JP3343927B2 - Television receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a television receiver, TV job transition information of the image quality adjustment information is obtained
The present invention relates to an image receiver.

[0002]

2. Description of the Related Art At present, a television receiver can use an AI function for image quality adjustment, and more beautiful images can be enjoyed by, for example, a BS broadcast, a high-definition television, or a laser disk. In order to enjoy such images in a more beautiful state, image quality adjustment according to the situation of the room to watch, or simply by user's preference,
For example, there is an increasing number of occasions in which an image that meets the needs of the user is adjusted according to the situation and preferences, such as adjusting the hue and brightness.

[0003]

However, even when an adjustment operation is performed to adjust the image to a better image than the current image, the image cannot be adjusted to the image desired by the user. Often you want to go back. The change of the parameter being adjusted during the adjustment operation is displayed, but if you try to return to the state of the image before the adjustment operation, the user will see the status of the previous parameter. It is difficult to memorize, and it is difficult to return to the same state as before the adjustment operation even if you try to gradually adjust and return, and the image state deteriorates due to the operation. In some cases, it will.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a hue, a contrast,
A video camera equipped with a video signal processor that adjusts image quality such as brightness
In a revision receiver, a video signal processing unit is included in the control unit.
Image quality adjustment transition that stores information about image quality adjustment values
A storage means is provided for storing image quality adjustment value information currently being adjusted for image quality and adjustment.
The image quality adjustment value information before adjustment is
It is configured so that it can be simultaneously displayed on a part .

[0005]

The image quality adjustment transition storage means provided in the control section stores the parameters at the time of the previous image quality adjustment, so that the parameter state before the adjustment is changed simultaneously with the change of the parameter being newly adjusted. The adjustment value can be displayed on the screen, and the adjustment can be performed while comparing the adjustment value before adjustment with the current adjustment value.

[0006]

FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention, particularly a video system circuit. 1
Is a tuner for selecting a broadcasting station, 2 is an intermediate frequency amplifier,
Reference numeral 3 denotes a video signal processing unit that processes a demodulated video signal, performs various processes such as color signal separation, color difference signal formation, and synchronization signal extraction, and supplies an RGB signal to a CRT (CRT) 11. It is to be visualized. Reference numeral 4 denotes a control unit that outputs a control signal to each of the functional circuits. The control unit 4 includes an input key switch (operation button).
Based on an operation signal of the remote commander 5 or the remote commander input from the light receiver 6 via the demodulator 7, various image quality controls, volume adjustment, selection of a broadcasting station, and the like are performed. In addition, the switch SW is controlled to switch between a broadcast wave and an input of an external device. Reference numeral 8 denotes a character generator for outputting various kinds of information on the display screen as a superimpose; 9 an on-screen display;
Denotes a synthesizing circuit for synthesizing the video signal from the video signal processing unit 3 and the character / graphic information output from the character generator 8. Also, in the synthesis circuit 10, VT
It is configured to insert an image for displaying an external video signal or a BS video signal or the like input from an external device such as an R or laser disk on a parent-child screen.

FIG. 2 is a block diagram showing functions of a portion related to an image quality parameter provided in the control section 4 of the television receiver of this embodiment. In this figure,
Reference numeral 4a denotes a timekeeping circuit for measuring an interval at which the image quality operation keys are input, and 4b denotes an image quality adjustment value memory for storing various adjustment values relating to the image quality of the video signal processing unit 3 in FIG. The television receiver of the present invention, for example, depending on the situation of the room to watch such as bright and dark, or according to the user's preference, when inputting the operation key of image quality adjustment,
The image quality adjustment value memory 4b stores the parameters related to the image quality adjustment of the video signal processing unit 3, and when an operation key for image quality adjustment is newly input next, the adjustment value related to the image stored in the image quality adjustment value memory 4b. Then, the adjustment value currently being adjusted is output on the screen at the same time.

FIG. 3 shows a display method when an up / down key for adjusting a picture level is operated. First, when the up / down key is input, various kinds of image quality adjustment are performed. The parameter level is displayed. That is, the various adjustment values set last time and stored in the image quality adjustment value memory 4b are displayed by the level bars 21, 22, 23, 24, 25.
And at the same time, the picture level bar 2
The picture level currently being adjusted is displayed by the level bar 26 on the right side of 3. When the index of the level bar moves to the right as shown in FIG. 4A and the picture level is set to DOWN, the index of the level bar moves to the left as shown in FIG. 4B. By doing so, the level change is displayed.

The timekeeping circuit 4a is provided for measuring the time between operation key inputs for image quality adjustment. For example, even if the operation keys are input little by little, the image quality adjustment value memory 4b is provided. Since the value of the parameter changes and it becomes difficult to compare with the parameter set last time, a time X seconds is set in advance, and while the input of the operation key is repeated within the time X seconds, This is for preventing a parameter value of the image quality adjustment value memory 4b from being updated as a single operation.

Therefore, when the level bar 26 displayed on the right side indicating the change of the adjustment value described with reference to FIG. 3 rises or falls little by little within the set time X seconds,
The previously set level bar 23 displayed on the left side does not change, and even when finely adjusting the image, it is possible to adjust based on the previously set value. The set time X
If, for example, two levels of picture and color are up / down within seconds, the level bars 26 and 27 of both the picture and color being adjusted are displayed on the screen as shown in FIG. May be output.

It is preferable that the set time X seconds is set to the same length as the time during which the level bar is displayed on the screen, for example. In addition to the level display, not only the level bar as shown in FIG. 3 but also the numerical display of each level parameter as shown in FIG. Will be able to understand.

The display position of the level bar and the numerical value related to the image quality adjustment described in FIGS. 3 and 5 may be such that the child screen M is fixed to the lower right of the entire screen as shown in FIG. 7, for example.
It may be made to be able to be moved according to time and case, such as upper right, lower right or lower left.

[0013]

As described above, in the television receiver provided with the image quality adjustment transition storage means of the present invention, when an image quality adjustment key is input, the previously set image quality adjustment status is simultaneously displayed on the screen. Since you can perform image quality control operations while comparing based on the adjustment status set last time, you can see at a glance how much adjustment value has been operated from the state set last time, and the image quality you are trying to set newly Even if the user does not like the image, there is an advantage that the same state as the previous setting can be easily restored, and the best image quality state can be maintained at any time.

[Brief description of the drawings]

FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a part of a control unit 4 of FIG.

FIG. 3 is an explanatory diagram of a display when an up / down key of a picture level is operated.

FIG. 4 is an explanatory diagram of a display when a level bar is up / down.

FIG. 5 is an explanatory diagram of a display when an up / down key for a picture level and a color level is operated.

FIG. 6 is an explanatory diagram when a numerical value of an image quality parameter is also displayed.

FIG. 7 is an explanatory diagram when a parameter display according to the embodiment of the present invention is output to a screen.

[Explanation of symbols]

 3 video signal processing unit 4 control unit 5a clock circuit 5b image quality memory

Claims (1)

(57) [Claims] 1. A television receiver having a video signal processing unit for adjusting image quality such as hue, contrast, and brightness, wherein a control unit stores information relating to an image quality adjustment value of the video signal processing unit. adjusting transition storage means is provided, the current picture
Television receiver characterized by being configured as a previous image quality adjustment values <br/> information to adjust the image quality adjustment value information in quality adjustment can be simultaneously displayed on a part of the screen currently being image quality adjustment.