JPH10274969A - Video display device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable a user to arbitrarily manage adjustment data in accordance with the type of an input video signal, and to reduce the burden of adjusting the video display state. SOLUTION: A nonvolatile memory 53 has a user area independent of an automatic storage area. Since the user can arbitrarily store adjustment data in the user area, conventionally, it can be used as a backup of adjustment data that may be automatically deleted regardless of the user's intention due to memory management. Thus, even when the video signal of the adjustment data that has been deleted regardless of the user's intention in the related art is re-input, it is not necessary to adjust the video display state again. It is possible to reduce the burden.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video display device capable of displaying a video corresponding to a plurality of types of video synchronization signals including frequencies.

[0002]

2. Description of the Related Art In recent years, video display devices such as a television receiver and a computer display device correspond to a plurality of different types of video synchronization signals (hereinafter simply referred to as "synchronization signals") (synchronization frequency and the like). A so-called multi-scan type image display device capable of displaying an image has appeared. In such a multi-scan video display device, when the type of the synchronization signal of the input video signal is different, the brightness, contrast, screen display position, and the like of the video display screen are provided for each video signal having the different synchronization signal. Of the video display state can be adjusted. The adjustment data for video display relating to this adjustment is automatically stored in a storage means such as an EEPROM (Electrically Erasable / Writable ROM) for each type of synchronization signal. The adjustment data stored here is called up when a video signal having the same type of synchronization signal is re-input, whereby the video display state is automatically adjusted.

However, since the memory area of the storage means is limited, the number of adjustment data that can be stored is limited. For this reason, by using several types of video signals, if adjustment data is already stored in all memory areas and a new type of video signal is input, the adjustment data for that video signal will be The area where the old adjustment data is stored is automatically overwritten.
In this case, the adjustment data stored before overwriting is deleted.

[0004]

As described above, in the above-described conventional video display device, when the adjustment data is overwritten in the storage means, the adjustment data stored before the overwriting is changed to the user's will. Regardless, when the video signal corresponding to the erased adjustment data is re-input, it is necessary to adjust the video display state again, which makes the operability poor and takes much time for the adjustment. There was a problem.

Further, since the adjustment data is stored for each type of synchronization signal included in the video signal, the same adjustment data is used for all video signals having the same type of synchronization signal. As a result, there has been a problem that a response corresponding to the type of the video signal has not been sufficiently performed. For example, although the frequency and the polarity are the same as the type of the synchronization signal, as shown in FIG. 14, a video signal interval (H blank interval) including a horizontal synchronization pulse interval and an H blank interval is included. If the video display state is adjusted using the same adjustment data for video signals having different signals during the active section, the respective video images 141a, 141a, and 141b are displayed on the screen 140 shown in FIGS. 141b may be displayed at a different position. In such a case, it is desirable to store the adjustment data separately for each video signal even if the type of the synchronization signal is the same, but conventionally, when the type of the synchronization signal is the same, one video signal is stored. However, there is a problem that only the adjustment data corresponding to the image data can be stored, and the adjustment needs to be performed again each time a different video signal is input.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to allow a user to arbitrarily manage adjustment data in accordance with the type of an input video signal, and to display the video display state of the user. It is an object of the present invention to provide a video display device capable of reducing the burden of adjustment.

[0007]

According to the present invention, there is provided a video display apparatus comprising: a video synchronizing signal used for video display;
First storage means for storing adjustment data for video display which is always referred to when displaying the video, and adjustment data for video display which is appropriately referred to when displaying the video, A second storage means for storing the information as appropriate in accordance with the type.

[0008] In the video display device according to the present invention, the second storage means stores the video display adjustment data, which is appropriately referred to at the time of video display, in accordance with the type of the specified video synchronization signal. . The adjustment data stored in the second storage means is appropriately called up only when designated and used for adjusting the video display.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 to 3 show the appearance of an image display apparatus according to an embodiment of the present invention.
2 shows a state in which the apparatus is viewed from the obliquely upper front of the apparatus, and FIG. This video display device is used, for example, as a television receiver or a computer display device for home use or business use, but may be used as a display device for other uses. FIG. 3 shows a state in which the image display device is viewed from the front.

As shown in FIG. 1, a display unit 1a for displaying images and other information is provided on the front side of an image display device main body (hereinafter, simply referred to as "main unit") 1 of the image display device. And a front panel unit 2 provided with a panel operation key 3 composed of a plurality of operation keys. As shown in FIG. 2, the video display device further includes an expansion slot 4 on the back side of the main body 1.
A scan converter 5 described later can be detachably mounted.

As shown in FIG. 3, a panel operation key 3 includes a power switch (power SW) 13 used for turning on the power and an LE for displaying a power-on state.
D14, a light receiving unit 15 for receiving a command transmitted from a remote controller (not shown), volume keys 16 and 17 used for adjusting the volume, and a main menu screen 22 as shown in FIG. It has a menu key 18 to be used, selection keys 19 and 20 and an enter key 21 to be used in a state where the main menu screen 22 and the like are displayed.

The menu key 18 is used to adjust various elements that determine the display state of the image displayed on the display section 1a. When this key is pressed, a main menu screen 22 as shown in FIG. Is displayed. The various factors that determine the above video conditions include:
For example, contrast (CONTRAST), brightness (BRIGHTNESS)
, Hue (PHASE), saturation (CHROMA), and the like. When "PICCONTROL" on the main menu screen 22 is selected, an adjustment menu screen 24 (for example, shown in FIG. 7) having items corresponding to these is displayed. It is supposed to be.

The selection keys 19 and 20 are essentially keys whose operations are valid only in the setting mode, and whose operations are invalid in other modes, that is, in a normal image display state. Among them, the selection key 19 is used to move the position of the cursor 23 for selecting a function upward between items on the main menu screen 22 or to set the cursor on a menu screen corresponding to various selected functions (for example, brightness). It is used to increment a value (adjustment value). On the other hand, the selection key 20 is used to move the position of the cursor 23 for selecting a function downward between items on the main menu screen 22, or to set a function selected on the main menu screen 22 (for example, as shown in FIG. 7). ) Is used to decrement the set value.

The enter key 21 is used to select an item on the main menu screen 22 where the cursor 23 is located.

FIG. 4 is a control block diagram showing a configuration of a control system of the entire video display device in a state where the scan converter 5 is mounted on the expansion slot 4 of the main body 1 in FIG. As shown in this figure, the present apparatus is configured such that a scan converter 5 is detachably connected to a main body 1 by a connector 6 in an expansion slot 4.

First, the configuration of the control system of the main body 1 will be described.
The main body 1 includes a main control unit 31, a user interface (I / F) control unit 32, an on-screen display (OSD) control unit 33, a nonvolatile memory 34, a deflection control circuit 35, and a bus switch 47. And The user interface control unit 32, the OSD control unit 33, and the nonvolatile memory 34
The main control unit 31 and the deflection control circuit 35 are connected to the common terminal C of the bus switch 47 by the
0b is connected to one switching terminal L of the bus switch 47. A serial bus 30c is connected to the other switching end H of the bus switch 47. Bus switch 47
When the signal level of the control line 48 connected to the connector 6 becomes H or L, the serial bus 30
a is switched and connected to one of the serial bus 30c and the serial bus 30b.

The main unit 1 also has a serial bus I ² C
(Inter Integrated Circuit
t) a video control circuit 37 connected to the main control unit 31 by a bus, an output terminal of the video control circuit 37 and an OSD
An RGB decoder 38 connected to the control unit 33,
A CRT (cathode ray tube) 39 connected to the output end of the GB decoder 38;

When the scan converter 5 is not connected to the main body 1, the control line 48 is at the L level, and the bus switch 47 is switched to the switching end L side. Therefore, the serial bus 30a is connected to the serial bus 30b. In such a situation,
Each device of the main body 1 functions as follows.

First, in this state, the main control section 31 plays a role of controlling the operation of the entire image display device. That is, the main control unit 31 controls the entire operation in synchronization with the vertical blanking pulse (V-BLK-Pulse) 42 input from the deflection control circuit 35 at each retrace period timing of the display screen. . Specifically, it controls the state of RGB signals (R, G, B color signals) 43 input to the video control circuit 37 from the RGB input terminal of the connection connector 6, In response to command data or the like input from various panel operation keys 3 shown in FIG. 3 or sent from a remote controller (not shown) to the light receiving unit, an LE for power supply display is provided.
D14 and the like, and each device connected to the serial buses 30a and 30b are controlled. Further, by inputting control data to the main control unit 31 from the outside via the serial data line 44 such as RS232C via the connector 6, the entire main body 1 can be controlled.

The user interface control unit 32 samples input data from the panel operation keys 3 such as the menu key 18 and the light receiving unit 15 of the remote controller, and converts the sampled data in response to an inquiry from the main control unit 31. Control is performed to transmit the power to the main control unit 31 via the serial buses 30a and 30b, and to turn on the power display LED 14 in response to a request from the main control unit 31.

The OSD control unit 33 outputs video data representing a character to be displayed on the CRT 39 so as to be superimposed on a video as an RGB signal 41 to the RGB decoder 38 based on an instruction from the main control unit 31. For example, the contrast (CONTRAS
T), brightness (BRIGHTNESS), horizontal size (H-SIZE), vertical size (V-SIZE), horizontal shift (H-SHIFT) and vertical shift (V-SHIFT). Data (RGB) necessary to display various menu screens (for example, shown in FIG. 7) as a user interface for
Signal) is created by the OSD control unit 33.

The deflection control circuit 35 controls the deflection of the horizontal and vertical beams of the CRT 39. Some devices in this circuit are controlled by the main control unit 31 through the serial bus 30b. I have. This circuit constitutes a so-called single scan system that performs deflection control at a scanning frequency of, for example, a horizontal synchronization frequency of 31.5 kHz and a vertical synchronization frequency of 70/60/50 Hz.

The video control circuit 37 performs predetermined signal processing on the RGB input signal 43 input from the RGB input terminal of the connector 6, based on an instruction given from the main control section 31 through the I ² C bus 36. RGB video signal 45
Is input to the RGB decoder 38.

The RGB decoder 38 is connected to the video control circuit 3
7 and the RGB signal 41 from the OSD control unit 33 are mixed and sent to the CRT 39.

Next, the configuration of the control system of the scan converter 5 will be described. The scan converter 5 includes a scan converter (S / C) controller 51 and a frequency converter 52
, A non-volatile memory 53, and an input switch 54. These units are interconnected by a serial bus 50. The serial bus 50 is connected to the serial bus 30c of the main unit 1 via the connector 6 when the scan converter 5 is connected to the main unit 1. Scan converter 5 also
It has a three-dimensional Y / C separation unit 56 connected to the S / C control unit 51 by an I ² C bus 55, and a hue decoder 57 connected to the output end side of the three-dimensional Y / C separation unit 56. .

A serial data line 66 connected to the serial data line 44 of the main unit 1 via the connector 6 when the scan converter 5 is connected to the main unit 1 is connected to the S / C control unit 51. . The S / C control unit 51 also receives the vertical synchronization pulse 6 from the frequency conversion unit 52.
3 is input. Further, a control line 65 connected to the control line 48 of the main unit 1 via the connector 6 when the scan converter 5 is connected to the main unit 1 is connected to the S / C control unit 51.

The frequency conversion section 52 includes an input switch 5
The RGB signal 60 input via the H.4 is converted to a signal having a horizontal synchronization frequency of 31.5 kHz and a vertical synchronization frequency of 60H, for example.
The signal is converted into an RGB signal 64 of z and output. Here, the convertible RGB input signal 60 is, for example, a signal having a horizontal synchronization frequency of 15 kHz to 85 kHz and a vertical synchronization frequency of 45 Hz to 130 Hz. Some devices in the frequency converter 52 are controlled by the S / C controller 51 via the serial bus 50. When the scan converter 5 is connected to the main unit 1, the RGB signals 64 output from the frequency conversion unit 52 are input as RGB signals 43 to the video control circuit 37 of the main unit 1 via the connection connector 6. ing.

The input changeover switch 54 is connected to the S / C controller 5
1 in response to a switching instruction sent via the serial bus 50 from the RGB input signal 62 input from the RGB input terminal.
Alternatively, an RGB signal 61 input from the hue decoder 57
Is selected and input to the frequency conversion unit 52 as an RGB signal 60.

The three-dimensional Y / C separation unit 56 and the hue decoder 57 are connected to the S / C control unit 5 connected by the I ² C bus 55.
1, the composite signal input from the composite signal input terminal (that is, the normal VCR (V
Video signal reproduced from ideo Cassette Recorder)
To a RGB signal. More specifically, the luminance signal Y and the chrominance signal C are separated from the composite signal 58 by the three-dimensional Y / C separation unit 56,
These luminance signal Y and color signal C are converted into hue decoder 57.
, The RGB signal 61 is obtained. The three-dimensional Y / C separation means not only comparison of video signals for each scanning line in a certain frame, but also comparison of video signals between a certain frame and the next frame. This refers to performing Y / C separation by performing digital processing. As described above, in the present apparatus, the composite signal 58 and the RGB input signal 62 are input as video signals.

The non-volatile memory 53 includes, for example, EEPRO
M (electrically erasable and writable ROM). In the nonvolatile memory 53, various data adjusted at the time of shipment from the factory and various user data that can be adjusted by the user are written. This user data is various adjustment data relating to contrast, brightness, and the like, and can be freely set by the user.

FIG. 5 shows a memory map of the nonvolatile memory 53. Note that, in this figure, only the user data storage area 53M in which various adjustment data are stored in the storage area of the nonvolatile memory 53 is shown.

The user data storage area 53M in which the adjustment data is stored in the nonvolatile memory 53 includes, for example, contrast (CONTRAST), brightness (BRIGHTNESS), and horizontal size (HS
Adjustment data such as IZE), vertical size (V-SIZE), horizontal shift (H-SHIFT), and vertical shift (V-SHIFT) can be stored. This user data storage area 53M
Automatic storage area M used for storing normal adjustment data
1 and a user area M2 in which adjustment data can be arbitrarily stored at the discretion of the user. At the time of shipment from the factory, no data is stored in the user data storage area 53M, and all the data are empty. In the automatic storage area M1, a predetermined initial value is set for each adjustment item. This automatic storage area M
1 and the user area M2 correspond to the first storage means and the second storage means in the present invention, respectively.

The automatic storage area M1 automatically stores, together with the type of the synchronization signal, adjustment data which is always referred to when displaying an image, for each type of the synchronization signal corresponding to the video signal having a different type of the synchronization signal. And a plurality of areas (a first area M1a and a second area M1 in FIG. 5).
b, third area M1c,...). For example,
When the user inputs a video signal and adjusts the display state of the video, the adjustment is performed in an area in which the adjustment data having the same synchronization signal type as the current video signal is stored among the plurality of areas. The data is overwritten and stored. In this case, the previously stored adjustment data is deleted. As described above, the adjustment data stored in the automatic storage area M1 is always called from each corresponding area every time the same type of video signal is input to the apparatus.
Video display based on this adjustment data can be performed.

On the other hand, the user area M2 is an area in which the user himself / herself can appropriately store adjustment data which is appropriately referred to when displaying an image in accordance with the type of the synchronization signal. Area (first area M in FIG. 5)
2a, second area M2b, third area M2c,...)
It has. The difference between the user area M2 and the automatic storage area M1 is that the user himself / herself can arbitrarily store adjustment data at his / her own discretion.
Another advantage is that adjustment data having different contents for each video signal can be stored even for video signals having the same type of synchronization signal. For details of the process of saving and recalling adjustment data by the automatic storage area M1 and the user area M2,
It will be described later according to the flowcharts of FIGS.

Next, the operation of the video display device having the above configuration will be described.

First, the operation during normal use will be described. When the scan converter 5 is inserted from the expansion slot 4 on the back of the main body 1 and connected to the main body 1 by the connection connector 6 and the power switch 13 on the front panel of the main body 1 is turned on, power is supplied to each part of the main body 1 and Power is also supplied to each part of the scan converter 5 via the connection connector 6.

When power is supplied to the scan converter 5, the S / C controller 51 changes the control line 65 to H level. As a result, the control line 48 of the main unit 1 also goes to the H level, and the bus switch 47 switches to connect the serial bus 30a and the serial bus 30c. Thereby, the serial bus 50 of the scan converter 5 and the main body 1
Are connected to the serial buses 30c and 30a, and the S / C control unit 51 is connected to the user interface control unit 32 of the main body 1,
The control right for the OSD control unit 33 and the nonvolatile memory 34 is acquired. On the other hand, the main control unit 31 of the main body 1 loses the control right for those devices. S / C control unit 51
Reports that the bus has been switched to the main controller 31 of the main body 1 via the serial data line 66, the connector 6, and the serial data line 44. Thereafter, the S / C control unit 51 of the scan converter 5 operates in synchronization with the vertical synchronization pulse 63 input from the frequency conversion unit 52. After receiving the bus switching report, the main control unit 31 of the main unit 1 thereafter sets the user interface control unit 32
And access to the OSD control unit 33 is not performed. Thus, the user interface control unit 32 and the OSD control unit 33 are completely separated from the main control unit 31 both physically and software logic.

S / C control unit 51 of scan converter 5
Controls the state of the composite signal 58 input to the three-dimensional Y / C separation unit 56 and the RGB input signal 62 input from the RGB signal input terminal, is input from the panel operation key 3, or receives light from the remote controller. Each device connected to the serial bus 50, 30c, 30a is controlled in accordance with command data input via the unit. In addition, the main controller 31 of the main body 1 is controlled via the serial data lines 66 and 44. As a result, the S / C control unit 51 also indirectly controls the deflection control circuit 35 and the video control circuit 37 via the main control unit 31, and the S / C control unit 51 performs the main control of the entire system. Functions as a unit.

As described above, when the scan converter 5 is not connected to the main body 1, the input signal is only the RGB signal, the horizontal synchronization frequency is 31.5 kHz, and the vertical synchronization frequency is 70/60/50 Hz. What was a single scan type video display device is connected to the scan converter 5 so that, for example, the input signal is an RGB signal and a composite signal, the horizontal synchronization frequency is 15 kHz to 85 kHz, and the vertical synchronization frequency is 45 Hz to 130 Hz. The function is extended to a multi-scan type video display device.

The main controller 31 controls the contrast, brightness,
A user interface program (that is, user interface control) for allowing a user to freely adjust basic functions such as horizontal size, vertical size, horizontal shift, and vertical shift by a command from the panel operation keys 3 or a remote controller. Program for controlling the section 32), but no user interface programs for the expanded functions. On the other hand, the S / C control unit 51 of the scan converter 5
Indicates the basic functions described above, as well as hue (PHASE) and saturation (CHROM
A), horizontal width (H-WIDTH), vertical height (V-HEIGHT), horizontal center
(H-CENT), vertical center (V-CENT), still image (STILL), zoom
It also has a user interface program for extended functions such as (ZOOM). After the function is expanded by connecting the scan converter 5 to the main body 1, the S / C control unit 51 of the scan converter 5 manages all the user interfaces. However, it is the main control unit 31 of the main body 1 that directly controls various functions such as brightness, horizontal size, vertical size, horizontal shift, and vertical shift. Therefore, the scan converter 5
When the S / C control unit 51 receives a user command according to the user interface managed by itself from the user interface control unit 32, the S / C control unit 51 transmits the corresponding command via the serial data lines 66 and 44 to the main unit. 1
The main control unit 31 controls the deflection control circuit 35 and the video control circuit 37.

Next, referring to FIGS. 6 to 10, FIG.
The operation of the video display device having the above configuration will be described with reference to the flowcharts of FIGS. Here, FIGS. 6 to 10
Represents a display example of various menu screens displayed on the display unit 1a of the video display device. Note that, here, description will be made mainly of a portion related to adjustment of a video display state in the video display device, and description of other portions will be omitted.

First, the flow of the main operation of the present apparatus will be described with reference to the flowchart of FIG.

First, when the user turns on the power switch 13 of the main body 1 while the scan converter 5 is connected, power is supplied to each section of the apparatus. In this state, the composite signal 58 and the RGB
When a video signal such as the input signal 62 is input (step S
1), the S / C control section 51 searches whether or not adjustment data corresponding to the currently input video signal is stored in the automatic storage area M1 of the nonvolatile memory 53 (Step S2). Here, if the adjustment data corresponding to the input video signal is not stored, the video is displayed on the display unit 1a based on, for example, the initial settings set at the time of factory shipment (step S3). If the adjustment data corresponding to the input video signal is stored,
The image display state is adjusted based on the adjustment data, and the image is displayed on the display unit 1a (step S4).

Next, the user selects whether or not to perform display adjustment on the currently input video signal (step S5). When the display adjustment is not performed by the user, the S / C control unit 51 displays the video in the current video display state, and then the video signal currently input has not changed to a different signal. It is confirmed whether or not (Step S101). Here, when the video signal has changed to a different signal, the process returns to step S2. On the other hand, when the video signal has not changed to a different signal, the process returns to step S2.
The process returns to step 5. When the user performs display adjustment on the currently input video signal in step S5, first, the user selects whether to call the adjustment data from the user area M2 of the nonvolatile memory 3 (step S5).
6). Here, when the previously stored adjustment data is to be called from the user area M2, the process shifts to the adjustment data calling process described later in detail with reference to the flowchart of FIG. 13 (step S7).

On the other hand, if the adjustment data is not called from the user area M2, the user adjusts the video display state using the menu screen (step S).
8). In this case, first, the S / C control unit 51 is operated by the user via the user interface control unit 32 to control the main unit 1.
It is monitored whether or not there is an input from the panel operation key 3 of FIG. 6, and when the menu key 18 is pressed by the user, the main menu screen 22 of FIG. 6 is displayed. Next, the user moves the cursor 23 on the main menu screen 22 to “PIC CONTROL” using the selection keys 19 and 20.
When the user moves to the position "L" and presses the enter key 21, the adjustment menu screen 24 shown in FIG. 7 is displayed.
The user can adjust various video display states using the adjustment menu screen 24 shown in FIG. For example, when adjusting the brightness, the adjustment menu screen 24
Can be adjusted by moving the cursor 23 to "CONTRAST" displayed in the above section and inputting a desired adjustment value. It should be noted that the other video display states can be adjusted in the same manner. Here, the adjusted data is stored in a RAM area (not shown) of the S / C control unit 51.

When the menu key 18 is pressed after the adjustment of various video display states is performed on the adjustment menu screen 24 shown in FIG. 7, the S / C control unit 51 displays the main menu screen 22 shown in FIG. Redisplay. Here, the user
It is possible to select whether or not to store the adjustment data adjusted as described above in the user area M2 (step S
9). If the data is to be stored in the user area M2, the process proceeds to the adjustment data storing process described later in detail with reference to the flowchart of FIG. 12 (step S11). When not saving in the user area M2, the user operates the main menu screen 2 shown in FIG.
The menu key 18 is pressed while 2 is displayed. When the menu key 18 is pressed, the S / C control unit 51 transfers the adjustment data stored in the RAM area (not shown) to the nonvolatile memory 53 and saves the adjustment data in the automatic storage area M1 (Step S10). At this time, the S / C control unit 51
A search is made as to whether or not there is an area in which the adjustment data corresponding to the current video signal is stored among a plurality of areas of the automatic storage area M1. If there is an area in which adjustment data corresponding to the current video signal is stored,
The adjustment data is overwritten on the same area. In this case, the previously stored adjustment data is deleted.

On the other hand, if there is no area in which the adjustment data corresponding to the current video signal is stored, S / S
The C control unit 51 searches for an empty area in which no data is stored, and stores the adjustment data in that area. At this time, if there is no free area, the oldest saved area is searched, the adjustment data previously stored in that area is deleted, and new adjustment data is stored.

Thereafter, the adjustment data stored in the automatic storage area M1 is automatically recalled thereafter every time the same video signal is input to the apparatus.

Next, with reference to the flow chart of FIG. 12, a description will be given of a storing process when adjusting data is stored in the user area M2.

As described above, when the menu key 18 is pressed after the adjustment of various video display states on the adjustment menu screen 24 shown in FIG. 7, the S / C control unit 51
Displays the main menu screen 22 of FIG. 6 again. In the main menu screen 22 of FIG.
9 and 20, and the enter key 21, "PIC M
When "EMOLY" is selected, the S / C control unit 51 sets
Is displayed. On the memory menu screen 25, the selection keys 19 and 20 and the enter key 21 are further used to select "MEM SAV".
When "E" is selected, the S / C control unit 51 displays the save menu screen 26 of FIG. 9 (Step S12 of FIG. 12).
Using this save menu screen 26, the user can arbitrarily save the adjustment data in the user area M2 at his own discretion.

In the save menu screen 26 of FIG. 9, for example, "MEM 1" corresponds to the first area M2a of the user area M2 shown in FIG. 5, and the previously stored adjustment data exists in this area. In this case, the synchronization frequency and the polarity of the adjustment data stored in the area are displayed on the screen as the type of the synchronization signal. For example, FIG.
In the save menu screen 26, “MEM 1” corresponds to a video signal having a horizontal sync frequency of 31.5 kHz, a vertical sync frequency of 60 Hz, and a horizontal sync polarity and a vertical sync polarity of both types having a negative sync signal type. It can be seen that the adjustment data to be stored is stored. The contents of the adjustment data stored in the user area M2 are the same as those stored in the automatic storage area M1. If there is an area in which no adjustment data is stored, for example, in the save menu screen 26 of FIG.
“EMPTY” is displayed at the right position of “EM 4”.

When the user wants to store the current adjustment data on the save menu screen 26 shown in FIG. 9, the user selects an area to be stored with the selection keys 19 and 20, and presses the enter key 21. The S / C control unit 51 uses the selection key 1
By monitoring 9, 20, and the enter key 21, it is determined whether or not the user has selected an area (step S13). At this time, the user can select whether to cancel the saving of the adjustment data (step S17). Specifically, by pressing the menu key 18 on the save menu screen 26, the save of the adjustment data can be canceled. If the saving of the adjustment data is canceled by the user, the process proceeds to step S5 in FIG. When the user selects an area in step S13 and the adjustment data is in a state where the adjustment data can be stored (step S14; Y), the S / C control section 51 sets the user area of the selected area to the user area. The adjustment data is stored in M2, the saving process ends, and the process proceeds to the process of step S5 in FIG. However, at this time, the S / C control unit 51 determines that the image data can be saved if there is no video signal or if the adjustment data exceeds the input range that can be handled by the present apparatus ( Step S14; N), the saving process performed above is canceled (step S16),
The adjustment data is not stored in the user area M2. And
The process moves to step S5 in FIG.

Next, referring to the flowchart of FIG. 13, a calling process for calling the adjustment data from the user area M2 will be described.

When "MEM LOAD" is selected on the memory menu screen 25 shown in FIG. 8 using the selection keys 19 and 20 and the enter key 21, the S / C control section 51 displays the call menu screen 27 shown in FIG. (Step S21 in FIG. 13). Using this call menu screen 27, the user can arbitrarily call the previously stored adjustment data from the user area M2 at his own discretion. The means for calling the adjustment data using the call menu screen 27 and the panel operation keys 3 in FIG. 10 corresponds to the specifying means in the present invention.

The contents displayed on the call menu screen 27 in FIG. 10 are almost the same as those in the save menu screen 26 in FIG. 9, for example, “MEM 1” is the first area M2a of the user area M2 shown in FIG. When the previously stored adjustment data exists in this area, the synchronization frequency and the polarity of the adjustment data stored in the area are displayed on the screen as the type of the synchronization signal.

When the user calls the adjustment data previously stored in the user area M2 on the call menu screen 27 of FIG.
Use to select the area to call, and press the enter key 21. The S / C control unit 51 determines whether or not the user has selected an area by monitoring the selection keys 19 and 20 and the enter key 21 (step S22 in FIG. 13). At this time, the user can select whether to cancel the call of the adjustment data (step S27). Specifically, call menu screen 2
In 7, the user can cancel the calling of the adjustment data by pressing the menu key 18. If the call of the adjustment data has been canceled by the user, the process proceeds to step S5 in FIG. Also,
When the user selects an area in step S22, the S / C control unit 51 determines that the adjustment data can be called (step S23;
Y), the adjustment data of the user area M2 of the selected area is called, the display state is adjusted based on the adjustment data, and the video of the currently input video signal is displayed (step S24). However, at this time, the S / C control unit 51 determines that the adjustment data stored in the selected user area M2 does not correspond to the video signal currently input to the video display device (the type of the synchronization signal is different). Is determined to be impossible (step S23;
N), the calling process performed above is canceled (step S26), and the adjustment data is not called. Then, the process proceeds to step S5 in FIG.

If the calling of the adjustment data has been effectively performed in step S24, the S / C control unit 5
1 copies and stores the called adjustment data in the automatic storage area M1 of the nonvolatile memory 53 (step S2).
5), the process proceeds to the process of step S5 in FIG. In this state, if the user does not adjust the display state,
Each time a current video signal is input from the next time, the adjustment data copied and stored this time is automatically called from the automatic storage area M1 by the S / C control unit 51, and a video display based on the adjustment data is performed. You.

As described above, in the video display device according to the present embodiment, since the user can arbitrarily store adjustment data in the user area M2 of the nonvolatile memory 53 independently of the automatic storage area M1, the conventional memory For the sake of management, it can be used as a backup of the adjustment data that has been automatically deleted regardless of the user's intention. This eliminates the need for the user to adjust the video display state again even when the video signal corresponding to the adjustment data that has been erased regardless of the user's intention in the past, and the user's video display state Can be reduced.

In the related art, if the video display state is adjusted using the same adjustment data despite the fact that the frequency and polarity are the same as the type of the synchronization signal, FIG.
Each video 141 on the screen 140 shown in (a) and (b)
a and 141b may be displayed at different positions. In such a case as well, each adjustment data having the same type of synchronization signal is stored in the user area M2 corresponding to each video signal. By storing, it is possible to recognize each of them as different adjustment data, and it is possible to reduce the burden on the user for adjusting the video display state.

Also, with respect to the video signal of a video signal such as a VCR, adjustment data such as hue and saturation can be stored in the user area M2 for each video signal such as a different VCR. It is also possible to manage different adjustment data corresponding to a plurality of VCRs.

Although the present invention has been described with reference to the embodiment, the present invention is not limited to this embodiment and can be variously modified. For example, in the above embodiment, the video display device in which the scan converter 5 is connected from the outside has been described. However, the present invention may be applied to a device in which the scan converter 5 is built in advance. Further, the type of the synchronization signal is not limited to that shown in FIG. 9 and the like, and various types may be used. Further, the present invention is naturally applicable to a case where the video signal and the synchronization signal are input to the device in a separated state.

[0063]

As described above, according to the video display apparatus of the present invention, the adjustment data is stored in the second storage means provided separately from the normally referred first storage means, if necessary. Since the adjustment data can be appropriately stored, for example, the adjustment data which has been deleted regardless of the user's intention in the past can be separately stored, and by using this, the user needs to adjust the video display state again. Disappears.
In addition, even if the frequency and polarity of the synchronization signal are the same, a plurality of types of video signals having different display states when the same adjustment data is used are stored as different adjustment data for each video signal. Can be done. This allows the user to arbitrarily manage the adjustment data and reduce the user's burden of adjusting the video display state.

[Brief description of the drawings]

FIG. 1 is an external view illustrating a configuration of a video display device according to an embodiment of the present invention.

FIG. 2 is an external view illustrating a configuration of a video display device according to an embodiment of the present invention.

FIG. 3 is a front view illustrating an appearance of the video display device according to the embodiment of the present invention.

FIG. 4 is a control block diagram illustrating a configuration of a control system of the video display device according to the embodiment of the present invention.

FIG. 5 is a diagram illustrating a memory map of a nonvolatile memory of the video display device according to one embodiment of the present invention.

FIG. 6 is a diagram illustrating an example of a main menu screen displayed on a display unit of the video display device according to one embodiment of the present invention.

FIG. 7 is a diagram illustrating an example of an adjustment menu screen displayed on a display unit of the video display device according to one embodiment of the present invention.

FIG. 8 is a diagram illustrating an example of a memory menu screen displayed on a display unit of the video display device according to one embodiment of the present invention.

FIG. 9 is a diagram illustrating an example of a save menu screen displayed on a display unit of the video display device according to one embodiment of the present invention.

FIG. 10 is a diagram illustrating an example of a call menu screen displayed on a display unit of the video display device according to one embodiment of the present invention.

FIG. 11 is a flowchart illustrating an operation of the video display device according to the embodiment of the present invention.

FIG. 12 is a flowchart illustrating an operation of the video display device according to the embodiment of the present invention.

FIG. 13 is a flowchart illustrating an operation of the video display device according to the embodiment of the present invention.

FIG. 14 is a waveform diagram showing a video signal section of a video signal input in a conventional video display device.

FIG. 15 is an example of a display screen in a conventional video display device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Main body, 1a ... Display part, 3 ... Panel operation key, 5 ... Scan converter, 18 ... Menu key, 19, 20 ...
Selection keys, 21: Enter key, 22: Main menu screen, 23: Cursor, 24: Adjustment menu screen, 25
... Memory menu screen, 26 ... Save menu screen, 27
... Call menu screen, 31 ... Main control unit, 32 ... User interface control unit, 51 ... S / C control unit, 53 ...
Non-volatile memory, M1: automatic storage area, M2: user area

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 3/27 H04N 3/27 (72) Inventor Yoshinori Masuko 6-35 Kita Shinagawa, Shinagawa-ku, Tokyo Inside Sony Corporation

Claims (3)

[Claims] 1. A first storage means for storing, for each type of video synchronization signal used for video display, the video display adjustment data, video display adjustment data appropriately referred to at the time of video display. And a second storage means for appropriately storing the information corresponding to the type of the designated video synchronization signal. 2. A designating means for designating adjustment data stored in the second storage means, and when the adjustment data stored in the second storage means is designated by the designation means, A display means for displaying an image based on the adjusted data, and displaying an image based on the adjustment data stored in the first storage means when the adjustment data is not specified by the specifying means The image display device according to claim 1, further comprising: 3. When the adjustment data stored in the second storage unit is specified by the specification unit, the specified adjustment data is stored in the first storage unit. Item 3. The video display device according to Item 2.