JPH06133238A - Broadcast viewing state automatic changeover device - Google Patents

Abstract

PURPOSE:To switch the adjustment state of the system including a television receiver automatically into a proper standard adjustment state in response to a program genre. CONSTITUTION:A code is superimposed on a broadcast signal corresponding to a program genre and a program data detection circuit 12 detects the code. The detected program genre code is given to, e.g. a sound quality adjustment circuit 14. Then the sound quality adjustment circuit 14 sends control data to a sound processing circuit 13, in which preset adjustment is implemented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a program genre code superimposed on a broadcast signal and automatically obtains effective signal processing (adjustment) for the program content. The present invention relates to an automatic switching device.

[0002]

2. Description of the Related Art A currently multiplexed television signal includes a voice multiplex broadcasting signal, and bilingual broadcasting or stereo broadcasting is possible. In this case, a pilot signal indicating the type of audio signal is simultaneously multiplexed with the television signal. Corresponding to this audio multiplex broadcast signal,
On the receiver side, the pilot signal is identified, and in the case of stereo broadcasting, the audio processing system is automatically switched to stereo processing, and in the case of bilingual broadcasting, either one is selected according to the user's preference. Alternatively, they can be output simultaneously.

When viewing a television broadcast by connecting the receiver body to an external audio device or an external enlarged display, the sound field is adjusted according to the music genre, and the image quality of the image is adjusted. Tends to be adjusted to increase the sense of presence.

[0004]

In the conventional system,
In viewing a television broadcast, the viewer adjusts the sound field and the image quality each time according to the genre of the program. In particular, when an external device such as an audio device or a display device for enlargement is further connected to the television receiver, adjustment and switching of these external devices are manually performed together with the television receiver. For this reason, there is a problem that the user is burdened in terms of operability and it is troublesome to handle unless the user has specialized knowledge.

Therefore, an object of the present invention is to provide a broadcast viewing state automatic switching device capable of automatically switching the adjustment state of a system including a television receiver to an appropriate standard adjustment state according to a program genre. And

[0006]

The present invention provides means for detecting a code of broadcast content from a broadcast signal, and control for a signal processing device preset according to the broadcast content code detected by this means. Means for generating data and adjusting the output of the signal processing device.

[0007]

By the above means, the control state of the system including the television receiver is automatically set to the standard optimum state according to the broadcast contents, so that the viewer is burdened with the operation of the system. Is reduced.

[0008]

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

FIG. 1A shows an embodiment of the present invention.
A broadcast signal is introduced into the receiving circuit 11, and the signal (for example, an intermediate frequency signal) selected here is supplied to the program data detecting circuit 12. The audio signal demodulated by the receiving circuit 11 is supplied to the audio processing circuit 13. The program data detection circuit 12 detects a broadcast content code superimposed on the introduced signal, for example, a code indicating the genre of the program. This program genre code is the sound quality adjustment circuit 14
Entered in. The sound quality adjustment circuit 14 has control data for the audio circuit 13 corresponding to the program genre code, and controls the sound quality adjustment circuit 14 based on this control data. The contents of the control data include the balance of audio channels, sound field, frequency characteristics (sound quality), and the like.

As the insertion location and insertion method of the program genre code with respect to the broadcast signal, an appropriate method is adopted according to the format of the broadcast signal. For example, as a broadcasting system of an audio signal, there are FM broadcasting, AM broadcasting, broadcasting by digital modulation, and the like. In the case of FM broadcasting and AM broadcasting, a signal obtained by modulating the program genre code at a frequency that does not cause interference is multiplexed with the broadcasting signal and transmitted. In digital modulation broadcasting, the insertion position of digital data is determined and the program genre code is multiplexed here. Further, in the television broadcasting transmitted together with the television signal, it is possible to multiplex in an empty area or an area not appearing on the screen regardless of digital or analog broadcasting.

According to the above embodiment, if the control data, which is considered to be a standard adjustment state, is stored in advance in the memory of the sound quality adjustment circuit 14 in accordance with the program genre code, the operation of the user is disturbed. Instead, the system is adjusted automatically. Also, the user can set the adjustment environment intended on the broadcast side. Figure 1 (B)
Is another embodiment of the present invention.

This embodiment is an example in which the system is applied to a VTR or a television receiver, and the same functional portions as those in FIG. 1A are designated by the same reference numerals. The television signal demodulated by the receiving circuit 11 is input to the video processing circuit 16. The program genre code detected by the program data detection circuit 12 is also supplied to the image quality adjustment circuit 15. The image quality adjustment circuit 15 applies control data preset according to the program genre code to the video processing circuit 16 to perform adjustment. As a result, the image quality, contrast, brightness, color tone, etc. are automatically adjusted, and an adjustment state considered to be optimal for the program content can be obtained.

The above embodiment is an example of controlling the signal processing circuit inside the television receiver or inside the VTR, but the present invention is not limited to this, and the television receiver and V
It can also be applied to the case where TR is used in combination with an external device such as an audio device or a large display device.

FIG. 2A shows an embodiment applied when a VTR (or a television receiver) and an external device are used in combination, for example. The same parts as those in the previous embodiment are designated by the same reference numerals. In the case of this embodiment, the output of the audio processing circuit 13 is the audio amplifier 2 as an external device.
1 is an example of being supplied. In this case, the output (program genre code) of the program data detection circuit 12 is supplied to the external device control circuit 22. The external device control circuit 22 is
External device control data corresponding to a program genre code is stored in a memory in advance, and this control data is supplied to a remote control (referred to as remote controller) transmission circuit 23,
An external audio amplifier 21 can be controlled through this transmission circuit 23.

The external device is not limited to a voice amplifier, but various devices can be used. For example, as shown in FIG. 2 (B), the environment control system 30 may be controlled. The environment control system 30 is, for example, lighting in a viewing room, an air conditioner, a blower, or the like. The internal signal processing circuit may be controlled simultaneously with the control of the external device. Also, the automatic adjustment function may be canceled in consideration of the case where the user controls manually.

Further, in the above system, when the system is controlled by the program genre code, the code is detected by the program data detection circuit 12, and therefore the presence or absence of this code is displayed on the display unit for viewing. It is possible to make it cheaper for the operator to know whether the current adjustment state is automatic.

The above embodiment has described that when the broadcast signal is received, the signal processing circuit of the VTR and the externally connected external device are appropriately controlled. However, the VTR also has a playback function. Therefore, the program genre code is recorded on the magnetic tape, and at the time of reproduction, the program genre code is reproduced and given to the control circuit as in the case of receiving the broadcast signal.

FIG. 3 shows the embodiment. That is, the program genre code detected by the program data detection circuit 12 is supplied to the external device control circuit 22 via the switch 41 and also input to the recording / playback unit 42. The recording / reproducing unit 42 can record and reproduce the program genre code in various embodiments. For example, there is a method of setting a band different from the luminance and color signals and modulating and recording in this frequency band, or a method of recording and reproducing in a control track or an audio track without causing a beat. At the time of reproduction, the switch 41 is switched so as to introduce the program genre code reproduced by the recording / reproducing unit 42 into the external device control circuit 22.

In the above description, the adjustment state of the system is automatically switched according to the program genre code. However, one program does not always have one adjustment state. For example, the scenes in the program may be automatically switched. For example, control may be performed so as to switch between the commercial time and the main program, to make the image quality hard (hard), or to add a sharp edge to the sound in an action scene or a fast-moving scene of a movie. Furthermore, in a horror scene, etc., the interior lighting should be dim.
Control states such as bass enhancement are possible. Thus, by giving the system control data as needed, it is possible to give a realistic video and audio environment.

[0020]

As described above, according to the present invention,
The adjustment state of the system including the television receiver can be automatically switched to an appropriate adjustment state according to the broadcast content, and the burden on the operation side of the user can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing another embodiment of the present invention.

FIG. 3 is a block diagram showing still another embodiment of the present invention.

[Explanation of symbols]

11 ... Receiving circuit, 12 ... Program data detecting circuit, 13 ... Audio processing circuit, 14 ... Sound quality adjusting circuit, 15 ... Image quality adjusting circuit, 16 ... Video processing circuit, 21 ... Audio amplifier, 22 ... External device control circuit, 23 ... Remote control transmission circuit, 30 ... Environmental control system, 41 ... Switch, 42 ... Recording / reproducing unit.

Claims (5)

[Claims] 1. A means for detecting a broadcast content code superimposed on a broadcast signal, and generating and outputting control data of a signal processing device preset according to the broadcast content code detected by this means. An automatic broadcast viewing state switching device, characterized in that it is provided with means for adjusting. 2. The broadcast viewing state automatic system according to claim 1, wherein the signal processing device controlled by the means for adjusting the output is an audio signal processing circuit, and audio frequency characteristics are automatically switched. Switching device. 3. The broadcast viewing state according to claim 1, wherein the signal processing device controlled by the means for adjusting the output is a video signal processing circuit, and at least image quality, hue and brightness can be switched. Automatic switching device. 4. The broadcast viewing according to claim 1, wherein the signal processing device controlled by the means for adjusting the output is an external device provided outside the set that receives the broadcast signal. Automatic state switching device. 5. The broadcast viewing state automatic switching device according to claim 1, wherein the broadcast content code is a program genre code.