KR0164567B1 - Reproducing selection method - Google Patents

Abstract

The present invention relates to a tape reproducing method of a video tape recorder for selectively reproducing a program recorded on magnetic tape, and more particularly, to a reproducing selection method for selectively reproducing a portion to be reproduced by selecting a program recorded on the tape. By

When an index memo key is input during tape insertion, the camera searches for a high-speed search from the beginning of the tape. When the index mark is detected, it performs the index playback process for a certain time. When the index playback process is performed, press the memory key at the desired part. An index storing process for storing a playing program is performed, and a desired playing process for selectively playing only a program stored in an index storing process when a play key is input is performed to easily select and play only a desired program.

Description

How to choose playback

1 is an implementation circuit diagram of the present invention.

2 is an INDEX selection flowchart of the present invention.

3 is a tape reproduction flowchart of the present invention.

* Explanation of symbols for main parts of the drawings

1 transmitter 3 key matrix unit

4: micom 5: tuner

9: amplifier 12: chroma IC

13: R.G.B matrix 20: mechanism control unit

The present invention relates to a tape reproducing method of a video tape recorder for selectively reproducing a program recorded on magnetic tape, and more particularly, to a reproducing selection method for selectively reproducing a portion to be reproduced by selecting a program recorded on the tape. will be.

In many cases, only one program is recorded on the magnetic tape reproduced by a video tape recorder.

When several programs are recorded on one tape, there are some programs that a user wants to watch and some programs that the user does not want to watch.

Therefore, when playing only a program that you want to watch on a tape in which several programs are recorded, it is cumbersome to use a play key and fast forward (FF) and rewind (REW) keys to find a program that you want to watch.

In view of the above, in the present invention, when several programs are recorded on a single tape, the user can play the selected program during playback by shortly playing the beginning of each program to select a desired program and then playing the selected program. It is intended to provide a playback selection method that makes it possible to easily play only the desired program. When an index memo key is inserted when a tape is inserted, the index playback process is performed at a high speed from the beginning of the tape and for a certain time whenever an index mark is detected. And the index storage process of storing the program by pressing the memory key at the portion to be played during the index playback process, and by the selective playback process of selectively playing only the program stored in the index storage process when the playback key is input. .

Hereinafter, exemplary embodiments of a regeneration selection method of the present invention will be described with reference to the accompanying drawings.

1 is an implementation circuit diagram of the present invention.

Internal circuit diagram of VCR.

The microcomputer 4 is built in the VCR to control all functions. The microcomputer 4 of the present invention schedules the beginning of each program when a plurality of programs are recorded on one tape in addition to the functions provided by the existing VCR. After selecting a program to be watched by playing time, the function of playing back only the selected program is performed.

The microcomputer 4 recognizes the key scan signal of the key matrix unit 3 or the remote control signal input selected by the transmitter 1 and decoded by the remote control module 2 to control the internal operation by the built-in program.

The mechanism controller 20 drives the mechanism of the VCR according to the control command of the microcomputer 4 to perform operations such as reproduction, REW, and FF.

In addition, the microcomputer 4 tunes the channel data selected by the user to the channel selected by the tuner 5 and the intermediate frequency signal of the specific channel tuned by the tuner 5 is applied to the IF IC 6 so as to output a video signal and an audio signal. Is processed into a signal.

The audio signal processed by the IF IC 6 is applied to the voice multiple control unit 7 and processed into a stereo or bilingual audio signal by controlling the stereo or bilingual broadcasting signal applied from the microcomputer 4. Tone of the voice signal is controlled by the tone control unit 8 and applied to the amplifier 9, and the amplifier 9 amplifies the tone-controlled voice signal to the left and right speakers 10 and 11. Output it.

This voice signal processing is the same as the voice signal processing of the existing VCR.

On the other hand, the video signal processed by the IF IC (6) is applied to the chroma IC (12) and processed into RGB video signals, and then applied to the RGB matrix (13) and output from the microcomputer (OSD) (On Screen Display) After combining with the signal, it is displayed on the CRT 15 via the RGB drive 14.

As described above, the technology for superimposing and displaying the OSD signal output from the microcomputer 4 on the output of the video signal and the video signal is the same as the existing video signal processing technology, but in the present invention, the internal program of the microcomputer 4 is changed to change the internal program. To achieve the purpose of.

The operation of the microcomputer 4 of the present invention will be described in detail. 2 is an index selection flowchart of the present invention.

The microcomputer 4 of the VCR first checks whether an index memo key is input while the tape is mounted (S1).

The index memo key is installed in the key matrix 3 or the transmitter 1 and is used to select and play back a memory program.

If the index memo key is not input, the process returns to the step of checking the key input. If the index memo key is input, it is checked whether the tape is in the initial state (initial beginning) (S2).

If the index memo key is not the beginning of the tape, after winding the tape to the first part at high speed (S3),

Search is performed from the beginning of the tape to check whether an index mark is detected (S4).

Here, the index mark refers to recording by changing the duty ratio of the control pulse recorded on the tape. When the duty ratio of the normal control pulse is 6: 4, the index mark is recorded as 4: 6 and for a predetermined time from the beginning of the program. Only index marks are written.

Therefore, the index mark is detected using the control pulse detected by the control head. If the index mark is not detected, the tape is wound in the forward direction.

If the end of the tape is detected (S6), the tape is continuously rotated in the forward direction if it is not the end of the tape to check whether an index mark exists.

If the index mark is not detected until the end of the tape is detected (S7), the display shows no index mark for a predetermined time (about 2 seconds) and then returns to the initial state.

However, if the index mark is detected in step S4, the index number is increased by 1 (S9), and the timer is cleared (S10) until the predetermined time (about 5 seconds) set as the timer has elapsed (S11).

That is, each time the index mark is detected, the playback operation is performed for about 5 seconds, and when the storage key is played back, it is checked whether the storage key is input (S13). When the storage key is input, the index number at that time is stored in the memory. (S14)

When the index memo key is input as described above, the index mark is searched from the initial state of the tape to detect the index mark. When the index mark is detected, the playback operation is performed for 5 seconds. When the memory key is input during the playback operation, the index number is memorized.

At this time, the program which pressed the memory key selects viewing at the time of playback, so that only the index number stored at the time of playback can be selected and viewed.

3 is a tape reproduction flowchart of the present invention.

After storing the index number of a specific program as shown in the flowchart shown in FIG. 2, it is checked whether a play key is input (S21). If a play key is not input, it is returned to its original state. (S22)

If not in index mode, the tape is played back in normal playback mode (S25). In index mode, it is checked if there is an index number (S23). If there is no index number, the message with index number is displayed for 2 seconds (S24). Play back the tape and check if there is an index number stored if there is an index number (S26).

If there is a stored index number, the program is reproduced at that time (S27) and searched again to check whether there is a new index number (S28).

When the program corresponding to one index number is finished, the tape is rolled forward again (S29) and it is checked whether the end of the tape is detected (S30).

If the end of the tape is not detected, the process returns to step S26 to perform the above-described process again. If the end of the tape is detected, the index mode is released (S31), and the state is returned to the original state.

This selective regeneration is performed when the index mode key is input to the regeneration bacterium. If the regeneration key is pressed without inputting the index mode key, the regeneration is sequentially performed in the same manner as the existing regeneration function.

The index number stored in this way is cleared when the tape is extracted. After inserting the tape again, the index number should be stored with the memory key.

As described above, the present invention has an effect of selectively reproducing only a desired program when several programs are stored on one tape.

Claims (4)

When an index memo key is inserted during tape insertion, the search is started at high speed from the beginning of the tape. When the index mark is detected, the index play process is performed for a certain time. When the index play process is performed, press the memory key at the desired part. An index selection process for storing a playback program and performing a selective playback process for selectively playing only a program stored in an index storage process when a playback key is input. The method of claim 1, wherein the index reproducing process comprises rewinding the tape to the beginning of the tape and then performing a quick search to detect the index mark, and displaying the index mark no message for a predetermined time if the index mark is not detected. Playback selection method is made, including. The playback selection method according to claim 1, wherein the index storing step comprises a step of storing a corresponding index number by looking at a playback screen which is played back for a predetermined time when an index mark is detected and pressing a storage key when the program is desired to be played back. The method of claim 1, wherein the selective reproducing process comprises: checking a stored index number if an index mode is selected at the time of playing, displaying a no program selected message and performing a normal reproducing operation if there is no stored index number; If the index number is found, searching for the index mark by a high-speed search operation to play the program, and quickly searching for the next index mark.