JPH01872A - Commercial program detection/control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for detecting and controlling received television. This invention relates to a control device for television signals when returning.

(Prior art) In conventional television broadcasting, when changing from a normal broadcast program to a commercial program, the RC simply switches the mutual video signals during the entire vertical planking period, and only needs to see the video signals before and after the switch. It was not possible to determine which part and which section was the normal program video, and which part the commercial video was superimposed on. Therefore, if a television program was recorded, the commercial program would inevitably be shown on the front page.

(The pinnacle of the invention's solution) In the conventional commercial program detection/control device described above,
No important information is given to distinguish between normal program video and commercial video after F'1il. For this reason, for example, when recording the video on the receiver, even if you want to record only the normally necessary group A, when it comes to commercial program time, commercial programs that are often unnecessary at the time of recording There was a drawback that even the video of the camera was unavoidably recorded.

An object of the present invention is to receive a television signal transmitted with an identification signal superimposed on the 1H of the first video section after the vertical blanking period, before the start of a commercial broadcast program and immediately before the end of the program. , When detecting the above 6 separate signals from among these and recording a broadcast program using them, the above drawbacks are eliminated by skipping this section and recording during the permitted time period for commercial broadcasts. An object of the present invention is to provide a commercial program detection/control device 11 configured in a V configuration so that only program videos can be continuously recorded.

(Means for Solving the Problems) The commercial program detection/control device according to the present invention is constructed to include identification signal detection means, a pair of identification means, and control signal supply means.

The identification signal detection means is configured to detect a television signal transmitted by superimposing a code signal for identifying the start and end of a commercial program in the first 1H of the video section where the vertical planking period has ended in the broadcast of the television program. After receiving all signals, separating the synchronization signal component from the television signal, and detecting the vertical synchronization pulse period,
This is for detecting the H eye.

The pair of identification means is for individually identifying the start and end of a commercial program based on the detected 1H code signal.

Control M] The signal supply means is for supplying information signals for individually identifying the start and end of a commercial program obtained from the pair of identification means to an external recorder as a control signal.

(Example) Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a commercial program detection and control device according to the present invention.

FIG. 2 is an explanatory diagram showing waveforms of each part of the block diagram shown in FIG. 1.

FIG. 3 is an explanatory diagram showing an example of a regular program/commercial program identification signal superimposed on the 22nd H of a television signal.

FIG. 4 is an explanatory diagram showing the waveform diagram of FIG. 3 over a long period of time.

In Figure 1, 1 is a synchronous separation circuit, 2 is an integration circuit, and 3 is a synchronous separation circuit.
is a vertical synchronization detector, 4 is a waveform shaping circuit, 5 is a 22H detection circuit, 6 is an extractor, F is a sampling pulse generator, 8
is a sampling circuit, 9 is a start information identifier, 10 is 22
11 and 13 are interface circuits, and 12 is an end information identifier.

In FIG. 1, the commercial television signal 1 on No. 11 d1101 is branched into two, one is sent to the synchronization separation circuit 1,
Only the synchronization signal is branched into two to obtain a waveform on the signal ll11102. When the waveform on the signal line 102 is integrated by the integrating circuit 2 connected to the next stage, an integrated waveform is obtained on the signal line 103. Since the pulse width of the vertical synchronization pulse is much larger than the width of other horizontal synchronization pulses and vertical equalization pulses, the voltage of only the vertical synchronization pulse portion is accumulated and sent to the threshold level 2 of the vertical synchronization detector 3 in the next stage. I started to exceed the
The detected waveform is obtained on the signal line 104.

Then the signal i%'i! The waveform on 104 is converted to waveform shaping circuit 4.
Then, the waveform is reshaped and a reshaped waveform on the signal line 105 is obtained. It is added to the 22H detection circuit S, and a 22H detection waveform with a pulse width α is obtained on the signal line 106 using the fall of the waveform on the signal line 105 as a trigger.

The pulse width of α is selected to correspond to approximately one video signal section (IT (-(horizontal synchronization signal width + front porch width, ten pack porch width)).

Next, connect 22T (one of the detection signals to 22T) on the signal line 106.
The commercial program identification signal is supplied to the H correction circuit 10 to clean the commercial program identification signal superimposed on the 22nd H, which is the first video signal section immediately after vertical planking synchronization ends. This 22
The H-th area is originally a portion on which a video signal is superimposed, but even if one of the 525 scanning lines is deleted (at the top of the screen), there is almost no visual effect. Furthermore, since this is the moment of switching between a regular program and a commercial program, there is no problem in terms of visual inertia.

Next, the 22H detection signal on signal line 106 is applied to extractor 6 to obtain a commercial program identification signal on signal line 109 from among the received television signals.

The sampling circuit 8 uses the sampling pulses supplied from the sampling pulse generator onto the signal line 108 and samples them to obtain a sampled waveform on the signal line 110. Details of these waveforms are shown in FIG.

In the example of FIG. 8, the commercial program identification signal superimposed on the 22nd H has a 6-bit (A-F) waveform, and here the 6-bit V-pel of A-F is 101101.

The sampling pulse on signal a10g is connected to signal line 106
This occurs only during period a using the rise of the 22H detection signal above as a trigger.

Next, the sampled waveform on the signal line 110 is applied to the commercial start information identifier 9 and the commercial end information identifier 12, and the respective bit information is detected.
Commercial start information is obtained on signal line 110, and commercial end/refresh information is obtained on signal line 113. Finally, all these interface circuits 11 and interface circuits 13 are passed through, and the signals are connected to the recording station via the channels 112 and 114 as the commercial number C and the number C commercial.

(Effects of the Invention) As explained above, the present invention has the following advantages:
Frame 7 Yaru program superimposed on 2H: Information signals indicating the start of the signal, 2 and the information signals indicating the end of the signal are detected, sent to the recorder, cured, and controlled during recording. This has the effect of skipping only the commercial Kagawa and allowing only the original broadcast program to be recorded continuously.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a 7-day broadcast program detection and control device according to the present invention. FIG. 2 is an explanatory diagram showing waveforms at various parts in FIG. 1. FIG. 3 is an explanatory diagram showing details when detecting commercial program identification information superimposed on the 22nd H. FIG. 4 is a long-term explanatory diagram of the waveforms shown in FIG. 2. 1...Synchronization separation circuit 2...Integrator circuit 3...Vertical synchronization detector 4...Waveform shaping circuit 5...22H detection circuit B...Extractor 700. Sampling pulse generator 8...-sampling circuit 9... Commercial start! v & discriminator 12...commercial end information discriminator 11.13.6.interface circuit 10...22H correction circuit

Claims (1)

[Claims] A synchronization signal is generated by receiving a television signal transmitted by superimposing a code signal that identifies the start and end of a commercial program in the first 1H of the video section where the vertical planking period has ended in the broadcast of a television program. an identification signal detection means for separating a component from the television signal, detecting a vertical synchronization pulse period, and then detecting the first 1H of the video section; a pair of identification means for individually identifying the start and end of a program; and an information signal for individually identifying the start and end of the commercial program obtained from the pair of identification means for external recording using as a control signal. What is claimed is: 1. A commercial program detection/control device, comprising control signal supply means for supplying control signals to a commercial program.