KR200140949Y1 - Video cassette recorder with a function to display the recorded informations - Google Patents

Abstract

The present invention relates to a VCR having a function of confirming recording information such as a title of a program, a recording time, and the like recorded on a tape on which a composite video signal is recorded. The tape recording information checking apparatus of the present invention inputs information about a program recorded in a vertical blanking section of a composite video signal input when recording composite video signals on a tape, which is a recording medium of a VCR, and stores them in a memory inside the VCR. To display during tape playback. Therefore, the present invention allows the user to insert and play a tape in the VCR and check the information of the recorded program on the tape at about the same time, and provides the effect of simplifying the playback of the desired program among the recorded programs.

Description

Video cassette recorder with tape recording information checking function

1 is a block diagram showing an apparatus for checking tape recording information according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: input terminal 11: synchronization signal separation unit

12 counter 13 selector

14: multiplexer 15: data generator

16: Encoder 17: Low Pass Filter

18: data detector 19: signal processor

20: memory control unit 21: memory

22: comparison unit 23: playback image processing unit

The present invention relates to a video system for recording and reproducing a composite video signal. In particular, data about a recorded content is inserted into a vertical blanking section of a video signal to be recorded and recorded on a tape, and at the same time a tape is played back. The present invention relates to a video cassette recorder (hereinafter referred to as a VCR) capable of confirming information about a recorded program.

Conventionally, the user repeats the verification process using the rewind key and the fast forward (FF) key to check information such as the contents of the tape and the recording time, or the VISS (Video Index Search System); The tape was checked from the beginning to the end using VISS). VISS is a method of recognizing the start point recorded by the user by recording the index signal on the control track of the tape when recording the composite video signal on the tape. When forwarding is performed using VISS, the tape stops at the tape position where the index signal is loaded. When playing from this point, the user can see from the desired recording start point. These conventional methods have the inconvenience of having to turn the tape from beginning to end in order to check the desired recording information.

Accordingly, an object of the present invention is to insert the data about the recorded content in the vertical blanking section of the composite video signal during recording and to record it on a tape, so that the tape can be detected and displayed when the tape is reproduced. It is to provide a VCR equipped with a tape recording information check function to easily check the recording information, such as the title of the program, the recording time.

A VCR having a tape recording information checking function according to the present invention for achieving the above object is a data generator for generating first data related to characteristics of a corresponding program recorded when a composite video signal is recorded on a tape. Means for adding the above-mentioned first data to the vertical blanking section of the composite video signal, a data detector for detecting second data carried on the input composite video signal and first data added to the recorded composite video signal, from a data generator Means for storing the generated first data and the second data, comparing the first data added to the recorded composite video signal with the data stored by the storage means, and outputting a video signal corresponding to the matching portion and outputting the same; And a reproducing image processing unit for reproducing to display the image signal received from the above-described comparing unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an apparatus for checking tape recording information according to an embodiment of the present invention. The data generator 15 generates data (hereinafter referred to as first data) such as a VCR set number, a tape number, a program number, and outputs the data to the encoder 16 and the signal processor 19. The sync signal separator 11 separates the horizontal and vertical sync signals from the synthesized spiritual signal input through the input terminal 10. The counter 12 receives the horizontal synchronization signal from the synchronization signal separator 11 and counts the horizontal synchronization signal. The selector 13 generates a selection control signal for controlling the above-described first data to be inserted into the vertical blanking section of the composite video signal. The encoder 16 receives the first data, converts it into a form insertable into the vertical blanking section of the composite video signal, and outputs the converted data to the multiplexer 14. A low pass filter (LPF) 17 is connected between the encoder 16 and the multiplexer 14 to adjust the data inserted in the vertical blanking section of the composite video signal into the luminance signal frequency band of the video signal. . The data detector 18 detects data (hereinafter, referred to as second data) of program title, recording time, and the like among digital data contained in the vertical blanking section of the composite video signal applied through the input terminal 10. The signal processor 19 converts the first data applied and the second data applied from the data detector 18 into a form that can be stored in the memory 21. The memory controller 20 is connected between the signal processor 19 and the memory 21.

On the other hand, during tape playback, the data detection unit 18 detects the first data carried in the composite video signal reproduced from the video tape and outputs it to the comparison unit 22. The comparison unit 22 compares the first data of the corresponding tape detected and applied by the data detection unit 18 with the data stored in the memory 21, and transmits information of a program having the same tape number to the reproduction image processing unit 23. Output The reproducing image processor 23 reproduces the information input from the comparator 22 and outputs the information to the monitor.

The operation of the tape recording information checking apparatus according to the present invention configured as described above will be described in detail.

When recording the composite video signal on the tape, the data generator 15 records the VCR set number, tape number, and program number for the tape to be recorded in response to a key operation signal SKey for a recording function applied by an external user. First data including information such as information is generated and output to the encoder 16 and the signal processor 19. In the case of a VCR, the above-mentioned first jitter may be generated by a microcomputer or the like. Here, the VCR set number is a unique number of the VCR used for tape recording to distinguish it from other VCRs used for tape recording. The tape number is assigned in the order of serial number for the first tape, and the assigned number is used for the previously numbered tape. Program numbers are assigned serial numbers in the order in which they were recorded on the tape. Meanwhile, the sync signal separator 11 separates the horizontal sync signal and the vertical sync signal from the composite video signal input through the input terminal 10. The horizontal synchronous signal is output to the counter 12, and the vertical synchronous signal is output to the counter 12 and the encoder 16. When the counter 12 counts an input horizontal synchronization signal and applies it to the selection unit, the selection unit 13 selects a line to which recording information is to be input among the vertical blanking sections of the composite video signal, and selects a position at which the data is to be inserted in the selected line. Generate a selection control signal to determine. The encoder 16 converts the first data applied from the data generator 15 into a form insertable into the vertical blanking section of the composite video signal and outputs the same to the low pass filter 17 together with the synchronization signal. The low pass filter 17 adjusts the output signal of the encoder 16 to be included in the luminance frequency band of the video signal. The output signal of the low pass filter 17 is applied to the multiplexer 14. When the first data is applied, the multiplexer 14 outputs the first data to be inserted into a predetermined region of the vertical blanking section of the composite video signal under the control of the selection control signal applied from the selection unit 13. In this case, when the first data carried in the vertical blanking section cannot be loaded in one line, the first data stored in the vertical blanking section is continuously stored in the corresponding line of the next frame. The data detector 18 separates the data contained in the vertical blanking section of the composite video signal applied through the input terminal 10, detects the second data from the separated data, and outputs the second data to the signal processor 19. The signal processor 19 converts the first data input from the data generator 15 and the second data received from the data detector 18 into a form capable of storing in the memory 21 the memory controller 20 of the memory controller 20. It stores in the memory 21 under control.

When reproducing the contents recorded on the tape, the data detection unit 18 detects the first data recorded in the vertical blanking section of the composite video signal read from the tape. The detected first data is applied to the comparator 22, and the composite video signal is applied to the playback image processor 23. The comparator 22 supplies the tape number of the tape to the memory controller 20 in response to the first data applied from the data detector 18. The memory controller 20 outputs the corresponding program information stored in the memory 21 to the comparator 22 using an address signal corresponding to the tape number applied from the comparator 22. That is, information of a program having the same tape number as the first data detected in the vertical blanking section of the synthesized video signal reproduced among the data stored in the memory is output. The reproduction image processing unit 23 processes the information of the program applied from the comparison unit 22 in a form that can be displayed on the monitor and outputs the information to the monitor in order of the programs. At this time, the user can check the recording information of the tape through the image displayed on the monitor.

In addition, in order to easily check the current position of the tape or to find a program to be viewed, when the composite video signal is recorded on the tape, the index of the corresponding program is inserted into the control track of the tape and the vertical blanking of the composite video signal is performed. The index of programs recorded in the section is inserted and stored in the memory 21. When the tape is played back, the apparatus of FIG. 1 determines the program number by using the information inserted in the vertical blanking section of the composite video signal and the information stored in the memory 21, indicating which program the current tape position is on. Do it. At this time, the user can find the starting point of the desired program by playing from the position where the index signal of the desired program is detected by using the VISS.

As described above, the apparatus for confirming the tape recording information according to the present invention can check the recording information of the program title, recording time, etc. at the same time as inserting and playing the tape in the VCR. It provides a simple effect.

Claims (3)

A device for recording a composite video signal on a recording medium and reproducing and displaying the recorded composite video signal, wherein the data generation generates first data related to characteristics of the corresponding recorded program when recording the composite video signal on a tape. part; Means for adding the first data to a vertical blanking section of an input composite video signal; A data detector for detecting second data loaded on the input composite image means and first data added to the recorded composite image signal; Means for storing the first data and the second data generated from the data generator; A comparator for comparing the first data added to the recorded composite video signal with the data stored by the storage means and outputting a video signal corresponding to the matching portion; And a reproducing image processing unit for reproducing to display the image signal received from the comparing unit. 2. The apparatus of claim 1, wherein the means for adding the first data comprises: a synchronization signal separator for separating the synchronization signal of the input composite video signal; A counter for receiving and counting the separated horizontal synchronization signal; A selection unit for selecting a line into which data is to be inserted among the vertical blanking sections and determining a position at which data is to be inserted in the selected line; An encoder for converting data provided by the data generator into a form insertable into a vertical blanking section; A low pass filter for adjusting the first data inserted in the vertical blanking section to be included in the luminance signal frequency band of the video signal; And a multiplexer which selects the input composite video signal and the first data inserted in the vertical blanking section and multiplexes the data into a single information signal. The apparatus of claim 1, wherein the means for storing comprises: a memory for storing the first data and the second data; A signal processor converting the first data and the second data to be stored in the memory; And a memory control unit for controlling the memory.