JP2002320162A - Image display device and method of adjusting the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable operation of adjusting an image display device to be carried out efficiently, taking advantage of OSD function and a test pattern display function. SOLUTION: When adjustment items are selected in an adjustment mode by a microcontroller 9, the operation of a test pattern signal generator 7 and of an OSD signal generator 6 is controlled so as to automatically cause stop the display of a test pattern formed of test pattern signals generated by the test pattern signal generator 7 to be stopped and to display an image formed of OSD signals generated by the OSD signal generator 6 on the display screen. When an adjustment value is changed in an adjustment mode, the operation of the test pattern signal generator 7 and the OSD signal generator 6 is controlled, so as to made the display of an image formed of the OSD signals generated by the OSD signal generator 6 stop automatically on the display screen, and to display a test pattern formed of test pattern signals generated by the test pattern signal generator 7 on the display screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device such as a television receiver, a projector device or a monitor device, and a method of adjusting the same, and more particularly, to a screen display (OSD: On Screen Dispaly) for displaying characters on a display screen. The present invention relates to an image display device having a function and a test pattern signal generation function, and an adjustment method thereof.

[0002]

2. Description of the Related Art Conventionally, an image display device such as a television receiver, a projector device or a monitor device has an OSD function for displaying various characters on a display screen such as a selected channel display, a video menu display, and a voice menu display. It is installed. In the image display device, a cross hatch, a white 100
A test pattern display function for displaying various test patterns such as% and color bar on a screen is provided. At the time of factory adjustment and market adjustment of the image display device, the OSD
Display adjustment items and adjustment values on the screen by function,
Various test patterns such as cross hatch, 100% white, and color bar are displayed on the screen by the test pattern display function, and various adjustments such as image distortion adjustment, image size adjustment, white adjustment, and hue adjustment are performed.

[0003]

By the way, in the conventional image display device, while adjusting the display characteristics, the OSD function displays the adjustment items and adjustment values on the screen as shown in FIG. Since the test pattern is displayed on the screen by the display function, there is a problem that not only is it difficult to read the adjustment items and adjustment values, but also it is difficult to adjust the display portion of the adjustment items and adjustment values. Further, since it is difficult to adjust the display portion of the adjustment item or the adjustment value, it is necessary to perform an operation such as moving the display position of the adjustment item or the adjustment value, which causes a reduction in the efficiency of the adjustment work.

[0004] Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and an object of the present invention is to make it possible to efficiently perform an adjustment operation using an OSD function and a test pattern display function. I do.

[0005]

An image display apparatus according to the present invention comprises a screen display signal generating means for generating a screen display signal for displaying adjustment items and the like on a screen, and a test pattern signal generating means for generating a test pattern signal. Means, a signal superimposing means for superimposing the screen display signal and the test pattern signal on the image signal, and a control means for controlling the operations of the screen display signal generating means and the test pattern signal generating means. At the time of selecting an adjustment item in the mode, the test pattern display by the test pattern signal generated by the test pattern signal generating means is automatically stopped, and the screen display by the screen display signal generated by the screen display signal generating means is performed. Control the operation of the screen display signal generating means and the test pattern signal generating means so that In the operation of changing the adjustment value, the screen display by the screen display signal generated by the screen display signal generating means is automatically stopped, and the test pattern is displayed by the test pattern signal generated by the test pattern signal generating means. Thus, the operation of the screen display signal generating means and the test pattern signal generating means is controlled.

The present invention also relates to a method for adjusting an image display device having a screen display function of displaying characters on a display screen and a test pattern signal generating function, wherein the test pattern display by the test pattern signal is automatically stopped. When the screen display is performed by the screen display signal, the selection operation of the adjustment item is received, and the change operation of the adjustment value of the received adjustment item is received, the change of the adjustment value according to the received change operation is reflected in the adjustment target. And automatically stopping the screen display by the screen display signal and displaying a test pattern by a test pattern signal.

[0007]

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

The present invention is applied to, for example, a television receiver having a configuration as shown in FIG. The television receiver 10 includes a television signal receiving unit 2 connected to the antenna 1, a video signal processing circuit 3 to which the output of the television signal receiving unit 2 is supplied, and an output of the video signal processing circuit 3 to be supplied. Signal superimposing circuit 4,
, A screen display (OSD: On Screen Dispaly) signal generator 6 and a test pattern signal generator 7 connected to the signal superposition circuit 4,
Of the television signal receiving unit 2, the video signal processing circuit 3, the OSD signal generator 6, the test pattern signal generator 7, and the deflection driving circuit 8 It has a microcontroller 9 connected via the control unit.

In the television receiver 10, the operation of the television signal receiving section 2 is controlled by a microcontroller 9 via a bus, receives a television signal of a desired channel, and displays an image of the received channel. The signal is supplied to the video signal processing circuit 3. The video signal processing circuit 3 performs predetermined process processing such as color demodulation processing and color matrix processing on the video signal of the channel received by the television signal receiving unit 2 and displays an image of three primary colors (RGB) from the video signal. Generate a signal. Then, the image display signal generated by the video signal processing circuit 3 is supplied to the cathode of the cathode ray tube 55 via the signal superimposing circuit 4 so that the television signal of the desired channel received by the television signal receiving unit 2 is transmitted. An image based on the John signal is displayed on the screen of the cathode ray tube 5.

The operation of the OSD signal generator 6 is controlled by a microcontroller 9 via a bus, generates an OSD signal for screen display, and supplies it to the signal superposition circuit 4. The OSD signal generator 6 is an OS for displaying various characters on a display screen, such as a selected channel display, a video menu display, an audio menu display, and an adjustment menu display, under the control of the microcontroller 9.
Generate a D signal.

The test pattern signal generator 7
, The operation of which is controlled by the microcontroller 9 via a bus, generates a test pattern signal and supplies it to the signal superposition circuit 4. The test pattern signal generator 7 generates various test pattern signals such as a cross hatch, 100% white, and a color bar under the control of the microcontroller 9.

The signal superimposing circuit 4 superimposes the OSD signal generated by the OSD signal generator 6 on the image signal generated by the video signal processing circuit 3 to display a selected channel, display a video menu, By displaying an audio menu, an adjustment menu, and the like, and superimposing a test pattern signal generated by the test pattern signal generator 7 on an image signal generated by the video signal processing circuit 3, cross hatch and white Various test patterns such as 100% color bars are displayed on the screen.

In the television receiver 10 having such a configuration, the microcontroller 9 is shown in the flowchart of FIG. 2 in an adjustment mode for performing various adjustments such as image distortion adjustment, image size adjustment, white adjustment, and hue adjustment. The control operation according to the procedure is performed.

That is, the microcontroller 9
Controls the OSD signal generator 6 and the test pattern signal generator 7 so that the OSD display is turned on as an initial state and the test pattern display is turned off when entering the adjustment mode (step S1).

In this state, the process waits until any operation input is received (step S2).

When an operation input is received in step S2, it is determined whether or not the operation input selects an item (step S3).

If the result of the determination in step S3 is "Y
If it is determined that "ES", that is, the accepted operation input is the selection of an item, a process of switching the display item is performed (step S4), and the test pattern display is turned off and the OSD display is turned on. The OSD signal generator 6 and the test pattern signal generator 7 are controlled (step S5), and the process returns to step S2 to wait until the next operation input is received.

If the result of the determination in step S3 is "NO", that is, if it is determined that the received operation input is not an item selection, it is determined whether or not the received operation input is a change in the adjustment value (step S3). S6).

If the result of the determination in step S6 is "Y
ES ”, that is, when it is determined that the operation input is a change of the adjustment value, a process of changing the adjustment value is performed (step S7).
The OSD signal generator 6 and the test pattern signal generator 7 are controlled so as to turn off the SD display (step S
8) Return to step S2 and wait until the next operation input is received.

If the result of the determination in step S6 is "NO", that is, if the received operation input is neither the change of the item nor the adjustment value, the process returns to step S2 without performing any operation and the next operation input is performed. Wait until accepted.

As described above in detail, according to the present invention, the OSD display is automatically turned off during the adjustment using the test pattern.
The D display does not hinder the adjustment, and the adjustment can be performed by checking the entire screen.

Since the test pattern display is automatically turned off while the adjustment item is being selected by the OSD display, the test pattern display indicates that the test pattern display is turned off.
Adjustment items by the SD display are not difficult to read.

Here, the operation of the adjustment mode will be specifically described by taking as an example a case where the deflection drive circuit 8 for driving the deflection system 5A of the cathode ray tube 5 is adjusted.

That is, when entering the adjustment mode, step S
In step 1, the OSD display is turned on, and an adjustment item of the deflection device is selected (steps S3 to S5). In this state, the test pattern display remains off, so that the adjustment items displayed on the screen can be easily visually recognized. The selected adjustment item and the adjustment value at that time are displayed on the OSD. Then, for example, as shown in FIG. 3, it is assumed that the screen size adjustment “SERVICE RDRV” is selected as the adjustment item.

Next, at the same time as the adjustment value is reflected on the deflection device for changing the adjustment value, the OSD display is turned off.
As shown in (5), the test pattern display is turned on (steps S6 to S8).

In the screen size adjustment, the deflection driving circuit 8
The amplitude of the drive waveform is changed according to the set value from the microcontroller 9 to change the screen size. And
The adjuster performs an operation of adjusting the adjustment value so as to obtain an appropriate screen size by trial and error while watching the test pattern.

In this television receiver 10, while the adjustment value is being changed, the OSD display is off.
The OSD display does not hinder the adjustment, and the adjustment can be performed by checking the entire screen.

When the adjustment of the deflection device is completed and an item is selected again to adjust another device, the test pattern display is turned off and the OSD display is turned on (steps S3 to S5). You can choose the item.

In the above-described embodiment, the OSD display and the test pattern display are simultaneously switched on / off. However, the OSD display and the test pattern display are simultaneously displayed for a predetermined time, and then the on / off switching is performed. It may be performed.

In the above embodiment, the present invention is applied to a television receiver, but the present invention can be applied to various image display devices such as a projector device and a monitor device.

[0031]

As described above in detail, according to the present invention, the OSD display is automatically turned off during the adjustment using the test pattern.
The SD display does not hinder the adjustment, and the adjustment can be performed by checking the entire screen.

Also, while the adjustment item is being selected by the OSD display, the test pattern display is automatically turned off.
Adjustment items by the SD display are not difficult to read.

Therefore, according to the present invention, an adjustment operation utilizing the OSD function and the test pattern display function can be efficiently performed.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a television receiver to which the present invention has been applied.

FIG. 2 is a flowchart showing a procedure of a control operation of a microcontroller in an adjustment mode of the television receiver.

FIG. 3 is a diagram showing an example of an OSD display in the adjustment mode of the television receiver.

FIG. 4 is a diagram showing a display example of a test pattern in the adjustment mode of the television receiver.

FIG. 5 is a diagram illustrating an example of OSD display and test pattern display during adjustment of display characteristics of a conventional image display device.

[Explanation of symbols]

Reference Signs List 1 antenna, 2 television signal receiving section, 3 video signal processing circuit, 4 signal superimposing circuit, 5 cathode ray tube, 5A
Deflection system, 6 OSD signal generator, 7 test pattern signal generator, 8 deflection drive circuit, 9 microcontroller, 10 television receiver

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 17/04 H04N 17/04 Z (72) Inventor Shigeki Ohno 6-7-35 Kita Shinagawa, Shinagawa-ku, Tokyo No. Sony Corporation F term (reference) 5C025 BA28 BA30 CA09 CB10 5C061 BB02 CC05 EE03 EE11 EE19 EE21 5C082 AA01 AA02 BA02 BA12 BB02 BB03 BB12 BB15 BC03 BD01 CA56 CB08 MM10

Claims (2)

[Claims] 1. A screen display signal generating means for generating a screen display signal for displaying an adjustment item or the like on a screen, a test pattern signal generating means for generating a test pattern signal, and displaying the screen display signal and the test pattern signal on an image. Signal superimposing means for superimposing on a signal; and control means for controlling operations of the screen display signal generating means and the test pattern signal generating means, wherein the control means performs the operation of selecting the adjustment item in the adjustment mode. The screen display signal generating means and the test pattern so as to automatically stop the test pattern display by the test pattern signal generated by the generating means and to perform the screen display by the screen display signal generated by the screen display signal generating means; Controls the operation of the signal generation means, when changing the adjustment value in the adjustment mode,
The screen display signal generation means is configured to automatically stop the screen display based on the screen display signal generated by the screen display signal generation means and to perform the test pattern display by the test pattern signal generated by the test pattern signal generation means. An image display device for controlling the operation of the means and the test pattern signal generating means. 2. An adjustment method for an image display device having a screen display function of displaying characters on a display screen and a test pattern signal generation function, wherein the test pattern display based on the test pattern signal is automatically stopped, and the screen display signal is adjusted. When the screen display is performed according to and the selection operation of the adjustment item is received, and the received operation of changing the adjustment value of the adjustment item is received, the change of the adjustment value corresponding to the received change operation is reflected in the adjustment target, and A method for adjusting an image display device, comprising automatically stopping screen display by a screen display signal and displaying a test pattern by a test pattern signal.