KR20000034589A - Method for searching broadcasting channel in playback mode of tvcr - Google Patents

Abstract

PURPOSE: A method for searching broadcasting channel in playback mode of TVCR is provided so that a user can escape a troublesome key handling such as stopping drive of deck, turning mode to television mode, verifying content of a broadcasting channel, turning mode to video mode again and driving deck by managing and displaying a broadcasting signal received to a prescribed channel during a prescribed time by simple key handling while executing a playback mode in video mode and by turning mode to a playback mode again automatically. CONSTITUTION: In a TVCR which has combined functions of TV and VCR, signals recorded in a video cassette tape loaded in a deck are played back and outputted by controlling the deck if key input for playback is permitted.(200,202) If a prescribed key input for broadcasting channel search is permitted, the deck is turned to still mode and broadcasting signals received to selected channel in a tuner are managed and outputted by controlling the tuner.(204,206,208) If a prescribed time passes, the still mode is released and the signals recorded in the video cassette tape are played back and outputted again by controlling the deck.(214,216,202)

Description

A method for searching channel content on play-back mode of a TVCR

The present invention relates to a method for searching for a broadcast channel in a playback mode in a TVCR. In particular, in a TVCR having a combined function of a television and a video cassette recorder, a user checks a television broadcast program when a user plays back and watches a signal recorded on a video cassette tape. In order to perform the predetermined key operation, the deck which is playing the video cassette tape is switched to the still mode, and the broadcast signal received through the preset television broadcast channel is output so that the user can conveniently watch the reproduced signal. The present invention relates to a broadcast channel search method in a playback mode in a TVCR capable of searching for a broadcast channel.

In general, a television separately detects and demodulates and amplifies an airwave broadcasting signal of a predetermined channel received through a tuner into a video signal and an audio signal, displays a video signal through a water pipe (CRT), and outputs an audio signal through a speaker. It is a device that can output and watch television broadcast programs.

Meanwhile, a video casette recorder separates a broadcast signal received from a tuner into a video and audio signal, records the video signal on a video cassette tape using a video head and an audio head, respectively, and records the recorded video and audio signals. It is a device that can reproduce and output by using the head and the audio head.

On the other hand, the above-described television and video cassette recorder are typically provided together so that the viewer can output the video tape signal including the video and audio signals reproduced in the video cassette recorder through the television's receiving tube and speaker, You can play movies and educational programs recorded on the TV.

However, the above-mentioned two electronic products are integrated into the characteristics of the user because it is convenient for the user's point of view, and a TVCR was developed as a combination product having both these functions. Such a TVCR is provided with two tuners as the first tuner. While watching the received broadcast program, the broadcast signal received by the second tuner can be recorded on a video cassette tape at the same time, or in a TVCR equipped with one tuner, the broadcast program being watched is recorded or the reservation information is set. In the standby mode, automatic recording can be performed using the set reservation information.

On the other hand, in TV, its functions are diversified to meet the needs of viewers, and various functions are added to satisfy the various needs of these viewers.

For example, in a broadcasting system providing an extended data service (EDS), data for broadcast programs and scheduled recording on a broadcast signal, for example, a channel, a broadcast category (eg, news, drama, sports, etc.), a broadcast start / KBPS decoder on the video receiving device side by converting various program information such as the end time / standard time data, etc. into digital signals and inserting them in any horizontal line during the vertical blanking interval (VBI) This signal is decoded so that broadcasting program reservation recording function and automatic time correction function can be performed.

In addition, as a broadcasting system for providing such an EDS, there are, for example, Korea Broadcasting Program System (KBPS) in Korea, VPS (Video Programming System) in Germany, and PDC (Program Delivery Control) in the UK.

Therefore, conventionally, reservation recording is performed by using the reservation recording data included in the EDS data of the broadcasting system providing the above-described EDS, or the user directly inputs the information for the reservation recording so that the user can enter even when the user is absent. Reservation recording was performed based on the reservation recording information.

On the other hand, during playback in a TVCR, the deck is controlled to read and process the video and audio signals recorded on the video cassette tape loaded on the deck, and output them to the monitor and the speaker, thereby allowing the user to watch the reproduced signal.

However, at this time, in order to watch a broadcast program received on a broadcast channel, the user switches to the television mode while the deck is stopped and views the broadcast signal received by the tuner, and then again views the signal recorded on the video cassette tape. In order to operate a predetermined playback key while watching the signal reproduced again while switching to the video mode with a predetermined key operation, it is inconvenient to perform a number of cumbersome key operations.

Therefore, in the present invention, when a user plays back a video cassette tape and is watching what broadcast program is being performed, the present invention seeks a way to identify a desired broadcast program and switch back to the playback mode by simple key operation. It became.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to receive a preset channel by a simple key operation when a playback mode is performed in a video mode in a TVCR equipped with a television function and a video cassette recorder function. By processing and displaying the broadcast signal for a predetermined time and automatically switching back to the playback mode, the TVCR allows a user to easily check what is being received on the broadcast channel when playing and watching a signal recorded on a video cassette tape. The present invention provides a method for searching for a broadcast channel in a playback mode.

1 is a block diagram of a TVCR employed in accordance with the present invention.

2 is a flowchart illustrating a broadcast channel search process in a playback mode in a TVCR according to a preferred embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

10: key input unit 20: microcomputer

30: tuner 40: video and audio signal processing unit

50: switch unit 60: monitor

70: speaker 80: recording signal processing unit

90 deck portion 100 reproduction signal processing unit

The broadcast channel searching method in a playback mode in a TVCR according to the present invention is an automatic mode switching method in a TVCR having a TV and a video cassette recorder function. Reproduces and outputs a signal recorded on a cassette tape, and when a predetermined key input for searching for a broadcast channel is applied, switches the deck into a still mode and controls the tuner to process a broadcast signal received through a channel set in the current tuner. And counting whether a predetermined time has elapsed, controlling the deck to release a still mode, and replaying and outputting a signal recorded on a video cassette tape when the predetermined time elapses. Characterized in that made.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

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

1 is a block diagram of a TVCR employed in accordance with the present invention, which includes a key input unit 10, a microcomputer 20, a tuner unit 30, a video and audio signal processing unit 40, a switch unit 50, a monitor ( 60, a speaker 70, a recording signal processing unit 80, a deck unit 90, and a reproduction signal processing unit 100.

In this configuration, the key input unit 10 is an input means for performing the operation of the TVCR, and is provided with various keys for performing the operation of the TVCR including a play key, a broadcast channel confirmation key, and the like. It outputs a corresponding key signal, typically using a remote control for the user to conveniently input at a remote location, and transmits a key signal corresponding to a predetermined key provided on the remote control on an infrared carrier, and transmits an IR ( Infrared) The receiving unit receives the infrared signal applied from the remote controller, amplifies and detects the signal, and applies the detected key signal to the microcomputer 20 which will be described later.

Then, the microcomputer 20 controls the overall operation of the TVCR based on the key signal from the key input unit 10, and the tuner unit 30, the image and the video mode in the television mode based on the key signal from the key input unit 10. The audio signal processor 40 and the switch unit 50 are controlled to output the broadcast signal received from the tuner unit 30 through the monitor 60 and the speaker 70, and the same as in the above-described television mode in the recording mode. While performing the operation, the deck unit 90 is controlled to record the broadcast signal received from the tuner unit 30 to the video cassette tape, or the deck unit 90 and the switch unit 50 are controlled to control the video cassette tape in the playback mode. Reproducing the video and audio signals recorded in the control to output to the monitor 60 and the speaker 70.

In addition, the microcomputer 20 stops driving the capster motor which rotates the video cassette tape by controlling the deck unit 90 when a key signal for checking the broadcast channel is applied from the key input unit 10 in the playback mode. And tune the tuner unit 30 to tune to the currently preset channel, and control the image and audio signal processor 40 and the switch unit 50 to process the received broadcast signal to monitor the monitor 60 and the speaker ( 70), a predetermined time is counted using an internal timer, and when a predetermined time elapses, the still mode of the deck unit 90 is controlled to be released, and the switch unit 50 is controlled to switch to the regeneration mode again. The signal reproduced at 90 is controlled to be output to the monitor 60 and the speaker 70.

Meanwhile, the tuner unit 30 outputs a broadcast signal received by being tuned to a channel corresponding to the control of the microcomputer 20.

In addition, the video and audio signal processing unit 40 separately detects, demodulates, and amplifies a broadcast signal received from the tuner unit 30 into a video and audio signal under the control of the microcomputer 20 to switch the processed video signal. The monitor 50 is output to the monitor 60 through the unit 50, and the processed audio signal is also output to the speaker 70 through the switch unit 50.

On the other hand, the recording signal processing unit 80 processes the broadcast signal received and applied from the tuner unit 30 into a recordable video signal and an audio signal and outputs it to the deck unit 90 described later.

The deck unit 90 includes a capstan motor for rotating the video head, the audio head and the video tape, a deck for loading and unloading the drum mode and the video cassette tape for rotating the drum provided with the video head and the audio head. A mechanism and servo control means for recording video and audio signals from the video signal processing unit 80 under the control of the microcomputer 20 to the video cassette tape or to the video cassette tape. The recorded video and audio signals are reproduced by using the video head and the audio head, and the reproduced video and audio signals are output to the reproduction signal processor 100 to be described later.

Meanwhile, the reproduction signal processor 100 processes the reproduced video and audio signals applied from the deck unit 90 and applies them to the switch unit 50.

Next, a detailed description will be given with reference to a flowchart of FIG. 2 attached to a broadcast channel search process in a playback mode according to a preferred embodiment of the present invention in a TVCR employed according to the present invention having the above-described configuration.

First, in the television mode, a broadcast signal received from the tuner unit 30 is processed by the video and audio signal processing unit 40 in a channel corresponding to the control of the microcomputer 20, and the monitor 60 is connected to the monitor 60 through the switch unit 50. It is output through the speaker 70, respectively.

On the other hand, in the recording mode of the video mode, the broadcast signal received from the tuner unit 30 under the control of the microcomputer 20 controls the recording signal processor 80 and the deck unit 90 to record on a video cassette tape, In the playback mode, the deck unit 90, the playback signal processing unit 100, and the switch unit 50 are driven under the control of the microcomputer 20, so that the video and audio signals recorded on the video cassette tape are reproduced and the monitor 60 And the reproduced signal can be viewed through the speaker 70.

On the other hand, the user operates the playback key provided in the key input unit 10 to perform the above-described playback mode, and thus the microcomputer 20 determines whether a key signal for playback is applied from the key input unit 10. (Step 200).

At this time, when a key signal for reproduction is applied from the key input unit 10, the microcomputer 20 controls the deck unit 90 and the switch unit 50 to record the video cassette recorder loaded in the deck unit 90. The video and audio signals are read out and controlled to enter the playback mode (step 202).

Then, the video and audio signals read out from the deck unit 90 are processed into video signals that can be displayed by the reproduction signal processing unit 100 and audio signals that can be output, respectively, so that the monitor 60 and the speaker ( 70).

Thus, the user can view the signal recorded on the video cassette tape.

At this time, the user manipulates the broadcast channel confirmation key provided in the key input unit 10 in order to check the contents received through the broadcast channel while watching the reproduced signal. Thus, in the above-described playback mode, the microcomputer 20 uses the key input unit ( 10, it is determined whether a predetermined key input for confirming a broadcast channel is applied (step 204).

At this time, when a predetermined key signal for checking the broadcast channel is applied from the key input unit 10, the microcomputer 20 controls the deck unit 90 to switch to the still mode (step 206).

Still mode means playback with the capstan motor that rotates the video cassette tape stopped, that is, stop mode playback. The still state of the video head and the video cassette tape provided on the drum is stopped without advancing the video cassette tape. The position continues to play, so you can watch still images.

Next, the microcomputer 20 controls the tuner unit 30 to tune to the preset current channel, and controls the video and audio signal processing unit 40 and the switch unit 50 to switch to the television mode (step 208). .

Then, the broadcast signal received from the tuner unit 30 is processed and output to the monitor 60 and the speaker 70, and the user can check the contents of the broadcast channel while watching the playback signal.

Next, the microcomputer 20 starts counting the predetermined time (step 210), and determines whether the specified predetermined time has elapsed (step 212).

At this time, when the predetermined time elapses, the tuner unit 30, the video and audio signal processing unit 40, and the switch unit 50 are controlled to release the television mode (step 214).

Then, the deck unit 90 is controlled to release the still mode (step 216), at which time the deck unit 90 plays back the loaded video cassette tape because the still mode is released, and plays in the still mode. Since the mode is switched, the user can watch the playback signal again from the end of the playback.

On the other hand, after the above-described step 216 and proceeds to the above-described step 202 to continue the playback mode, in step 204 the predetermined key signal for confirming the broadcast channel is applied from the key input unit 10 If not, the microcomputer 20 determines whether a predetermined key signal for terminating the playback mode is applied from the key input unit 10 (step 218).

In this case, when a key signal for ending the playback mode is applied, the microcomputer 20 controls the deck unit 90 to end the playback mode (step 220).

Meanwhile, in the preferred embodiment of the present invention, before switching to the play mode, only a single channel preset in the tuner is searched in the play mode, but the user sets a predetermined number of channels of interest and automatically searches for the predetermined channels sequentially. Modifications, such as switching to the number of times and playback mode, are possible.

Therefore, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the spirit of the present invention.

As described above, according to the present invention, the user can stop the driving of the deck in the playback mode and switch to the television mode by allowing the user to check the contents of the broadcast channel with a simple key operation while watching a signal reproduced in the playback mode on the TVCR. By checking the contents of the broadcasting channel and switching back to the video mode, it is possible to avoid cumbersome key operation such as driving and playing the deck.

Claims (1)

As an automatic mode switching method in a TVCR with a television and video cassette recorder function, Controlling a deck when a key input for reproduction is applied to reproduce and output a signal recorded on a video cassette tape loaded on the deck; Switching a deck into a still mode and controlling a tuner when a predetermined key input for searching for a broadcast channel is applied to process and output a broadcast signal received through a channel set in the current tuner; Counting whether a predetermined time has elapsed, and controlling the deck to release a still mode to replay and output the signal recorded on the video cassette tape when the predetermined time elapses. How to search for a broadcast channel.