JPH0678236A - Television receiver - Google Patents

Abstract

PURPOSE:To improve the operability for switching the input of a television receiver dealing with multiple input. CONSTITUTION:A video setting value storage means 81 which stores at least two or more sets of video setting values of (brightness), (white balance), etc., and a selective storage means 22 which stores the most appropriate set in the video setting value storage means at every input to be switched are provided, and the video setting value can be automatically switched at every switching of input of the television receiver. Therefore, it is not required to set the video setting value at the most appropriate value again by a manual operation at every input switching.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly to a multi-input television receiver compatible with various input formats.

[0002]

2. Description of the Related Art A television receiver has a built-in UHF / V
In addition to using as an original television receiver using an HF tuner, VTR (video tape recorder), V
With the widespread use of DPs (video disc players) and the like, the use of a monitor as an external input terminal (composite video signal input terminal) has increased. FIG. 7 is a block diagram showing a main configuration of a television receiver having a plurality of external input terminals. In the figure, 1 is a UH.
F / VHF antenna, 5 is UHF / V including IF circuit
HF tuner (hereinafter referred to as front end), 2 to 4
Is an external input terminal (A) that is a composite video signal input terminal
(C), 6 is a signal switching circuit, 7 is a video chroma processing circuit, 8 is a microcomputer, 9 is a remote control receiver,
Reference numeral 10 is a key switch, and 11 is a display device including a video output circuit. The operation of this television receiver will be described.

On-air (ON) of normal UHF / VHF broadcasting
The AIR) signal is output as a composite video signal from the front end 5 and is input to the signal switching circuit 6. For example, a VTR reproduction signal or the like is input from the external input terminals 2 to 4, and is input to the signal switching circuit 6. The microcomputer 8 controls the signal switching circuit 6 to selectively select one of the four signals from the front end 5 and the external input terminals 2 to 4, and the selected signal is the video chroma processing circuit 7
Is input to and processed, and is displayed on the display device 11.
Here, as a method of controlling the signal switching circuit 6 by the microcomputer 8, there is a method of sending a code to the remote control receiver 9 by a remote control transmitter or using a key switch 10.

As a conventional example of a television receiver having a plurality of external input terminals of this type, there is, for example, Japanese Patent Application No. 3-247758 previously proposed by the applicant of the present application.

[0005]

By the way, in recent years,
High-definition broadcasting is on-air, and high-definition V
With the release of TR and the like, media having a signal system different from the conventional ones have become widespread, and it has become necessary for a television receiver to support such signals. However, for example, when the MUSE system high-definition signal (the signal of the high-definition system proposed by NHK) is displayed on the monitor in the same manner as the conventional signal, there are problems such as "the screen is dark" and "the white balance value is closer to green". However, in the conventional input switching method, the user has to manually reset the image setting value to an appropriate value every time the input signal is switched between the conventional signal and the MUSE system high-definition signal, which is not convenient. It was pointed out.

The present invention has been made in view of the above points,
The purpose is that every time the input is switched, it can be automatically switched to the proper video setting value corresponding to this.
It is to provide a television receiver which is easy to use.

[0007]

In order to achieve the above object, the present invention is switched to a video set value storage means for storing at least two sets of video set values such as "brightness" and "white balance". A selection storage means for storing which set in the image setting value storage means is most appropriate for each input,
It is configured to automatically switch the image setting value to an appropriate value each time the input is switched.

[0008]

[Function] A required number of sets of image setting values such as "brightness" and "white balance" are stored in advance in the image setting value storage means, and the types of front end and external input terminals are stored in the selection storage means. Information indicating a set of video setting values corresponding to each is stored in advance. And by remote control transmitter etc.
When the input is switched (when the front end or each external input terminal is switched and selected), the image setting values such as "brightness" and "white balance" are automatically switched to appropriate values. By doing so, it is not necessary to reset the video set value to an appropriate value each time the input is switched as in the conventional case, and the usability is greatly improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the main configuration of the television receiver according to the present embodiment. In FIG. 1, the components equivalent to those in FIG. 7 are designated by the same reference numerals, and the description thereof will not be repeated. I will omit it. The block diagram itself of the television receiver of this embodiment is basically the same as that of FIG. 7, and a signal switching circuit is provided for one system of the internal front end 5 and three systems of the external input terminals 2-4. 6, and the microcomputer 8 is provided with an image setting value storage means 81, a selection storage means 82, and a setting switching processing means 83, which is a difference from FIG.

The image setting value storage means 81 stores a set of image setting values such as "brightness" and "white balance", and the selection storage means 82 stores the front end 5 and the external input terminals 2-4. Information indicating a set of video setting values corresponding to each type is stored. The setting switching processing means 83 selects the type of the front end 5 or the external input terminals 2 to 4 instructed to be selected according to the input switching command of the front end 5 or the external input terminals 2 to 4 instructed by key input or remote control input. Corresponding information (information indicating a set of video setting values) is found from the selection storage means 82, the video setting values of the set corresponding to this information are read from the video setting value storage means 81, and "brightness" and "white balance" are read. ", Etc. are controlled based on a predetermined set value, and a control command is given to the video chroma processing circuit 7 and the like. The operation functions of the respective means 81 to 83 are actually embodied by the processing executed by the program given in advance to the microcomputer 8.

FIG. 2 is a diagram showing a flow chart of a process of storing the video set value in the video set value storage means 81, FIG. 3 is a diagram showing a flow chart of the set value selection storage process in the selection storage means 82, and FIG. FIG. 5 is a diagram showing a flow chart of the input switching processing by the switching processing means 83, FIG. 5 is a diagram showing the memory contents of the video setting value storage means 81, and FIG.
It is a figure which shows the memory content of 2.

First, FIG. 2 shows a method of storing the image setting value.
Will be described with reference to FIG. In this embodiment, for example, it is assumed that the first and second types of video settings can be set. Also, the contents of the video settings are 2 for "brightness" and "white balance".
Shall be one. Now, when the storage mode of the image setting value is selected by key input or remote control input, in step ST1 of FIG. 2, it is determined whether the set of the "first" image setting value or the set of the "second" image setting value. You are prompted to make a choice. And
If, for example, "first" is selected in step ST1, the values of "brightness 1" and "white balance 1" are set in step ST2, and in step ST3,
Write this in the memory 1 of the image setting value storage means 81,
For example, as shown in FIG. 5, "brightness 1 = 50" and "white balance 1 = 50" are stored. On the other hand, when "second" is selected in step ST1, the same is true. In step ST4, the values of "brightness 2" and "white balance 2" are set, and in step ST5 this is set in the image setting value storage means. For example, as shown in FIG. 5, "brightness 2 = 100" and "white balance 2 = 100" are stored in the memory 2 of memory 81. The image setting value storage means 81 whose storage has been completed in this way
The contents of the memory are as shown in FIG.

Next, FIG. 3 shows a method of storing the setting value selection.
Will be described with reference to FIG. When the storage mode for setting value selection is selected by key input or remote control input, the input number (memory number of the selection storage means 82) becomes "0" in step ST11 of FIG. In this embodiment, as shown in FIG. 6, the input number “0” corresponds to the front end 5, the input number “1” corresponds to the external input terminal (A) 2, and the input number “2”. Corresponds to the external input terminal (B) 3, and the input number “3” corresponds to the external input terminal (C) 4. Next, in step ST12, the one suitable for the front end 5 is selected from the set "first" and "second" of the image setting values stored in the process of FIG. At this time, if "first" is selected, step ST
When the setting value “0” (information indicating the set of the first image setting values) is written in the memory number “0” of the selection storing means 82 in 13, and the “second” is selected in the same manner, in step ST14 Memory number "0" of the selection storage means 82
Setting value "1" (information indicating the set of the second video setting values)
Is written (in FIG. 6, the case where the setting value “0” is written is shown). Next, step ST15
In step ST16, select "YES" and add "1" to the input number to set the input number (memory number of the selection storage means 82) to "1". Returning to step ST12, the same processing is continued. In this way, all input numbers "0"-
After the setting value of "3" is determined, "NO" is selected in step ST15, and the process ends. In this way, the memory contents of the selected storage means 82 whose storage has been completed are as shown in FIG. 6, for example.

Next, the input switching operation by the setting switching processing means 83 will be described with reference to FIGS. 4, 5 and 6.
First, it is assumed that the output from the signal switching circuit 6 is the input from the front end 5 having the input number "0". When the input is switched by key input or remote control input in this state, 1 is added to the input number in step ST21 of FIG. 4 and the input number becomes "1" (when the external input terminal (A) 2 is selected). Become). When the original input number is "1", the input number becomes "2" in ST21 (external input terminal (B) 3 is selected), and when the original input number is "2", ST21 In, the input number is “3” (external input terminal (C) 4 is selected). However, when the original input number is "3", the input number does not become "4" and the input number returns to "0".

Subsequently, in step ST22, the set value contents of the memory number (input number) of the selection storage means 82 stored in the processing of FIG. 3 is judged. Now, when the input number is set to "1" in ST21, the set value is "0" as shown in FIG. 6, so the process proceeds to step ST23. In step ST23, the video value information in the memory 1 of the video setting value storage means 81 corresponding to the setting value “0” in FIG. 6 (FIG. 5).
Based on the above, the image settings are "brightness 1 = 50" and "white balance 1 = 50". Next, in step ST25, the signal switching circuit 6 is controlled to switch to the input from the external input terminal (A) 2 corresponding to the input number "1", and the processing is completed.

Similarly, when the input number is set to "2" in step ST21 (when the external input terminal (B) 3 is selected), the set value is "1" as shown in FIG. Then, the process proceeds to step ST24. Step ST24
Then, based on the image value information (FIG. 5) of the memory 2 of the image setting value storage means 81 corresponding to the setting value “1” in FIG. 6, the image setting is “brightness 2 = 100”, “white balance 2 = 10”.
0 ”. Next, in step ST25, the signal switching circuit 6 is controlled to switch to the input from the external input terminal (B) 3 corresponding to the input number "2", and the processing is completed.

Here, NTSC is connected to the external input terminal (A) 2.
When a high-definition signal is input to the signal and the external input terminal (B) 3, as described above, the external input terminal (A) 2
The image setting value is automatically changed by switching the input between the input terminal and the external input terminal (B) 3. Therefore, it is possible to display the high-definition signal on the same monitor that displays the NTSC signal without the need to manually reset the image setting value to the proper value each time the input switching operation is performed, unlike the conventional case. However, this does not cause problems such as "dark" and "white balance is closer to green", and usability is greatly improved.

In the example described above, only two types of "brightness" and "white balance" are described as the image setting values, but in addition to these, "color tone", "color depth", "black level", "Horizontal / vertical image quality" is considered. Further, in the above-mentioned example, the example including the front end (UHF / VHF tuner) 5 and the external input terminals 2 to 4 is shown.
UHF / VHF tuner or satellite broadcast tuner, NT
SC composite video signal input terminal, S (super) video signal input terminal, MUSE detection input terminal, computer RGB
Input terminal, high-definition input terminal (RGB or YP _B
The present invention can be applied to any configuration as long as it has a plurality of P _R ), at least two types of which are allowed to overlap, and an input switching unit that selectively selects the plurality of inputs.

In addition, in the above-mentioned example, only the video setting value is described, but the automatic setting of the audio setting value such as “low tone”, “treble”, “left / right balance”, “loudness”, etc. should be similarly performed. You can

[0020]

As described above, according to the present invention, it is possible to provide a user-friendly television receiver which can automatically set an appropriate video set value corresponding to each input switching.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram showing a processing flow of storing a video setting value in a video setting value storage means of FIG.

FIG. 3 is an explanatory diagram showing a processing flow for selecting and storing a set value in a selection storage means of FIG.

4 is an explanatory diagram showing an input switching processing flow by the setting switching processing means of FIG. 1. FIG.

5 is an explanatory diagram showing a memory content of a video setting value storage unit in FIG. 1. FIG.

FIG. 6 is an explanatory diagram showing a memory content of a selection storage unit of FIG. 1.

FIG. 7 is a block diagram showing a main part configuration of a television receiver including a plurality of conventional external input terminals.

[Explanation of symbols]

 1 UHF / VHF antenna 2 External input terminal (A) 3 External input terminal (B) 4 External input terminal (C) 5 UHF / VHF tuner (front end) 6 Signal switching circuit 7 Video chroma processing circuit 8 Microcomputer 9 Remote control reception Part 10 Key switch 11 Display device 81 Image setting value storage means 82 Selection storage means 83 Setting switching processing means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadao Kubota 4-6, Surugadai, Kanda, Chiyoda-ku, Tokyo Inside Hitachi, Ltd.

Claims (2)

[Claims] 1. A UHF / VHF tuner or satellite broadcast tuner, NTSC composite video signal input terminal, S video signal input terminal, MUSE detection input terminal, RG for computer.
B input terminal, high-definition input terminal (RGB or YP
_B P _R) of a plurality forgive overlapping at least two kinds, in a television receiver having an input switching means for alternatively selecting said plurality of input, brightness, white balance, etc. The input switching means, and a storage means capable of storing a plurality of sets of video values and a storage means for designating and storing a set suitable for each of the plurality of inputs from the plurality of sets of video values. A television receiver characterized in that it is possible to automatically switch to an optimum video value when the plurality of inputs are switched. 2. The storage device according to claim 1, further comprising: storage means capable of storing a plurality of sets of audio values such as high and low tones and balance together with the set of video values; A storage means for designating and storing a set suitable for each of a plurality of inputs is provided, and when the plurality of inputs are switched by the input switching means, the optimum video value and audio value can be automatically switched. The television receiver characterized in that.