KR19980023448A - Recording / Playback Device and Method of Video Cassette Recorder - Google Patents

Abstract

The present invention relates to a recording / playback apparatus and method for a video cassette recorder, and to a recording / playback apparatus for a conventional video cassette recorder, detecting whether a pilot signal is detected in a broadcast signal of a predetermined channel provided from a tuner unit (40). A pilot signal detection unit 50 for discriminating and generating a discrimination signal and a discrimination signal indicating that a pilot signal was not detected from the pilot signal detection unit 50 when a recording function is executed are recognized as commercials. A recognition signal generator 60 for providing a recognition signal to the signal processor 70 so as to be mixed with a broadcast signal by the signal processor 70, and searching for a playback signal output from the deck unit 80 during playback. When the recognition signal is detected, the detection signal corresponding thereto is provided to the microcomputer 20 so that the microcomputer 20 generates a control signal to the deck unit 80 to detect the recognition signal. It further comprises and constitutes a playback signal search unit 90 for running the cassette tape at a predetermined high speed.

Accordingly, the present invention can record the commercial recognition signal during the commercial broadcast while recording the program, and recognize it during playback to rapidly advance the cassette tape for the commercial section, thereby reducing the time loss caused by the commercial and the user's discomfort. It has an effect.

Description

Apparatus and method for recording / playback of video cassette recorder

The present invention relates to an apparatus and method for recording / reproducing a video cassette recorder (hereinafter abbreviated as V. C. Al.), In particular, a recognition signal according to the corresponding section for broadcasting an advertisement when recording a broadcast signal. Is recorded with a broadcast signal, and during playback, a recognition signal recorded at the time of recording is detected, and the recording / reproducing apparatus of the V.C.R. It is about.

In general, V.C.R is widely used to record and play back desired programs of broadcast signals. Meanwhile, not only a signal of a desired program is transmitted to the broadcast signal, but a predetermined commercial broadcast is transmitted at a portion where each program starts and ends.

Therefore, if the user does not pay attention when recording in V.C.R, conventionally, such a commercial signal is recorded together with the broadcast signal of the desired program. In addition to the signal of the program to the commercial signal is recorded in almost all cases there is a problem that can cause time loss and discomfort to the user during playback.

Therefore, the present invention has been proposed to solve such problems in the related art, and an object of the present invention is to detect an advertising section when recording in V.C.R. The present invention provides a method of recording / reproducing V.C.R so as to detect a recognition signal recorded in a section and rapidly advance a cassette tape for the section to reduce time loss and discomfort of the user due to a commercial signal.

According to a preferred embodiment of the present invention for achieving this object, a key input unit for providing a key signal for executing the recording and playback function, and each control signal according to the recording and playback key signal provided from the key input unit And a tuner unit for tuning a broadcast signal of a predetermined channel among the broadcast signals received from the antenna under the control of the microcomputer, a antenna for receiving a broadcast signal, and a broadcast signal tuned and provided by the tuner unit. A signal processing unit for processing to be recordable, and for displaying a playback signal input during playback; and recording video and audio signals provided from the signal processing unit on a cassette tape under the control of the microcomputer when the recording function is executed, and during playback. The signal processing is a signal to be reproduced under the control of the microcomputer A recording / reproducing apparatus of a video cassette recorder, comprising: a deck unit for providing a video signal; and a screen for displaying an output signal of the signal processing unit during reproduction, when the audio signal included in the broadcast signal is stereo or audio multiplexing. The pilot signal is added to the broadcast signal and transmitted, and a predetermined channel provided from the tuner unit detects the pilot signal from the broadcast signal to determine the presence or absence of the pilot signal, and accordingly the pilot signal presence determination signal. A pilot signal detector for outputting; A recognition signal generator for generating a predetermined recognition signal to the signal processor when a determination signal indicating that the pilot signal is not detected is provided from the pilot signal detector when a recording function is executed; The signal processing is performed by mixing and processing the recognition signal provided from the recognition signal generator and the broadcast signal provided from the tuner when the recording function is executed, provided to the deck unit to be recorded in the deck unit, During playback, the playback signal output from the deck unit is searched for and the detection signal is detected. The detection signal is provided to the microcomputer, thereby generating a control signal to the deck unit. It characterized in that it further comprises a playback signal probe for driving the cassette tape at high speed.

According to another preferred embodiment of the present invention for achieving the above object, in the recording method of the video cassette recorder, (a) starting recording when a recording key signal for recording a desired broadcast program is input; (B) detecting the presence or absence of a pilot signal in the broadcast signal of the desired program and determining whether it is being broadcasted. (C) if the pilot signal is not detected in step (b), it is recognized as being broadcasted and accordingly Recording the recognition signal together with the broadcast signal; and (d) determining whether or not the recording end key signal is input and terminating the recording if it is input.

According to another preferred embodiment of the present invention for achieving the above object, in the playback method of a video cassette recorder, (a) starting playback when a playback key signal is input, (b) step (a) Determining whether a commercial recognition signal is detected in the playback signal when the playback is started in the step of advancing the cassette tape at a predetermined high speed during the period in which the commercial recognition signal is detected; Determining whether the image is to be input, and stopping the reproduction if it is input.

1 is a block diagram of a recording / playback apparatus of a video cassette recorder according to an embodiment of the present invention;

2 is a flowchart of a recording method of a video cassette recorder according to another preferred embodiment of the present invention.

3 is a flowchart of a method of playing a video cassette recorder according to another preferred embodiment of the present invention;

＊ Description of symbols for main parts of the drawings ＊

10: key input unit 20: microcomputer

30: antenna 40: tuner

50: pilot signal detector 60: recognition signal generator

70: signal processing section 80: deck section

90: playback signal search unit 100: screen

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

1 is a block diagram illustrating a recording / reproducing apparatus of a V.C.R according to an exemplary embodiment of the present invention. The key input unit 10 provides a key signal for executing a recording and playback function, and a key input unit. At the antenna 30 under the control of the microcomputer 20 for generating respective control signals according to the recording and reproducing key signals provided from (10), the antenna 30 for receiving the broadcast signal, and the microcomputer 20. A tuner unit 40 for tuning a broadcast signal of a predetermined channel among the received broadcast signals, and a pilot for detecting a pilot signal from a broadcast signal of a predetermined channel provided from the tuner unit 40 and outputting a discrimination signal according to the presence or absence of a pilot signal ( A pilot signal detection unit 50 and a recognition signal generation unit 60 for generating a recognition signal when a determination signal indicating that a pilot signal has not been detected from the pilot signal detection unit 50 when the recording function is executed is provided; When recording A signal for mixing the broadcast signal provided by the tuner unit 40 and the recognition signal provided by the recognition signal generator 60 to process a recording function by mixing the broadcast signal, and processing the display signal to be displayed during playback. Under the control of the processing unit 70 and the microcomputer 20 when the recording function is executed, the video and audio signals provided from the signal processing unit 70 and mixed recognition signals thereof are recorded on the cassette tape, and the microcomputer 20 of the microcomputer 20 is reproduced. The deck unit 80 that provides a signal to be reproduced according to the control to the signal processing unit 70 and the playback signal output from the deck unit 80 during playback to detect a recorded recognition signal when recording is detected. By providing the microcomputer 20 to the microcomputer 20 to generate a control signal to the deck unit 80 to drive the cassette tape at a predetermined high speed during a period in which the recognition signal is detected. And a reproduction signal search section 90 which includes a screen 100 for displaying an output signal from the playback signal processing unit 70.

The key input unit 10 provides a key signal to the microcomputer 20 to execute recording and playback functions. The microcomputer 20 generates control signals corresponding to the recording and reproducing key signals provided from the key input unit 10 to the deck unit 80 so that the deck unit 80 can reproduce or record the control signals.

The tuner 40 tunes a broadcast signal of a predetermined channel among the broadcast signals received from the antenna 30 under the control of the microcomputer 20, and outputs the tuned signal to the pilot signal detector 50 and the signal processor 70. The signal processing unit 70 processes the broadcast signal provided by being tuned by the tuner unit 40 so as to be recorded, and outputs it to the deck unit 80, and reproduces the playback signal provided from the deck unit 80 during playback. To make it displayable.

Meanwhile, according to the present invention, the pilot signal detector 50 detects a pilot signal from a broadcast signal of a predetermined channel provided from the tuner 40 and outputs a discrimination signal according to the presence or absence of a pilot signal, which is added to the broadcast signal. The transmitted pilot signal is a signal indicating that the broadcast audio signal is an audio multiplex or stereo signal.

In addition, in the case of a recently broadcast program, almost all audio signals are voice multiplexed or stereo signals, or a pilot signal is not detected because audio signals in commercial broadcasts are always broadcast as mono signals. Accordingly, when the pilot signal is detected and the presence or absence thereof is detected, it is possible to determine whether the current broadcast signal is a broadcast signal or a commercial signal of a desired program.

Accordingly, according to the present invention, the pilot signal detection unit 50 detects a pilot signal from the broadcast signal provided from the tuner unit 40, and recognizes the discrimination signal according to whether the pilot signal is detected or not. To provide.

When the recognition signal generator 60 is provided with a determination signal indicating that the pilot signal has not been detected from the pilot signal detection unit 50 when the recording function is executed, the recognition signal generator 60 recognizes that the current broadcast signal is an advertisement broadcast. Generates a recognition signal of the signal to provide to the signal processing unit (70).

Meanwhile, when the recognition signal is not provided from the recognition signal generator 60, the signal processor 70 processes the broadcast signal provided from the tuner 40 and provides it to the deck unit 80, and the recognition signal generator When the recognition signal is provided from 60, the recognition signal is mixed with the broadcast signal provided from the tuner unit 4, processed, and provided to the deck unit 80.

In addition, the deck unit 80 records a video and audio signal mixed with a video and audio signal or a recognition signal provided from the signal processing unit 70 on a cassette tape under the control of the microcomputer 20 when the recording function is executed, and during playback. In response to the control of the microcomputer 20, the signal to be reproduced is provided to the signal processor 70 and the reproduced signal searcher 90.

The reproduction signal search unit 90 searches for a reproduction signal output from the deck unit 80 during reproduction, and provides a detection signal according to the microcomputer 20 when the recognition signal recorded during recording is detected. A control signal is generated by the deck unit 80 to drive the cassette tape at a predetermined high speed during a period in which the recognition signal is detected, that is, during a commercial time.

In addition, the screen 100 displays a video signal provided from the signal processor 70 during reproduction, and a speaker (not shown) transmits an audio signal provided from the signal processor 70 as voice.

2 is a flowchart of a recording method of V.C.R.ac according to another preferred embodiment of the present invention.

In step S10, it is determined whether the recording key signal is input through the microcomputer 20 key input unit 10. When a recording key signal is input in step S10, recording of a desired program is started in step S12.

Then, in step S14, it is determined whether or not the commercial signal is applied according to the presence or absence of the pilot signal. If the commercial is broadcasted in step S14, the process proceeds to step S16 during the period in which the commercial is in progress, i. The commercial recognition signal is recorded and recorded together with the commercial signal during the period of time not being used.

Thereafter, when step S16 is completed, it is determined in step S18 whether a recording end key signal is input. If the recording end key signal is input in step S18, the flow advances to step S20 to stop recording and ends the flow. Otherwise, the flow returns to step S14 to repeat the flow.

3 is a flowchart of a V. C. regeneration method according to another preferred embodiment of the present invention.

The V. C. reproducing method according to the present invention may be performed in a state in which recording of a predetermined desired broadcast program is completed by a recording method as shown in FIG.

That is, in step S30, it is determined whether a reproduction key signal is input. When the playback key signal is input in step S30, playback is started in step S32.

In step S34, it is determined whether the commercial recognition signal is detected in the playback signal. When the commercial recognition signal is detected in step S34, the process proceeds to step S36. In step S34, the cassette tape is driven at a predetermined speed much faster than the playback speed during the period in which the commercial recognition signal is detected. Return to step S34.

On the other hand, if the commercial recognition signal is not detected in step S34, the flow advances to step S38 to determine whether a reproduction end key signal is input.

If a playback end key signal is input in step S38, the flow advances to step S40 to stop playback and ends the flow. If no playback end key signal is input, the flow returns to step S34 to repeat the flow.

As a result, the present invention, in recording and playing the desired broadcast program in V.C.R, records the recognition signal according to the broadcast signal while the commercial is in progress during recording, and detects the commercial recognition signal during reproduction in the advertisement. The cassette tape is advanced at a predetermined high speed during the broadcast section.

Accordingly, the present invention has the effect of reducing the time loss and the user's discomfort caused by the commercial signal by recording the commercial recognition signal together when recording the broadcast program and rapidly advancing the cassette tape for the commercial period during reproduction.

While the invention has been shown and described with reference to certain preferred embodiments, those skilled in the art will recognize that various modifications and changes can occur without departing from the spirit and scope of the invention as set forth in the following claims.

Claims (3)

A key input unit 10 for providing a key signal for executing a recording and reproducing function, a microcomputer 20 for generating respective control signals according to recording and reproducing key signals provided from the key input unit 10, and broadcasting An antenna 30 for receiving a signal, a tuner unit 40 for tuning a broadcast signal of a predetermined channel among the broadcast signals received at the antenna 30 under the control of the microcomputer 20, and the tuner unit 40. And a signal processor 70 for processing the broadcast signal provided after being tuned by the controller to enable recording, and for displaying a playback signal input during playback, and under the control of the microcomputer 20 when the recording function is executed. A deck unit 80 for recording the video and audio signals provided from 70) onto a cassette tape and providing the signals to the signal processing unit 70 to be reproduced under the control of the microcomputer 20 during reproduction. In the recording / reproducing apparatus of the video cassette recorder comprising a screen 100 for displaying the output video signal of the signal processing unit 70, When the audio signal included in the broadcast signal is stereo or voice multiplex, a predetermined pilot signal is added to the broadcast signal and transmitted. A pilot signal detection unit (50) for determining the presence or absence of the pilot signal by detecting a pilot signal in a broadcast signal of a predetermined channel provided from the tuner (40), and outputting a pilot signal presence determination signal accordingly; A recognition signal generator 60 for generating a predetermined recognition signal to the signal processor 70 when a determination signal indicating that the pilot signal is not detected is provided from the pilot signal detector 50 when executing a recording function; The signal processor 70 mixes and processes the recognition signal provided from the recognition signal generator 60 and the broadcast signal provided from the tuner 40 when the recording function is executed, and then the deck unit 80. ) To be recorded in the deck unit 80, When the playback signal output from the deck unit 80 is searched and the recognition signal is detected, the microcomputer 20 sends the control signal to the deck unit 80 by providing the detection signal accordingly. And a playback signal search unit (90) for generating a to drive the cassette tape at a predetermined high speed during a period in which the recognition signal is detected. In the recording method of a video cassette recorder, (A) initiating recording when a recording key signal for recording a predetermined desired broadcast program is input; (B) detecting the presence of a pilot signal in the broadcast signal of the desired program to determine whether the program is being broadcasted; (C) if the pilot signal is not detected in step (b), recognizing that the advertisement is being broadcast and recording the recognition signal along with the broadcast signal during the period; (D) The method of recording a video cassette recorder comprising the step of determining whether the recording end key signal is input and ending the recording. In the playback method of a video cassette recorder, (A) starting playback if a playback key signal is input; (B) if playback is started in step (a), determining whether a commercial recognition signal is detected in a playback signal, and advancing a cassette tape at a predetermined high speed during a period in which the commercial recognition signal is detected; (C) determining whether a playback end key signal is input and stopping playback if it is input; Playback method of a video cassette recorder comprising a.