink sheet, and a thermal head are used. Then, the print unit 41
In the built-in memory section, the print video signal forming section 4
With the yellow color signal Ye from 0, the cyan color signal Cy and the magenta color signal Ma stored, for example, first,
The yellow color ink sheet is superposed on the surface of the print paper, and the yellow color signal Ye read from the built-in memory unit is supplied to the thermal head which is in contact with the yellow color ink sheet. The operation of thermally transferring the yellow ink applied to the yellow color ink sheet on the sheet of paper according to the yellow color signal Ye is performed.

Subsequently, a cyan color ink sheet is superposed on the surface of the print paper on which the yellow ink has been thermally transferred, and is read from the built-in memory section to the thermal head which is supposed to contact the cyan color ink sheet. The supplied cyan color signal Cy is supplied, and the cyan ink applied to the cyan color ink sheet on the paper surface of the print paper is thermally transferred according to the cyan color signal Cy. Furthermore, the yellow and cyan inks are transferred. A magenta color ink sheet is superposed on the surface of the heat-transferred print paper, and the magenta color signal Ma read from the built-in memory unit is supplied to the thermal head that is in contact with the magenta color ink sheet. , The magenta ink applied to the magenta color ink sheet is printed on the surface of the print paper. Operation to be thermal transfer is performed according to printer color signals Ma. As a result,
The luminance signal Y ′ and the red color difference signal (R
-Y) 'and blue color difference signal (BY)' for one frame period, or the signal selection unit 13
Luminance signal Y, red color difference signal RY and blue color difference signal BY, or luminance signal Y ′, red color difference signal (R
-Y) 'and the blue color difference signal (BY)' are printed for a color image represented by one frame period.

In the example shown in FIG. 1, each of the above-mentioned signal selecting sections 13, 34 and 35, the switch section 20, the trimming figure data generating section 25, the memory control section 26 and the data discriminating section. A control unit section 45 for controlling the operation of the control unit 36 is provided.

When the normal operation setting section 46 connected to the control unit section 45 is operated under such a condition, the normal operation command signal ZN is supplied from the normal operation setting section 46 to the control unit section 45. . The control unit section 45, to which the normal operation command signal ZN is supplied, sends out the control signal CN according to the normal operation command signal ZN, supplies it to the signal selection section 13 and the switch 20, and outputs the control signal CMN. It is sent out and supplied to the memory control unit 26. As a result, the signal selection unit 13
According to the control signal CN, the luminance signal Y from the Y / C separation unit 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder unit 14 are supplied to the matrix unit 37. Further, the switch unit 20 is turned on in response to the control signal CN. Further, the memory control unit 26, according to the control signal CMN,
The write control signal QW and the read control signal QR are set to A / D
The digital luminance signal DY, the digital red color difference signal D (RY), and the digital blue color difference signal D (BY) obtained from the converters 21, 22 and 23, respectively, are for odd field period forming each frame period. And even field periods are sequentially written into the memory section 24, and the odd number field periods of the digital luminance signal DY, the digital red color difference signal D (RY) and the digital blue color difference signal D (BY) are sequentially written from the memory section 24. And the even field period are sequentially read out as the digital luminance signal DY ', the digital red color difference signal D (RY)' and the digital blue color difference signal D (BY) ', and the memory section Supply to 24.

As a result, on the display surface of the color CRT 38, a color image based on the luminance signal Y from the Y / C separation unit 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder unit 14, Therefore, the color image represented by the video signal SV is displayed, and at the same time, in the memory section 24, the digital luminance signal DY and the digital red color difference signal D (RY) obtained from the A / D conversion sections 21, 22 and 23, respectively. And digital blue color difference signal D
(BY), writing for each odd-field period and even-field period forming each frame period, and the written digital luminance signal DY, digital red color difference signal D (RY), and digital The digital luminance signal DY ', the digital red color difference signal D (RY)', and the digital blue signal for each of the odd field period and the even field period forming each frame period of the blue color difference signal D (BY). Color difference signal D
The reading as (BY) 'is performed.
Digital luminance signal D read from the memory unit 24
Y ', the digital red color difference signal D (RY)' and the digital blue color difference signal D (BY) 'are D / A conversion unit 3
1, 32 and 33 respectively.

In such a state, the print image selection section 47 connected to the control unit section 45 is operated, and the print image selection command signal ZP is sent from the print image selection section 47 to the control unit section 45. When supplied, the control unit section 45 supplies the control signal CP to each of the signal selection section 34 and the signal selection section 35 in accordance with the print image selection command signal ZP. As a result, the signal selection unit 34 causes the D / A conversion unit 31,
One frame period obtained at that time for the luminance signal Y ′, the red color difference signal (RY) ′, and the blue color difference signal (BY) ′ obtained from 32 and 33, respectively,
3 and the state of supplying to the signal selection unit 35,
The signal selection unit 35 outputs the luminance signal Y ′, the red color difference signal (RY) ′ and the blue color difference signal (BY) ′ from the signal selection unit 34 according to the control signal CP. 40 is supplied.

As a result, in the printing section 41, the luminance signal Y'from the signal selecting section 34 and the red color difference signal (R-
A color image represented by one frame period of Y) 'and the blue color difference signal (BY)' is printed.

Further, at this time, the still picture display setting section 48 connected to the control unit section 45 is operated, and the still picture display setting section 48 supplies the still picture display command signal ZD to the control unit section 45. And the control unit section 45
Is a control signal CPD according to the still image display command signal ZD.
Is supplied to the signal selection unit 13. As a result, the signal selection unit 13 causes one frame period of the luminance signal Y ′, the red color difference signal (RY) ′, and the blue color difference signal (BY) ′ from the signal selection unit 34 in accordance with the control signal CPD. In place of the luminance signal Y from the Y / C separation unit 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder unit 14,
The matrix unit 37 is supplied. as a result,
The signal selection unit 34 is provided on the display surface of the color CRT 38.
A still image color image represented by one frame period of the luminance signal Y ′, the red color difference signal (RY) ′, and the blue color difference signal (BY) ′ is displayed.

On the other hand, the trimming operation setting / trimming figure selection section 49 connected to the control unit section 45.
When the above operation is performed, the trimming operation setting / trimming figure selecting section 49 outputs the trimming operation command signal ZTM and the trimming figure designating signal ZTS to the control unit section 45.
Is supplied to. The control unit section 45, to which the trimming operation command signal ZTM and the trimming figure designating signal ZTS are supplied, sends the control signal CT according to the trimming operation command signal ZTM without sending the control signal CN and the control signal CMN. The control signal CMT is sent to the signal selection section 34 and the data discrimination section 36, the control signal CMT is sent to the memory control section 26, and the control is performed according to the designation content of the trimming figure designation signal ZTS. The signal CTS is sent out and supplied to the trimming figure data generator 25. As a result, the switch section 20 is turned off, and the trimming figure data generating section 25 outputs trimming figure data representing the trimming figure specified by the trimming figure designating signal ZTS according to the control signal CTS. The luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T to be formed are supplied to the memory unit 24.

At this time, the memory control unit 26 sends the write control signal QW and the read control signal QR to the luminance data DYT, which forms the trimming graphic data from the trimming graphic data generating unit 25, in accordance with the control signal CMT.
Red color difference data D (RY) T and blue color difference data D
(BY) T is written in the memory unit 24 for odd field periods and even field periods, and
The luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T forming the trimming figure data from the memory section 24 are digital luminance signals for the odd field period and the even field period. DY ',
The digital red color difference signal D (RY) 'and the digital blue color difference signal D (BY)' are supplied to the memory section 24 as a signal that causes a state of being read out.

As a result, in the memory section 24, the luminance data DYT and the red color difference data D (R- which form the trimming figure data from the trimming figure data generating section 25 are formed.
Y) T and blue color difference data D (BY) T are written for odd field periods and even field periods, and
Luminance data DYT, red color difference data D (RY) T, and blue color difference data D (B- that form the trimming figure data from the written trimming figure data generation unit 25.
Y) For the odd field period and the even field period of T, reading is performed as the digital luminance signal DY ', the digital red color difference signal D (RY)', and the digital blue color difference signal D (BY) '. It is said that

At this time, the luminance data DYT and the red color difference data D (R-, which are supplied from the trimming figure data generating section 25 to the memory section 24 and form the trimming figure data to be written and read in the memory section 24.
Y) T and the blue color difference data D (BY) T for the odd-numbered field period and the even-numbered field period, for example, as shown in FIG. The diamond-shaped internal BK is a portion where the image based on the video signal SV is to be displayed, and the diamond-shaped external WT is a portion where the image based on the video signal SV is to be masked. The luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T represent the diamond-shaped internal BK with black level data and the diamond-shaped external WT with white level data. To be taken.

The digital luminance signal DY 'and the digital red color difference signal D (R-
Y) 'and the digital blue color difference signal D (BY)'
The data is supplied to the D / A conversion units 31, 32, and 33, respectively, and is also supplied to the data determination unit 36. D / A converter 3
1, 32 and 33 respectively, luminance data DYT and red color difference data D (R-
Y) T and the blue color difference data D (BY) T, which are obtained by analogizing the odd field period and the even field period of the luminance field Y ', the red color difference signal (RY)', and The blue color difference signal (BY) 'is transmitted.

Further, at this time, the signal selecting section 34 responds to the D / A signal in response to the control signal CT from the control unit section 45.
Luminance data DYT, red color difference data D (RY) T, and blue color difference data D (BY) T, which form trimming figure data, respectively obtained from the conversion units 31, 32, and 33.
Luminance signal Y ′, red color difference signal (RY) ′, and blue color difference signal (BY) ′, which are obtained by analogizing the odd field period and the even field period of
Is supplied to the signal selection unit 13.

Further, the data discriminating section 36 includes a memory section 24.
The contents of the digital luminance signal DY ', the digital red color difference signal D (RY)', and the digital blue color difference signal D (BY) 'read from the following, therefore, the luminance data DYT, red forming trimming figure data Color difference data D
The contents of (RY) T and blue color difference data D (BY) T are determined. Then, the luminance data DYT and the red color difference data D (R-
When the contents of Y) T and the blue color difference data D (BY) T are white level data and indicate that the image based on the video signal SV should be masked, for example,
It takes a low level, is black level data, and is a video signal S
When indicating that an image based on V should be displayed, for example, a discrimination output signal CX having a high level is formed, and the discrimination output signal CX is supplied to the signal selection unit 13 as an operation control signal.

Discrimination output signal CX from the data discrimination unit 36
When the discrimination output signal CX is at a low level, the signal selection unit 13 to which is supplied the luminance data DYT forming the trimming graphic data, the red color difference data D (RY) T, and the blue color from the signal selection unit 34. A luminance signal Y ′, a red color difference signal (RY) ′, and a blue color difference signal (B), which are obtained by analogizing the odd field period and the even field period of the color difference data D (BY) T. -Y) 'is taken out and supplied to the matrix part 37,
When the discrimination output signal CX takes a high level, the luminance signal Y from the Y / C separation unit 12 and the red color difference signal RY and the blue color difference signal BY from the color difference decoder unit 14 are taken out and the matrix unit 37 is used. To supply to. Thereby, from the signal selection unit 13, a luminance signal Y'having a white video signal obtained by analogizing the white level data and a red color difference depending on the situation where the image based on the video signal SV should be masked. Signal (RY) 'and blue color difference signal (BY)', and a luminance signal Y from the Y / C separation unit 12 and a color difference decoder unit according to a situation in which an image based on the video signal SV should be displayed. Red color difference signal R from 14
-Y and the blue color difference signal BY are selectively taken out to obtain a trimming image video signal, and the trimming image video signal is supplied to the matrix section 37.

In the matrix section 37, a red primary color signal R, a green primary color signal G and a blue primary color signal B are formed based on the trimming image video signal, and these are supplied to the color CRT 38. As a result, color CR
The trimming figure represented by the luminance data DYT, the red color difference data D (RY) T, and the blue color difference data D (BY) T forming the trimming figure data from the trimming figure data generation unit 25 is displayed on the display surface portion at T38. Accordingly, the white portion is masked to display an image based on the trimmed video signal SV. The image displayed after such trimming is
For example, as shown in FIG. 3, it is assumed that a rhombus is arranged on a rectangular image screen, an image based on the video signal SV is displayed on an internal DBK of the rhombus, and an external DW of the rhombus is displayed.
T is a white portion that masks the image based on the video signal SV.

In such a trimming operation state, when the print image selection section 47 is operated and the print image selection command signal ZP is supplied from the print image selection section 47 to the control unit section 45, the control unit section. Four
Reference numeral 5 designates the control signal CTP in response to the print image selection command signal ZP under the trimming operation state, and the signal selector 3
5 As a result, the signal selection unit 35 causes the video signal S from the signal selection unit 13 in accordance with the control signal CTP.
A luminance signal Y ′ and a red color difference signal (R−, which contain a white video signal obtained by analogizing white level data, depending on the situation where an image based on V should be masked.
Y) 'and blue color difference signal (BY)', and video signal SV
The luminance signal Y from the Y / C separation unit 12 and the red color difference signal R-Y and the blue color difference signal B-Y from the color difference decoder unit 14 are selectively selected according to the situation in which an image based on The trimmed image video signal that is taken out and formed is supplied to the print video signal forming unit 40.

As a result, the print video signal forming unit 4
0, the yellow color signal Ye and the cyan color signal Cy based on the trimming image video signal from the signal selection unit 13
Further, the magenta color signal Ma is formed and supplied to the print section 41, and the image based on the trimmed video signal SV is printed on the paper surface as a still image color image in the print section 41.

Based on the above, the portion including the switch unit 20, the memory control unit 26, and the control unit unit 45 is
A first operation state in which writing and reading are sequentially performed in the memory unit 24 for a frame period that is a plurality of unit division periods in the video signal SV from the outside that is substantially supplied to the video signal input terminal 11. And, a memory operation control means for selectively taking a second operation state in which writing and reading of trimming figure data from the trimming figure data generation unit 25, which is a trimming figure information signal with respect to the video signal SV from the outside, is performed. In addition, when the memory unit 24 is in the above-mentioned first operation state, the portion including the memory control unit 26, the signal selection unit 34, the control unit unit 45, and the print image selection unit 47
A unit segment period selection extraction unit that extracts a selected one of a plurality of unit segment periods of the video signal SV from the outside that is substantially written in the memory unit 24 is configured.

Further, the portion including the control unit portion 45 and the trimming operation setting / trimming figure selection portion 49 is
A trimming figure represented by luminance data DYT, red color difference data D (RY) T, and blue color difference data D (BY) T forming trimming figure data which is a trimming figure information signal obtained from the trimming figure data generation unit 25. The trimming figure selection setting means for selecting and setting is selected.

[0048]

As is apparent from the above description, in the video signal processing device according to the present invention, the memory section sequentially performs writing and reading for a plurality of unit division periods in the video signal from the outside. In the first operation state, a selected one of a plurality of unit division periods in the video signal written in the memory unit, which is extracted from the memory unit by the unit division period selection extraction unit, represents an image represented by the selected one. Is displayed as a still image, and further, the image represented by the image is printed on a paper surface, and the memory section writes and reads a trimming figure information signal for an external video signal. In the above operating state, the trimming image display is performed in accordance with the trimming figure information signal read from the memory section by the signal selecting section. Signal is obtained.

Therefore, the memory section that selectively takes the first operating state and the second operating state serves as both the image capturing memory means and the image trimming memory means. It is possible to simplify the configuration of the portion substantially including the image capturing memory means and the image trimming memory means, that is, the portion including the memory portion that selectively takes the first operating state and the second operating state. It will be avoided that the cost is increased. In addition, there is an advantage that the control system required for operation control of the portion including the memory portion and the portion related to the portion can be relatively small.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a video signal processing device according to the present invention.

FIG. 2 is a conceptual diagram provided for explaining a trimming graphic information signal used in an example of a video signal processing device according to the present invention.

FIG. 3 is a conceptual diagram for explaining image trimming display in an example of a video signal processing device according to the present invention.

[Explanation of symbols]

 11 video signal input terminal 12 Y / C separation section 13, 34, 35 signal selection section 14 color difference decoder section 20 switch section 21, 22, 23 A / D conversion section 24 memory section 25 trimming figure data generation section 26 memory control section 31 , 32, 33 D / A conversion section 36 Data discrimination section 37 Matrix section 38 Color CRT 40 Video signal forming section for printing 41 Printing section 45 Control unit section 46 Normal operation setting section 47 Print image selection section 48 Still image display setting section 49 Trimming operation setting / Trimming figure selection section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miwa Takagi 6-7-35 Kitashinagawa, Shinagawa-ku, Tokyo Sony Corporation

Claims (8)

[Claims] 1. A memory section in which a video signal or other information signal can be written and read, and writing and reading for a plurality of unit division periods in a video signal from the outside are sequentially performed in the memory section. Memory operation control means for selectively taking a first operation state and a second operation state in which writing and reading of a trimming figure information signal with respect to an external video signal are performed; A unit segment period selection extracting means for extracting a selected one of the plurality of unit segment periods written in the memory section when in the operating state, and the memory section in the second operating state, An information signal discriminating section for discriminating the contents of the trimming graphic information signal read from the memory section, and hand,
The trimming graphic information signal read from the memory unit and the video signal from the outside are selectively taken out, and the image represented by the video signal from the outside is trimmed by the graphic represented by the trimming graphic information signal. And a signal selection unit that obtains a trimmed image video signal representing the obtained image. 2. A signal selection section selectively takes a state in which a trimming image video signal is obtained and a state in which an external video signal is taken out to display an image represented by the external video signal and the trimming image video signal. The image signal processing apparatus according to claim 1, further comprising an image display unit that selectively displays the image represented by the image display unit. 3. A printout on a paper of an image represented by the selected unit division period extracted by the unit division period selection extraction means and a paper surface of an image represented by a trimming image video signal obtained from the signal selection unit. 3. The video signal processing device according to claim 1, further comprising a printing unit that selectively prints on the image signal. 4. A trimming figure data generating section for supplying a trimming figure information signal to a memory section, and trimming figure selecting and setting means for selectively setting a trimming figure represented by the trimming figure information signal obtained from the trimming figure data generating section. The video signal processing device according to claim 1, further comprising: 5. A trimming figure information signal obtained from a trimming figure data generating section is trimming figure data representing a trimming figure with first data and second data, and an information signal discriminating section has contents of the trimming figure data. Is the first data or the second data, and the signal selecting section reads the trimming figure read from the memory section when the content of the trimming figure data is the first data. 5. The video signal processing apparatus according to claim 4, wherein an information signal is taken out and an external video signal is taken out when the content of the trimming graphic data is the second data. 6. A memory operation control means and a unit division period minute selection and extraction means are each partially configured to include a control unit section for performing operation control on the information signal discrimination section and the signal selection section. Item 1. The video signal processing device according to Item 1. 7. A memory operation control means, a unit division period selection and extraction means, and a trimming graphic selection setting means are each partially configured to control operation of an information signal discriminating portion, a signal selecting portion and a trimming graphic data generating portion. The video signal processing device according to claim 5, further comprising a control unit section for performing the operation. 8. The video signal processing device according to claim 1, wherein a plurality of unit division periods in the video signal from the outside are set to a plurality of frame periods.