CN1111792A - Video cassette recorder with automatic rewind and play function - Google Patents
Video cassette recorder with automatic rewind and play function Download PDFInfo
- Publication number
- CN1111792A CN1111792A CN94116855A CN94116855A CN1111792A CN 1111792 A CN1111792 A CN 1111792A CN 94116855 A CN94116855 A CN 94116855A CN 94116855 A CN94116855 A CN 94116855A CN 1111792 A CN1111792 A CN 1111792A
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- China
- Prior art keywords
- signal
- mentioned
- video
- rewinding
- play
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
Landscapes
- Management Or Editing Of Information On Record Carriers (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
The invention relates to a box type videotape recorder, which can rewind automatically and then broadcast a videotape as long as a key is pressed down once. The box type video tape recorder is provided with a key which generates a rewinding signal or a broadcasting signal according to the instruction of a user and a starting-up sensor which can produce a starting signal when the leading part of the videotape is detected. After the videotape rewinding is finished, because the leading part is detected, the starting-up signal is sent out. The starting signal is converted into the broadcasting signal in a micro computer, hence, the videotape broadcasts automatically from the beginning, thereby the using of the box type video tape recorder is more convenient.
Description
The present invention relates to video tape recorder, particularly have the video tape recorder of automatic rewinding/playing function.
For easy to use, video cassette recorder generally is provided with the preprogramming function of automatic reproducing function, time-out/still function or the simplification such as G sign indicating number preprogramming.
Existing video cassette recorder also is respectively equipped with rewind key and play button.The user is if use this existing video cassette recorder, is being ready to after record has the video-tape of program on it so, just this tape packed in the tape transport of video cassette recorder.Then, whether the customer inspection video-tape pours into reference position fully and presses play button and play video recording.Unless video-tape is poured into reference position, with the person just from tape to the somewhere but not begin to watch video recording from section start.
Fig. 1 is the rewinding of the existing video cassette recorder of explanation and the block scheme of play operation.If rewinding is not to reference position for video-tape, the user just presses the rewind key 10 of keyboard portion to this tape back of packing in the cassette holder if want to start anew to watch video recording so.The rewinding state just reaches the microcomputer in the system controller part, and system controller partly is used for monitoring the state of total system and controls this system.Produce the rewinding control signal in the microcomputer 12, thereby according to rewind key State Control leading shaft motor driver 14.The rewinding control signal makes leading shaft motor driver 14 drive the leading shaft motor (not shown) with desired speed, thereby carries out rewinding.Leading shaft motor driver 14 makes the leading shaft motor (not shown) rotate with desired speed according to the control signal from microcomputer 12, thereby satisfies the rewinding state of video cassette recorder.Therefore, the pinch roller of video cassette recorder is activated, thereby carries out rewinding.After tape had fallen, initial sensor 16 used optical diode to detect the leader that is contained on the video-tape the beginning part, therefore sends a signal, passes to microcomputer 12.Then, microcomputer 12 is according to from this signal of start sensor 16 and send stop instruction signal, and this signal is passed to leading shaft motor driver 14.Leading shaft motor driver 14 is according to the rotation that stops leading shaft motor from this stop instruction signal of microcomputer 12, thereby stops the rewinding of video-tape and protect video-tape not to be damaged.
Then, the user just presses play button 18 if will watch program.The state of play button 18 reaches microcomputer 12.Simultaneously, cam switch 17 is passed to the microcomputer 12 that detects current state to the information of the current state of the relevant tape transport that video-tape is housed, if tape transport is not in broadcast mode, microcomputer 12 just drives the loading motor driver 15 of the state that is used for determining tape transport, thereby tape transport is placed broadcast mode.And microcomputer 12 sends play signal and passes to leading shaft motor driver 14, and this driver 14 promptly drives leading shaft motor with desired speed, satisfies broadcast mode and drives pinch roller.Simultaneously, microcomputer 12 starts voicefrequency circuit and video circuit according to play signal, thereby plays video-tape.
In above-mentioned existing video cassette recorder, if will start anew to watch program, must wait until after video-tape has all fallen and just can press play button that this is pretty troublesome.In the video center that will handle many video recorders or people will handle many video recorders simultaneously the time, aforesaid operations is very time-consuming, thereby has increased labour cost.
Therefore, the purpose of this invention is to provide a kind of video cassette recorder with automatic rewinding/playing function, need only by next key once, just from the beginning rewinding also plays video-tape automatically.
For realizing above-mentioned purpose of the present invention, the video cassette recorder that is provided comprises:
Produce the device of rewinding/play signal according to user instruction;
Start sensor produces initiating signal when detecting the leader of image-tape;
Microcomputer produces the rewinding control signal and produces the Play Control signal according to initiating signal according to rewinding/play signal;
Load motor driver, according to from the rewinding of microcomputer and the mode of Play Control signal controlling tape transport;
Cam switch is passed to microcomputer to the current state of tape transport;
The leading shaft motor driver drives image-tape according to rewinding control signal or Play Control signal with certain rotating speed;
The audio/video circuit is according to the vision signal and/or the sound signal of Play Control signal reproduction video-tape.
According to the preferred embodiment of the present invention, this video cassette recorder can be included in termination sensor that sends termination signal when detecting the video-tape latter end and the device that sends the rewinding control signal according to this termination signal.This video recorder also can be provided with the display part, explicit user instruction and the video cassette recorder duty corresponding with user instruction.
After image-tape has all fallen according to rewinding/play signal, because of initiating signal takes place the leader that detects image-tape.This initiating signal converts play signal in microcomputer, make that image-tape starts anew to play automatically.Therefore, as long as the user is by next key once, and image-tape is play then automatically just to reference position, the use of video cassette recorder that this is just convenient.
By following detailed description of preferred embodiments in conjunction with the accompanying drawings, above-mentioned purpose of the present invention and other advantage will be more obvious.
Fig. 1 is the rewinding of the existing video cassette recorder of explanation and the block scheme of play operation;
Fig. 2 is the rewinding of the video cassette recorder with automatic rewinding/playing function of the explanation embodiment of the invention and the block scheme of play operation.
Describe video cassette recorder of the present invention in detail below in conjunction with accompanying drawing.
Fig. 2 is the rewinding of the video cassette recorder with automatic rewinding/playing function of the explanation embodiment of the invention and the block scheme of play operation.Video cassette recorder comprises shown in the accompanying drawing: rewinding/play button 20, send rewinding/play signal according to user instruction; Start sensor 22 sends initiating signal when detecting the video-tape leader; Microcomputer 24 sends the rewinding control signal and sends the Play Control signal according to initiating signal according to rewinding/play signal; Load motor driver 25, the tape transport of video-tape is housed according to rewinding and Play Control signal controlling; Cam switch 27 is passing to microcomputer 24 from the current state of the detected tape transport of tape transport; Leading shaft motor driver 26 drives video-tape according to rewinding control signal or Play Control signal with certain speed; And audio/video circuit 28, according to the vision signal and/or the sound signal of Play Control signal reproduction video-tape.
In addition, be provided with in the machine box and stop sensor 32, when detecting the latter end of video-tape, send termination signal.This termination signal reaches microcomputer 24, thereby thread out signal (being that termination signal converts thread out signal to) takes place, and this video cassette recorder also is provided with display part 30, the duty of explicit user instruction and the video cassette recorder corresponding with user instruction.
The working condition of video cassette recorder of the present invention is described in detail in detail below.
After in the tape transport of video cassette recorder that rewinding video-tape is to the end not packed into, press rewinding/play button 20.Then, produce rewinding/play signal in rewinding/play button 20, this signal is transfused to the microcomputer 24 in the system controller part.System controller partly is equipped with microcomputer 24, is used for monitoring the current state of the tape transport that video-tape is housed and produces control signal according to user instruction.The state of tape transport is passed to microcomputer 24 by cam switch 27.
In microcomputer 24, after converting thread out signal to, the rewinding/play signal of input microcomputer 24 passes to leading shaft motor driver 26.Leading shaft motor driver 26 according to the rewinding control signal to be suitable for certain rotating speed CD-ROM drive motor (not shown) of video-tape rewinding.According to the rotation of motor, pinch roller is driven and video-tape is carried out rewinding.Simultaneously, display part 30 demonstrates video-tape and is in the rewinding state.
After video-tape had all fallen, start sensor 22 used optical diode to detect the leader that is contained in the video-tape the beginning part, thereby sends initiating signal.This initiating signal input microcomputer 24 converts play signal there to.Then, the tape transport of video cassette recorder is transformed into broadcast state according to play signal, and, sending the rewinding stop signal according to play signal, this signal reaches the leading shaft motor driver, stops CD-ROM drive motor.Therefore, video-tape stops rewinding.The program of microcomputer 24 is establishment so preferably, only produces a play signal according to detected initiating signal after rewinding is finished.Then, microcomputer 24 outputs to the main drive shaft motor driver to the Play Control signal according to play signal, thereby to be suitable for playing the rotating speed CD-ROM drive motor of video-tape.Therefore, pinch roller is driven with a desired speed.
Simultaneously, microcomputer 24 also starts video/audio circuit 28 according to play signal, thereby plays video recording.At this moment, display part 30 demonstrates the in progress state of this video cassette recorder.
According to rewinding and Play Control signal, load the state of motor driver 25 control tape transports from microcomputer 24.
After video-tape has been put, stop sensor 32 and use optical diodes, send termination signal then to detect the transparent latter end that is contained in video-tape end with the same mode of start sensor 22.This termination signal converts second thread out signal to after being input in the microcomputer 24.Second thread out signal is input to leading shaft motor driver 26 CD-ROM drive motor again.Therefore, video-tape rewinding again.Start sensor 32 detected the leader of video-tape again after video-tape had fallen, thereby sent second initiating signal.Second initiating signal is stop the motor of leading shaft motor driver with the same mode of common video cassette recorder.
When the present invention is applied to video cassette recorder, can handle many video recorders easily.This has just reduced the cost of labor of video center, and in the picture recording chamber, a people must handle many video recorders.Simultaneously, when using a video recorder at home, as long as by next key once, video recorder will also be play subsequently automatically in rewinding, so the use of video recorder seems convenient.
Though the present invention uses specific embodiment to do concrete diagram and explanation, should point out to this professional person, only otherwise deviate from the spirit and scope that appended claim limits, can make all changes in form and details.
Claims (3)
1, a kind of video cassette recorder is characterized in that comprising:
Send the device of rewinding/play signal according to user instruction;
Start sensor sends initiating signal when detecting the image-tape leader;
Microcomputer sends the rewinding control signal and sends the Play Control signal according to above-mentioned initiating signal according to above-mentioned rewinding/play signal;
The leading shaft motor driver drives above-mentioned video-tape according to above-mentioned rewinding control signal or above-mentioned Play Control signal with certain rotating speed;
The audio/video circuit is according to the vision signal and/or the sound signal of the above-mentioned video-tape of above-mentioned Play Control signal reproduction;
Thereby above-mentioned video cassette recorder is according to above-mentioned rewinding/play signal rewinding and from the beginning play automatically according to above-mentioned play signal subsequently, and this play signal by above-mentioned microcomputer according to sending from the detected above-mentioned initiating signal of above-mentioned video-tape the beginning part.
2, by the described video cassette recorder of claim 1, this video cassette recorder also comprises:
Stop sensor, when detecting above-mentioned video-tape latter end, send termination signal; And
Send the device of rewinding control signal according to this termination signal.
3, by the described video cassette recorder of claim 1, this video cassette recorder also comprises the display part, in order to explicit user instruction and above-mentioned video cassette recorder with the corresponding duty of above-mentioned user instruction signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR93-21817 | 1993-10-20 | ||
| KR1019930021817A KR950012375A (en) | 1993-10-20 | 1993-10-20 | VRC's Auto Rewind Play Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1111792A true CN1111792A (en) | 1995-11-15 |
Family
ID=19366217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94116855A Pending CN1111792A (en) | 1993-10-20 | 1994-10-07 | Video cassette recorder with automatic rewind and play function |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07161095A (en) |
| KR (1) | KR950012375A (en) |
| CN (1) | CN1111792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291047A (en) * | 2011-07-09 | 2011-12-21 | 无锡同春新能源科技有限公司 | Circuit device for supplying power to integrated circuit for video recorder by solar photovoltaic power generation system |
-
1993
- 1993-10-20 KR KR1019930021817A patent/KR950012375A/en not_active Application Discontinuation
-
1994
- 1994-10-07 CN CN94116855A patent/CN1111792A/en active Pending
- 1994-10-20 JP JP6255191A patent/JPH07161095A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102291047A (en) * | 2011-07-09 | 2011-12-21 | 无锡同春新能源科技有限公司 | Circuit device for supplying power to integrated circuit for video recorder by solar photovoltaic power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950012375A (en) | 1995-05-16 |
| JPH07161095A (en) | 1995-06-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |