CN1060906C

CN1060906C - Device for recording and reading a length of use of VCR tape

Info

Publication number: CN1060906C
Application number: CN94102660A
Authority: CN
Inventors: 朴胜哲
Original assignee: Gold Star Co Ltd
Current assignee: LG Electronics Inc
Priority date: 1993-01-21
Filing date: 1994-01-20
Publication date: 2001-01-17
Anticipated expiration: 2014-01-20
Also published as: CN1100869A; JP3350589B2; KR950009592B1; KR940018861A; JPH06275055A

Abstract

A device for recording and reading a length of use of VCR tape provided to record an information on a length of recording period time and detect the information to use the tape efficiently.

Description

The tape consumption record and the reading device of video cassette recorder

The present invention relates to a kind of video cassette recorder, thereby particularly relate to tape consumption record and reading device that the information content that can write down the information of relevant video time amount and detect new record is used the video cassette recorder of tape effectively.

Usually, the video cassette recorder usage counter is represented the tape transport amount.During tape transport, detect the tep reel pulse that the tep reel transducer produces,, thereby determine the tape transport amount, determine the surplus of tape simultaneously corresponding to the counter action of tape transport direction.

But, if adopt this technology, though can represent the initial length of doing the position to end position from tape, be surplus (herein, the origination action position of tape and end position are meant the action original position and the end position of tape hardware), but can not express the actual length of recording section on the tape.

The purpose of this invention is to provide and a kind ofly can know easily that the cassette tape of recording substantial tape length represents and reading device when the tape consumption of camera.

Other purpose of the present invention provides a kind of tape consumption of video cassette recorder to be represented and reading device, even also can easily know its remaining length in certain part of tape.

For realizing such purpose, a kind of device that is used for the logging program residue length of the present invention is characterized in that it comprises:

A routine processes length detection part is used for the trace routine treated length;

A control section is used to produce the program residue length that control signal is partly exported from described routine processes length detection with calculating, and writes down the surplus length of described program with incoming video signal;

A record cycle detection part is in order to detect the specific period of incoming video signal, to write down the vision signal of described program residue length to described input; With

A recording section is used for record controls by described control section with the described specific period of the vision signal of described program residue length record input.

According to a kind of device that is used for the display routine residue length of the present invention, it is characterized in that it comprises:

A residue tracer signal test section is used to detect the residue tracer signal that is positioned at a specific period of a replay signal when the playback of video signal;

A residue tracer signal position detection part is used for exporting, and showing in the regular hour behind the record position that detects the residue tracer signal from described replay signal;

A control section is used to control the residue tracer signal that will output to residue tracer signal test section and mixes with the playback residue tracer signal from described residue tracer signal position detection part, and it is shown in watch-dog;

A mixing portion is used for controlling described residue tracer signal and the video signal mixture that is produced by the demonstration of described display part.

Describe embodiments of the invention in detail below in conjunction with accompanying drawing.

Fig. 1 is according to the tape consumption record of video cassette recorder of the present invention and the block diagram of reading device.

The oscillogram of each several part when Fig. 2 (A) is the operation of recording of device shown in Figure 1 to Fig. 2 (C).

Fig. 3 (A) to Fig. 3 (E) be the oscillogram of device shown in Figure 1 each several part when resetting action.

Fig. 4 represents to ask according to the present invention the example figure of the various surpluses of tape.

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

Fig. 1 is the tape use amount record of video cassette recorder of the present invention and the block diagram of reading device.Comprise: detect tape surplus detector 10 by the surplus of the position, magnetic tape terminal of position arrival at that time; Generation is corresponding to the microcomputer 20 of the control signals such as keying signal of keyboard 21; According to the control signal of microcomputer 20 select to record a video the 1st switch 31 of vision signal of the vision signal of content and playback of content; The blender 32 of the video signal mixture of selecting corresponding to the information signal and the 1st switch 31 of the control signal of microcomputer 20; According to the control signal of microcomputer 20 for the output signal of blender 32 being delivered to two outputs (A, one of B) the 2nd switch of selecting 33; Be connected with the output terminals A of the 2nd switch 33, under the state that can write down on the tape, handle the recording processor 61 of the output signal of (as frequency modulation) blender 32; Be connected with the output B of the 2nd switch 33, show the monitor 70 of the output signal of blender 32; The replay processor 62 of the vision signal of playback of recorded on tape; The horizontal-drive signal detector 41 that vision signal in the vision signal that replay processor 62 is reset after N horizontal-drive signal is taken a sample; Be used for distinguishing decoder 42 by the video signal content of horizontal-drive signal detector 41 samplings; Be used for detecting the vertical synchronizing signal of the vision signal of exporting by blender 32 and the sync separator 51 of horizontal-drive signal; N horizontal-drive signal after vertical synchronizing signal produces the control-signals generator 52 of control signal when arriving; The control signal of control-signals generator 52 is carried out the delayer 53 of stipulated time time-delay; And select control signal of being delayed time and the control signal that produces by control-signals generator 52 by delayer 53 according to the control signal of microcomputer 20, output to the 3rd switch 54 of microcomputer 20 again.

In case through keyboard 21 keying signal (subscription and video recording keying signal or video recording keying signal) is input to microcomputer 20, microcomputer 20 is just exported corresponding to the control signal of carrying out the video recording pattern and the code signal of video time.According to the control signal of microcomputer 20, the 1st switch 31 is selected the vision signal of record, and the 2nd switch 33 selects to be connected the output terminals A of recording processor 61, and the 3rd switch 54 is selected the output signal of control-signals generator 52.

The code signal of microcomputer 20 is gone up and video signal mixture at an arbitrary position by the vision signal of blender 32 at record, with reference to the setting of Fig. 2 A to Fig. 2 C explanation hybrid position.

Detect the vertical synchronizing signal and the horizontal-drive signal of vision signal (waveform of Fig. 2 (A)) with sync separator 51, and N horizontal-drive signal after vertical synchronizing signal when arriving control-signals generator 52 produce control signals (waveform of Fig. 2 (C)).

The 3rd switch 54 is selected the control signal of control-signals generator 52, and it is added to microcomputer 20, microcomputer 20 outputs to blender 32 to the synchronous code signal of the control signal that produces with control-signals generator 52 again, blender 32 video signal mixture in code signal and N horizontal-drive signal interval is got up (waveform of Fig. 2 (B)).As a result, the vision signal that write down is recorded processor 61 and is adjusted to the state that is loaded with code signal frequently and is recorded on the tape after N horizontal-drive signal.

And in case keying signal (playback keying signal) is input in the microcomputer 20 through keyboard 21, microcomputer 20 just produces the control signal of finishing replay mode.

Control signal according to microcomputer 20, the 1st switch 31 is selected the playback of video signal of replay processor 62, the 2nd switch 33 selects to be connected in the output B of monitor 70, and the 3rd switch 54 is the output signal of selection delayer 53 that the output signal of control-signals generator 52 is delayed time then.

If at this moment input can be known the playback surplus keying signal of the playback surplus of the tape of resetting at that time, sync separator 51 just detects the horizontal-drive signal and the vertical synchronizing signal of the playback of video signal (waveform of Fig. 3 (A)) that has passed through blender 32 so.

Control-signals generator 52 is produced the control signal (waveform of Fig. 3 (C)) of living again when N horizontal-drive signal of vertical synchronizing signal arrives, (waveform of Fig. 3 (D)) is input to the 3rd switch 54 after delayer 53 is delayed time the control signal of control-signals generator 52 in required time.After being selected by the 3rd switch 54, the control signal of time-delay is input to microcomputer 20, microcomputer 20 produces the possible surplus recognition signal of demonstration according to the control signal of delayer 53 time-delays, and control blender 32 mixes this signal (waveform of Fig. 3 (E)) with playback of video signal 8.

The surplus recognition signal that microcomputer 20 produces is tried to achieve surplus through horizontal-drive signal detector 41 and decoder 42, that is: horizontal-drive signal detector 41 detects N horizontal-drive signal of the vision signal of playback, sampling (waveform of Fig. 3 (B)) then, the code signal of decoder 42 from through the signal of sampling, mixing when distinguishing out record, thus the information magnitude of writing time tried to achieve.Microcomputer 20 control blenders 32 are presented on the monitor 70 after the recognition information of decoder 42 and the mixing of playback of video signal.Like this, when the input of input playback surplus keying signal, just pass through the recognition information of monitor 70 display decoders 42.

Fig. 4 is the various examples of expression surplus information, and surplus information is to use the output signal of the code signal that carries on the playback of video signal and tape surplus detector 10 to be produced by microcomputer 20.

If the original position of magnetic recording content is called S, the length of the final position from original position to this recorded content is T, the terminal location of tape hardware is E, Ru Kou tape location was P at that time, so, surplus amount from initial playback action starting position to the terminal location of tape hardware is exactly E-S, and tape location at that time is E-P to the remaining time of position, magnetic tape terminal, and the playback surplus from current magnetic tape reproducing position to the end position of this recorded content is T-P.

As mentioned above, according to the present invention, video signal recording on tape the time, temporal information corresponding to record length is blended on the assigned position of vision signal and notes again, playback time detects and the recognition temporal information, thereby tries to achieve the playback surplus, and this playback surplus be blended in the regulation locative vision signal on, on picture, show again.Because video cassette recorder has shown the playback surplus of tape at playback time, so, be very easily to the user.

Though be described at video cassette recorder in an embodiment of the present invention, yet the present invention also is applicable to cassette tape recorder and other recording/displaying devices.

Claims

1. device that is used for the logging program residue length is characterized in that it comprises:

2. device as claimed in claim 1 is characterized in that, described program residue length obtains from omnidistance preface record length by the operation sequence treated length.

3. device as claimed in claim 1 is characterized in that, the specific period of described incoming video signal is the vertical blanking cycle of incoming video signal.

4. device that is used for the display routine residue length is characterized in that it comprises:

5. device as claimed in claim 4 is characterized in that, described specific period is the vertical blanking cycle.

6. device as claimed in claim 4 is characterized in that, described residue tracer signal position detection part comprises decay part, is used for postponing horizontal-drive signal in a special time.