KR19990019487U - Residual time insertion circuit of TV broadcasting - Google Patents

Abstract

The present invention relates to a residual time insertion circuit of a TV broadcast. In the related art, various program data for a reserved recording are transmitted to a TV broadcast signal in a vertical blanking section of a television signal, and a simple reservation recording using the broadcast signal is possible. There was an inconvenience caused by not using the remaining time for the program.

The present invention is a video processor 11 for generating and processing a video signal in the TV broadcasting system and the composite synchronization signal (CS) provided from the video processor 11 to receive the conventional problem in the vertical synchronization section The microcomputer 12 which controls the time data to be loaded, the level adjusting unit 13 which receives the time data signal of the micro computer 13 and adjusts it to an appropriate magnitude, and the video signal VS of the video processor 11. And an output switching switch unit 14 for selectively connecting the output of the level adjusting unit 13 to the rear end under the control of the microcomputer 13.

According to this, the program remaining time contained in the broadcast signal can be received and applied to various control operations.

Description

Residual time insertion circuit of TV broadcasting

The present invention relates to a remaining time insertion circuit of a TV broadcast, and in particular, the remaining time data of a broadcast program can be loaded on such a TV broadcast to easily realize various control operations such as reservation recording in a device such as a VSI system. I did it.

G-Code is known to implement simple reservation recording using broadcast signal in VSI system. This is a simple reservation recording system developed by GEMSTAR of USA, which makes reservation recording convenient. In order to do this, a specific number is assigned to a specific pro so that the user can enter the number of scheduled recordings.

Such a code can be reserved by inputting a code that codes up to 8 digits of 4 data of channel, date, start time, and broadcasting length (C, D, T, L). After entering the code, select 'Weekly / Once / Monday-Friday' and leave the remote control next to VSIal. When the scheduled time comes, IR will transmit the infrared and the VSI will start recording. It is compatible with each company's VSI, and there are VSI and TV with this function.

The PLUS CODE system is designed to summarize these four elements into separate numbers called plus codes, which are based on the region in which they are used: G-Code, VCR PLUS, SHOW VIEW. ), Called KPS.

On the other hand, as shown in FIG. 2, the CODE code carries and broadcasts a code signal divided into a clock and a W byte byte synchronization unit, a data head unit, and a data unit in a vertical synchronization section of the video signal.

In addition, there are four elements required to record a specific TV broadcast: date, channel, start time, and broadcast length. If you set the date as 31 days, 125 channel types, and the start time interval in 5 minutes a day, 288 (60/5 = 12, 12 * 24 = 288), and the length of the broadcast is 3 hours up to 5 minutes. There are 56 different intervals (5 minutes up to 3 hours, 15 minutes up to 3-8 hours). Thus, the total number of recordable cases is 31 × 125 × 288 × 56 = 62,496,000.

On the other hand, VSI system related to such KB PS code method is shown as shown in FIG.

Here, the microcomputer 31 for controlling the VSI system, the servo circuit 32 for driving control of the motor on the system deck side, the remote control unit 33a and the set side wirelessly connected to the remote control transmitter 33c The timer circuit 33 to which the key part 33b is connected, the audio circuit 35 which processes a voice signal in a system, etc. are provided.

In addition, the system includes a video circuit 37 for providing a recording signal to the tape side or processing a reproduction video signal from an RF signal provided from the tuner and the IF unit 38, and an audio signal during double speed reproduction on the system deck side. DMS (36) to control to provide a steady state, the KPS (34) to decode the KPS data, the tuner to tune the signal received from the antenna and generate a signal of intermediate frequency And an I F unit 38, a power circuit 39 for supplying a system power supply, and the like.

In addition, the conventional system of the reservation recording method using KBP data in such a system is introduced in Korean Patent Laid-Open Publication No. 1305 (Publication No. 94-16194).

In this case, when the user sees the program identifier displayed on the newspaper and inputs the reserved recording data, the system checks whether the reserved recording is set as shown in FIG. 3 and checks whether the scheduled recording is being executed if the reserved recording is set. After that, the identification code is extracted, and the reservation method is performed based on the start time, length, title, etc. of the program provided by the KBP signal data.

However, in such a conventional system, data such as the start time, length, and title of a program are carried in a broadcast signal, but the remaining time data of the program is not handled, which limits the various control operations of such a system.

An object of the present invention is to enable the user to perform the remaining amount of the broadcast program or a more simple reservation recording function by allowing the broadcast system to send the remaining time data to the broadcast signal to improve the above problems.

The present invention provides a video processor for generating and processing a video signal in a television broadcasting system and a composite synchronization signal (CS) provided from the video processor to control the time data in a vertical synchronization section so as to achieve the object of the above example. A microcomputer, a level adjuster that receives the time data signal of the microcomputer and adjusts it to an appropriate magnitude, and an output for selectively connecting the output of the video signal VS and the level adjuster of the video processor to the rear end under the control of the microcomputer; Residual time insertion circuit of the TV broadcast comprising a switch switch unit and the like.

Hereinafter, more specific features of the present invention will be understood by describing the same in detail with the accompanying drawings.

1 is a system circuit block diagram of a VCR (Video Cassette Recorder) having a general KBPS reception function.

2 is a reference diagram showing a conventional broadcast station side KB PS transmission signal shape

3 is a reference diagram showing a conventional method of performing a recording operation from a program identifier such as a KPS code in FIG.

4 is a system circuit block diagram according to the present invention

5 is a reference diagram for explaining the operation of the present invention

** Explanation of symbols on main parts of the drawing **

11. Video processor 12. Microcomputer

13. Level adjuster 14. Output telephone switch

The remaining time insertion circuit of the TV broadcast according to the present invention is shown as a circuit block as shown in FIG.

Here, a video processor 11 generating and processing a video signal in a TV broadcasting system, and a microcomputer 12 receiving a composite synchronization signal CS provided from the video processor 11 and controlling time data in a vertical synchronization section. And a level adjuster 13 that receives the time data signal of the microcomputer 13 and adjusts it to an appropriate magnitude, and outputs the video signal VS and the level adjuster 13 of the video processor 11 to the microcomputer. And an output changeover switch 14 for selectively connecting to the rear end under the control of the computer 13.

According to the present invention having the above configuration, when the video input signal VI generated from the broadcast camera signal is input to the video processor 11, the video processor 11 processes the video input signal and sends the video input signal to the output conversion switch unit 14.

In addition, when the composite synchronization signal output from the video processor 11 is input to the microcomputer 12, the microcomputer 12 detects a vertical blanking section of the composite synchronization signal and counts the current time. Is adjusted to an appropriate level in the level adjusting section 13 and then provided to the output switching switch section 14.

When the total time for the predetermined program of the microcomputer 12 is 55 minutes as shown in FIG. 5, the output conversion switch unit 14 performs a counting operation up / down from the total time to the level adjusting unit 13. Time data is sent, and the output changeover switch unit 14 shows that the microcomputer 12 has a total time of 55 minutes / remaining time 55 seconds per field in the vertical blanking section 55 minutes / remaining time 54 seconds. Minutes / remaining time 53 seconds → total time 55 minutes / remaining time 52 seconds → total time 55 minutes / remaining time 51 seconds → total time 55 minutes / remaining time 50 seconds → ......... → total time 55 Minutes / Time remaining Controls to display data as 00 minutes.

In addition, in the above, the remaining time is taken as an example of down data, but it can be configured as data that is up from 00 minutes to the total time.

Therefore, the video output signal VO passing through the output changeover switch 14 transmits the broadcast signal carrying the remaining time data as described above to the transmission system circuit.

The present invention is such that the remaining time data that can be used in the VSI system or TV set together with the KBPS data, etc., the user such as VSI to automatically turn off the system or control the scheduled recording operation, etc. It will be able to perform various control operations.

Claims (1)

A video processor 11 generating and processing a video signal in a TV broadcasting system, and a microcomputer 12 receiving a composite synchronization signal CS provided from the video processor 11 and controlling time data to be carried in a vertical synchronization section. And a level adjusting unit 13 which receives the time data signal of the micro computer 13 and adjusts it to an appropriate magnitude, and outputs the video signal VS and the level adjusting unit 13 of the video processor 11. Residual time insertion circuit of TV broadcasting, characterized in that it comprises a configuration including an output switching switch unit 14 and the like selectively connected to the rear end under the control of (13).