KR19990050613A - How to set record prohibited area when recording broadcasting program - Google Patents

Abstract

The present invention stores the input video and sound information in the audio track and the video track of the video tape seated on the deck through the Y / C processing unit 80 and the sound processing unit 90, and stored in the audio track and the video track In particular, the recording method of the recording apparatus having a CTL processing unit 70 for storing information relating to the state or format of the data to be stored in the control track of the video tape according to the input information according to the input information, After defining the CTL pulse string as the recording data erasure prevention data and setting a specific key signal among the key signals generated by the user as the erasure prevention request key signal, if it is determined that the set key signal is generated during the recording function, the defined CTL pulse string is defined as the video. Provides a method to set the record prohibited area when recording a broadcast program to be stored on the tape's control track. By doing so, the user's inconvenience in removing the recording prevention tab and the effect of obtaining partial erasing prevention and low cost without using an expensive recording prevention video tape can be obtained.

Description

Definition method of non recording part in recording a broadcast program

The present invention relates to a TVCR integrating a television receiver (hereinafter referred to as a TV) and a video cassette recorder (hereinafter referred to as a VCR). In particular, a region in which later recording is prohibited by using a CTL pulse on a recorded video tape when recording a broadcast program is set. The present invention relates to a recording prohibition area setting method for recording a broadcast program to prevent the stored program from being deleted.

In general, an image recording / reproducing apparatus (hereinafter referred to as a VCR) is a device for recording a video signal and an audio signal on a magnetizable video tape and reproducing it when necessary to view it through a display means such as a CRT or a TV. The phosphorus configuration is as shown in FIG.

The conventional VCR shown in FIG. 1 includes a microcomputer 600 which generally controls the operation of the VCR by manipulation of the keypad 900C or the remote controller 900B, and stores data to be processed by the microcomputer 600. The tuner 100 receives a broadcast signal of a channel selected by the tuner voltage output from the microcomputer 600, the tuner 100 from the antenna ANT, and the broadcast signal received from the tuner 100. IF detector 200 for detecting a frequency, and a video tape (cassette) that is operated in accordance with the operation control signal output from the microcomputer 600, the video detector (cassette) seated in the video technology through the head (H) A recording unit 300 for recording a signal output from the 200 and an operation control signal output from the microcomputer 600 (generally recoil with respect to the recording unit 300), and the video mounted on the video tech Tape (cassette) OSD for outputting a corresponding character image to receive the output information through the playback unit 400 to access the recorded signal through the head (H) and output the character information output from the microcomputer 600 It is largely composed of a generator 700, a signal processor 800 for processing the signal output from the playback unit 400 and the jitter output from the OSD generator 700 to pass to the TV or CRT side. .

Looking briefly at the operation of the conventional VCR configured as described above, when the user wants to record, the microcomputer 600 receives the corresponding broadcast program from the selected channel selected by the user and is then mounted on the current video tech through the recording unit 300. Record on video tape.

Subsequently, the broadcast program recorded on the video tape seated on the video tech is accessed through the playback unit 400 and then sphered into a video signal through the signal processing unit 800 and then transferred to the TV side or the CRT side provided therein. It is done.

At this time, if another broadcasting program is recorded at the location where the broadcasting program is recorded through the recording unit 300 at the request of the user, the previously recorded program is erased and the new program is stored thereon. Therefore, the user can erase unnecessary old programs and record a new program thereon, thereby preventing waste of video tapes.

However, there may be a program in which the user wants to keep it for a long time. In this case, most users should remove the recording protection tab provided on the exterior of the video tape cassette or use an expensive recording protection video tape. do.

The method of removing the recording protection tab among the conventional recording protection methods described above has a considerable difficulty in erasing a recorded broadcast program later. On the other hand, in the case of using a video tape for preventing recording, it is difficult to re-record at the source. It is true.

Therefore, the conventional anti-recording scheme as described above causes a problem that a user may bring considerable inconvenience and economic loss.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to store a recording prevention signal for a specific program in a recording state by using a CTL pulse on a recording video tape when recording a broadcast program. The present invention provides a method of setting a recording prohibition area during recording of a broadcast program, which can prevent the data from being erased.

1 is a block diagram schematically showing a configuration of a general VCR

2 is an exemplary TV simplified configuration to which the recording prohibition area setting method is applied when recording a broadcast program according to the present invention.

3 is an exemplary diagram of information storage track of a general video tape;

4 is an exemplary diagram of a CTL pulse for recording information on a control track;

5 is a flowchart illustrating an operation of setting a recording prohibition area when recording a broadcast program according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: tuner 20: micom

30: IF detector 40: Chroma

50: CRT drive unit 60: amplification unit

70: CTL processing unit 80: Y / C processing unit

90: sound processing unit 600: deck unit

SP: Speaker ANT: Antenna

A feature of the present invention for achieving the above object is to store the input image and sound information in the audio track and video track of the video tape that is seated on the deck through the Y / C processing unit 80 and the sound processing unit 90 And a CTL processing unit (70) for storing information related to the state or format of data stored in the audio track and the video track in a control track of a video tape with a CTL pulse corresponding thereto according to the input information. A recording method according to claim 1, comprising: a first step of defining a specific CTL pulse string as recording data erasure prevention data; a second step of setting a specific key signal among key signals generated by a user as an erasure prevention request key signal; A third step of determining whether the key signal set in step 2 is generated during the performance of the recording function, and the second step in the third step When it is determined that a key signal generator having a fourth process of storing the CTL pulse train been defined in the first step in the control track of the video tape.

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

2 is a simplified configuration example of a TVCR to which a method of setting a recording prohibition area when recording a broadcast program according to the present invention is applied. The microcomputer 20 generally controls the operation of the TV system, and the microcomputer 20 in the microcomputer 20. A tuner 10 which receives a broadcast signal of a channel selected by the selected tuning voltage from the antenna ANT, and detects an intermediate frequency from the broadcast signal received by the tuner 10 to output a composite video signal CVBS. An IF detector 30, a chroma IC 40 for receiving a composite video signal output from the IF detector 30, separating the video and audio signals, and outputting the separated video and audio signals; Amplification unit 60 for receiving and amplifying the audio signal output from the chroma IC 40 to provide to the speaker (SP), and for receiving the image signal processed and output from the chroma IC 40 for display on the CRT With CRT driving part 50 And a deck unit 600 for recording and storing information input under the control of the microcomputer 20 on a video tape seated thereon, and receiving a video signal output from the chroma IC 40 and recording the video signal. Y / C processing unit 80 to process the luminance and color signals so that it can be, and a sound processing unit 90 for receiving the audio signal output from the chroma IC (40) to process the signal to be recorded on the video tape and output And a CTL processing unit 70 for changing the information on the recording prohibition area set to a specific code under the control of the microcomputer 20 to the CTL pulse and transferring the information to the deck unit 600.

Referring to Figure 3 attached to the preferred operation of the TV according to the present invention configured as described above are as follows.

First, in the VHS VCR, the head is configured to be inclined at a predetermined angle. As shown in FIG. 3, one field of video is recorded on one video track while rotating along the inclination angle of the inclined head. The data is saved.

At this time, the control track stores various control information-information on the recording speed-in the form of CTL pulses, wherein the CTL pulses have the same period as shown in FIG. Based on time, logical highs and lows are distinguished. 4 illustrates a case in which logic high and low are classified according to whether the ratio of the duration of the low state to the duration of the high state is 1: 2 or 2: 1. .

Therefore, it is possible to use this CTL pulse to encode and store specific data, and to access it to use it as a reference material when playing videotape. Therefore, the recording prohibition area according to CTL pulse is set by the data format as shown in Table 1 below. Save the data.

Sync Command Value

1 byte 2 bytes 1 byte

As shown in Table 1, it is assumed that sync data of one byte of the illustrated data format is stored in the form of FF, that is, '11111111' as a reference for accessing data on the microprocessor side during later playback.

Hereinafter, referring to FIG. 5 attached to the process of storing the recording prohibition zone setting according to the data format as shown in Table 1 through the CTL processing unit 70 in FIG. same.

5 is a flowchart illustrating a recording prohibition area setting process when recording a program according to the present invention.

In step S101, the microcomputer 20 determines whether to perform a control operation according to recording at the user's request. If it is determined that the recording operation should be performed, the microcomputer 20 proceeds to step S102.

In step S102, the microcomputer 20 stores the data processed by the Y / C processing unit 80 and the sound processing unit 90 in the video track and the audio track of the video tape seated on the deck unit 600. Simultaneously with the process of step S102, the microcomputer 20 determines whether a request for preventing erasure of recording data is input by the user through the process of step S103.

If it is determined in step S103 that the request for erasing the recorded data is not input, the process proceeds to step S102 to perform the above-described normal recording function. At this time, the CTL pulses stored in the control track have normal control information.

If it is determined in step S103 that a request for erasing data being recorded by the user has been input, the process proceeds to step S104 to operate the CTL processing unit 70. In this case, the CTL processing unit 70 shows in Table 1 above. The CTL pulses are stored in the control track in the same format as they are.

Thereafter, the recording process continues in step S105, and in step S106 it is determined whether the user has released the anti-recording request confirmed in step S103. If the anti-recording request is released, the process proceeds to step S102. If the anti-oxidation request is continued, the process proceeds to the step S104 and the above-described process is repeatedly performed.

At this time, the flow of the end of recording is not shown in the accompanying FIG. 5, but the search for the end of recording is performed at each step. .

When providing a method of setting a recording prohibition area when recording a broadcast program according to the present invention operating as described above, the user's inconvenience in removing the recording prevention tab and partial erasure prevention without using an expensive recording prevention video tape. It is effective to get low expenses.

Claims (1)

The input image and sound information are stored in the audio track and the video track of the video tape seated on the deck through the Y / C processing unit 80 and the sound processing unit 90, and the data stored in the audio track and the video track are stored. A recording method in a recording apparatus comprising a CTL processing unit 70 for storing information relating to a state or a format in a control track of a video tape with a CTL pulse corresponding thereto according to input information. A first step of defining a specific CTL pulse string as data for preventing erasure of recorded data; A second step of setting a specific key signal among key signals generated by a user as an erasure prevention request key signal; A third step of determining whether a key signal set in the second step is generated while performing a recording function; And And a fourth step of storing the CTL pulse string defined in the first step in the control track of the video tape when it is determined that the key signal set in the second step is generated in the third step. How to set the record prohibited area.