KR20000040330A - Method for automatically appointing playing position of vcr - Google Patents

Abstract

PURPOSE: An automatic appointing method of playing position in a VCR is provided to automatically play from a screen needed to see with one input of key by memorizing a remained amount of tape in the VCR. CONSTITUTION: After memorizing a remained amount of tape during playing the tape, an existence of tape inside a deck is decided when a playing key of tape remained amount is inputted. In existing the tape inside the deck, the tape is stopped when a present mode is a playing mode and the tape is played in an appropriate position by searching the memorized remained position of tape. If the tape is not existed inside the deck or the present mode is a recording mode, an appropriate message is outputted. Thereby a screen needed to see is shown with one input of key and a first part of program is played by passing an advertising part when a rental tape is played.

Description

How to specify the automatic playback position of VSI

The present invention relates to an automatic playback position designation method of a VCR, which stores a remaining amount of tape in a VCR so that the tape is automatically played on a screen to be viewed by one key input during tape playback.

A VCR is an electronic device that has a function of recording a signal provided from various regular broadcast programs, external video sources, or the like on a video tape or through a TV receiver, and has a playback function without a recording function of a VCR. It is called a VCP (Video Cassette Player).

There are two types of VCRs in Japan, the VHS method and the beta method, which are widely used in the world, and the current home VCRs are the two main methods.

Both methods have a common point in that they record and play back using 1 / 2-inch-wide video tapes stored in a cassette, but the two methods are not compatible. That is, the size of the cassette used, the traveling mechanism of the tape, the recording method, and the like are completely different.

As the recording mode, the beta system has three types of beta 1, beta 2, and beta 3 (maximum recording time of 5 hours), and the VHS system has two types of standard mode and triple mode (maximum recording time of 8 hours). .

And home VCRs are largely classified into fixed type and portable type.

The stationary type is produced for the purpose of recording and playing back TV programs in combination with a TV receiver in the home. It is structured to be used in a set position and has a built-in tuner for recording TV programs. .

On the other hand, the portable type is mainly designed to shoot video using a camera.

Therefore, the tuner is not built in to be compact and lightweight for convenient transportation, and a tuner adapter is required separately when recording TV programs.

In addition, the VCR includes a high-fidelity VCR, which means a high-quality VCR.

Hi-Fi VCR was developed with the aim of performance close to CD in order to obtain high-quality voice corresponding to the A / V era, and the beta method is beta hi-fi and the VHS method is VHS pi-fi.

The beta hi-fi method modulates an audio signal to the video head by multiplexing it to a video head and recording it on a video track.The VHS hi-fi method installs a new rotating head dedicated to the audio signal and then modulates the FM signal. Supply it and record it on the tape.

The video signal is recorded thereon in the same manner as in the prior art, in which case the audio signal is recorded in the deep portion of the magnetic layer of the tape, and the video signal is recorded shallowly on the surface of the tape.

And video tapes recorded on hi-fi VCRs can be played back on regular VCRs.

1 is a schematic block diagram of a general VCR system.

As shown in the drawing, a deck unit 2 which performs a deck operation for recording / playback under the control of the control unit 1 is connected to the control unit 1 which controls the overall VCR system, and the control unit 1 And the deck unit 2 is connected to the servo unit 3 for controlling the drive motor and the like on the deck unit 2 side.

In addition, the control unit 1 and the deck unit 2 are connected to a video signal processing unit 4 for processing a signal reproduced through the deck unit 2 under the control of the control unit 1, the control unit ( 1) and the video signal processor 4 are connected to an OSD unit 5 for generating an OSD (On Screen Display) screen under the control of the controller 1.

The OSD unit 5 is connected to a modulator 6 for modulating the output of the OSD unit 5 to an RF signal to the TV receiver 7, and the TV receiver 7 is connected to the modulator 6. do.

In addition, the control unit 1 is connected to a key input unit 8 for various key inputs and a display unit 9 for performing various displays including time and channel display, and outputs a regular broadcast signal from an antenna ANT of the VCR system. A tuner 10 that receives and performs channel tuning is connected to the control unit 1 and the video signal processing unit 4.

In such a VCR system, the tape reproduction signal reproduced through the deck unit 2 is processed by the video signal processing unit 4 and output.

In this case, if there is an OSD screen generated by the OSD unit 5, the OSD screen signal is also output. The output of the OSD unit 5 is converted into an RF signal through the modulator 6, and then the TV receiver 7 is output. Is output.

On the other hand, the recording of the regular broadcast signal is processed by the video signal processing unit 4 and the normal broadcast signal input to the tuner 10 through the antenna ANT and recorded through the deck unit (2).

Functions used for searching for programs recorded on a video tape in the above VCR system include VISS (Video Index Searching System), VASS (Video Address Searching System), and Index Plus.

The video tape has an audio track for recording an audio signal on the upper side, a control track for recording the control signal on the lower side, and a video track for recording the video signal on the lower side.

There is a VBI (Video Blanking Interval) line carrying a vertical synchronization signal between each frame of the video track.

In addition, the control signal on the control track is recorded by magnetizing the control head with a certain duty ratio with N polarity or S polarity. Generally, N polarization magnetization: the current component duty ratio according to S polarization magnetization is about 6: 4. Accordingly, the duty ratio of the high component and the low component in each pulse is 6: 4, which is 0 level, that is, the low level, and the current component according to the N polarization magnetization: The duty ratio of the current component according to the S polarization magnetization is about 3: 7. Therefore, the case where the duty ratio of the high component and the low component is 3: 7 in each pulse is defined as one level, that is, the high level.

On the other hand, the VISS generates a control signal of zero level form at the beginning of the program, and a control signal of one level form at the start of the program to mark the start position of the program.

Therefore, when the program recorded on the videotape is played back, the recording position of the program is recognized by the control signal of the first level of the start position of the program.

The VISS can only be searched forward or backward from the current position.

Therefore, VISS can only find relative positions.

In addition, VASS generates a control signal of zero level when a program is not recorded, arranges two control signals of zero level at both ends at a start position of the program, and provides a predetermined number of control signals of one level therebetween. Arrange.

Therefore, unlike the VISS, VASS can find a desired program by performing FF or REW at any position.

In other words, VASS can search absolute position.

In the case of a rental tape in the first VBI section of the video tape, Index Plus carries the address and data (title of each program) of the program on the tape, and the consumer address tape contains the address of the program in the VBI section in a predetermined screen unit. It carries data (the system's memory records the tape ID and address and data for the program), and during playback displays the program address and data for both rental and consumer tapes with the OSD when the index plus key is entered. It is a function to search a program by making it possible.

The VISS, VASS, and Index Plus functions are all used for program-level searches, and they all have to be keyed two or more times to find a desired program.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and an object of the present invention is to provide an automatic playback position designation method of a VCR which automatically plays back a desired screen by one key input operation when the tape remaining memory is memorized.

1 is a schematic block diagram of a general VCR system

2 is a schematic block diagram of a VCR system to which the present invention is applied;

3 is a flowchart for performing an automatic playback position designation method of a VCR according to the present invention.

* Description of the symbols for the main parts of the drawings *

13: video signal processor 14: OSD unit

17: key input unit 18: memory unit

19: control unit

The automatic playback position designation method of the VCR according to the present invention for achieving the above object is to store the remaining tape amount during tape playback, and then to check the presence or absence of the tape in the deck at the time of key input for playback at the position corresponding to the remaining tape amount. If there is a tape in the deck, the current mode is judged. In the playback mode, the tape is stopped, the remaining tape is searched for, and the tape is played at the corresponding position. It is characterized by.

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

2 is a block diagram of a VCR system to which the present invention is applied.

As shown in the figure, a servo unit 12 for controlling a driving motor and the like on the deck unit 11 side is connected to the deck unit 11 performing a deck operation for recording / playback, and the deck unit 11 And a video signal processor 13 for processing a signal reproduced by the deck unit 11 is connected to the controller 19.

The controller 19 and the video signal processor 13 are connected to an OSD unit 14 for generating an OSD screen under the control of the controller 19, and the OSD unit 14 outputs the output of the OSD unit 14. The modulator 15 for modulating the RF signal to the TV receiver 16 is connected, and the TV receiver 16 is connected to the modulator 15.

In addition, the control unit 19 is connected to a key input unit 17 for various key input, and a memory unit 18 for storing the remaining amount of tape, the control unit 19 is stored in the memory unit 18 When a key for reproducing at a position corresponding to the remaining tape amount (hereinafter referred to as a remaining tape playing key) is input, the deck unit 11 and the servo are operated so that the video tape is played at the remaining tape position stored in the memory unit 18. Configured to control section 12, wherein memory section 18 is an EEPROM.

FIG. 3 is a flowchart for performing an automatic playback position designation method of a VCR according to the present invention, wherein the remaining tape playback key for playback at a position corresponding to the remaining memory tape remaining in the state where the remaining tape time is memorized If is input, the control unit 19 performs steps S1 and S2 of determining whether a video tape exists in the deck, and performs a step S3 of determining the current tape mode state if the video tape exists in the deck. do.

In step S2 and step S3, if there is no tape in the deck or the tape mode state is the recording mode, step S4 of displaying a corresponding message is performed. In step S3, the tape mode state is the playback mode. If it is determined that the tape is stopped, a step (S5-S7) is performed to read the remaining amount of the tape stored in the memory unit 18, search for the corresponding position, and play it at that position.

In the present invention as described above, when the user inputs a key for the remaining tape memory at the portion to be viewed again during tape playback, the remaining memory from the current tape position to the end of the tape is stored in the memory unit 18.

In this state, when the user inputs the remaining tape playback key, the controller 19 determines whether a tape exists in the deck (S1, S2).

If it is determined in step S2 that there is no tape in the deck, the controller 19 outputs a message of no tape on the screen using the OSD unit 14 (S4).

If it is determined in step S2 that the tape is present in the deck, the tape mode state is determined (S3). If it is determined that the recording mode is present, the current recording is performed on the screen using the OSD unit 14 so that no other key is input. Outputs a message that it is busy (S4).

If it is determined in step S3 that the playback mode is being played, the tape is stopped if the current tape is being played, the remaining amount of tape stored in the memory unit 18 is read, the corresponding position is searched to start playback at the position (S5). -S7).

Therefore, the user can see the screen to see again.

As described in detail above, the present invention stores the remaining tape so that a desired screen can be viewed by one key operation, and the rental tape can be played directly at the beginning of the program.

Claims (1)

After the remaining tape is memorized during tape playback, the first step of judging whether there is a tape in the deck when the remaining tape playback key is input, the second step of judging the current mode if there is a tape in the deck, and the current mode is the playback mode. A third step of stopping the tape and searching the memory remaining tape position to play the tape at the corresponding position; and outputting a corresponding message if the tape does not exist in the first stage or in the recording mode in the second stage. The automatic playback position designation method of the VCR characterized by consisting of steps.