JPH06303564A - Video deck recording reservation control system using ntsc signal - Google Patents

Abstract

PURPOSE:To surely record a desired program by setting the G code information of a program desired to record at a G code information setting part, and recording a received TV signal when it coincides with the G code information signal of received broadcast. CONSTITUTION:The G code information 4a of the program desired to record is set at and inputted in advance to the recording control part 9 of a receiver 12 by the G code information setting part 10. A received wave is inputted to a video recording decoder 7, and the G code information is detected, and is separated from an NTSC signal 3, then, it is supplied to the control part 9 as a G code information reservation signal 4. The control part 9 analyzes the signal 4, and compares the signal 4a with the signal 4 when a time to start a program for which recording reservation is set arrives, and starts a recorder 11 when coincidence is obtained between them. Thereby, it is possible to surely record a reserved program even when the broadcast time of the reserved program is changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording reservation control system for a video deck, and more particularly to G code information added to a signal of NTSC system transmitted by a TV broadcasting station, and this G code information and preset G code information set in advance. The present invention relates to a recording reservation control method for starting recording when and match.

[0002]

2. Description of the Related Art Conventionally, a VCR recording reservation system uses a recording reservation program installed in a VCR to set a channel, a date, a time, etc. of a program to be recorded, and a G code. There was a method to set a recording reservation by typing on the VCR or the dedicated remote controller.

[0003]

However, in these methods, if there is an extension of a professional baseball night game relay or insertion of a special program before the program to be recorded, the broadcast time of the program to be recorded is changed, The desired program may not be recorded because the start time of the program reserved for recording is delayed.

It is an object of the present invention to solve the above problems and provide a system capable of surely recording a desired program.

[0005]

In order to solve the above-mentioned problems, in a video recording system, a broadcasting device 1 of a TV broadcasting station is used.
NT the G code information signal 4 before the power amplifier 2 in 3
The video recording control encoder 1 which is added to the SC signal 3 to form the composite signal 5 is provided, and the receiver 12 is provided with the video recording control decoder 7, the recording control unit 9 and the G code information setting unit 10 after the tuner 6. It is a thing.

The video recording control decoder 7 produces a composite signal 5
Is separated into an NTSC signal 3 and a G code information signal 4.

The recording control section 9 has an NTSC signal 3 and a G code information signal 4 output from the video recording control decoder 7.
And the setting G code information signal 4a set by the G code information setting unit 10 and recording reservation control for starting recording by the recording device 11 when the G code information signal 4 and the setting G code information signal 4a match. It is a method.

[0008]

When the G code information of the program desired to be recorded is set in the G code information setting section 10, the G code information signal 4 of the received broadcast is compared with the set G code information signal 4a, and when the two match, the image is recorded. N received by operating the device 11
Record the TSC signal 3.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram showing the main parts of a broadcasting device and a receiving device for implementing the method of the present invention. FIG.

FIG. 2 is a waveform diagram of a generally used vertical blanking period of an NTSC signal. 3H, 3H, 3
H and 11H indicate the time relationship within the vertical blanking period. In this case, the vertical blanking period included in the NTSC signal is used for the vertical deflection reset time in the TV and VCR, but any signal may exist in the portion other than this reset time. .

At present, this vertical blanking period is one of the correspondences to the character broadcasting and the clear vision which send various kinds of life information, and is used for the GCR signal or the like used for removing the ghost.

As shown in FIG. 2, the vertical blanking period of the NTSC signal has a front porch period h, a vertical synchronizing pulse period i, and a back porch period j. In the present invention, G code information is included in the vertical blanking period. It is added to the back porch period j.

As shown in FIG. 2, there are 18 horizontal sync pulses g in the back porch period j, and the portion to which G code information is actually added is the horizontal sync pulse in the back porch period j as shown in FIG. Display period k sandwiched between pulses g
Located in the part called.

In the broadcasting unit 13, NT which displays a TV image is displayed.
The SC signal 3 and the G code information signal 4 are input to the video recording control encoder 1. As shown in FIG. 3, the G code adding device in the video recording control encoder 1
The composite signal 5 in which the code information is added to the NTSC signal 3 within the display period k is input to the power amplification unit 2 and broadcast.

In the receiver 12, the tuner 6 inputs the received radio wave as a composite signal 5 to the video recording control decoder 7. Inside the video recording control decoder 7, FIG.
The G code information included in the back porch period j after the vertical synchronizing pulse period i shown in (1) is detected, separated from the NTSC signal 3, and output as the G code information signal 4.

The detected G code information signal 4 is input to the recording controller 9. Further, the separated NTSC signal 3 is displayed as an image on the image display unit 8 and is also input to the recording control unit 9.

On the other hand, the G code information of the program desired to be recorded is set in the recording control section 9 by the G code information setting section 10 and is inputted in advance as the G code information signal 4a.

When actually recording using the G code,
The received G code information signal 4 is analyzed, and when the start time of the program reserved for recording comes, the received G code information signal 4 is compared with the set G code information signal 4a set for recording reservation in advance. Then, if they match, the recording device 1
Start 1.

As a result of this comparison, the G code information signal 4
And the set G code information signal 4a are different, the recording device 11 is not started until they match.

That is, when the program set with G code information starts, the G code information is added to the NTSC signal 3 by the video recording control encoder 1 shown in FIG. Composite signal 5 including 4
, The receiver 12 side can accurately detect the start time of the reserved program and never miss the reserved program.

Further, by using this method, it is possible to cut the commercial broadcast portion during recording by adding a video recording control command in addition to the G code information.

[0022]

As described above, when the recording reservation is made by the G code information, even if the broadcast time of the reserved program is changed, the reserved program can be accurately and reliably recorded without failing to be recorded. You can do it.

It is also possible to detect the commercial broadcast time during recording and record without the commercial.

[Brief description of drawings]

FIG. 1 is a main part configuration diagram of a broadcaster and a receiver that implement the method of the present invention.

FIG. 2 is a waveform diagram of a generally used vertical blanking period of an NTSC signal.

FIG. 3 is a waveform diagram of a signal in which G code information in a back porch period is inserted.

[Explanation of symbols]

 1 Video recording control encoder 2 Power amplification unit 3 NTSC signal 4 G code information signal 4a Setting G code information signal 5 Composite signal 6 Tuner 7 Video recording control decoder 8 Video display unit 9 Recording control unit 10 G code information setting unit 11 Recording device 12 receiver 13 broadcaster

Claims (1)

[Claims] 1. In a video recording system, a G code information signal is sent to the NT in front of a power amplification unit in a broadcasting station of a TV broadcasting station.
A video recording control encoder that adds a composite signal to the SC signal is provided, and a receiver is provided with a video recording control decoder, a recording control unit and a G code information setting unit after the tuner. The signal is separated into the NTSC signal and the G code information signal, and the recording control unit outputs the NTSC signal and G code information signal output from the video recording control decoder and the set G code information set by the G code information setting unit. A video deck recording reservation control method using an NTSC signal, characterized in that the recording device is set to a recording state when the G code information signal and the set G code information signal match.