JPH05189702A - Video tape recorder with delay projecting function - Google Patents

Abstract

PURPOSE:To consecutively appreciate projecting information performed after the appreciator leaves his seat in the middle of projection without making a video recording program fall apart and without wasting a tape and electric power. CONSTITUTION:The subject video tape recorder is provided with head cylinders 15 and 16 for video recording and reproducing respectively, a tape guide means 17 for winding a video tape 23 housed in an inserted cassette 21 around both head cylinders 15 and 16 on their outer circumferences and stretching it and pinch rollers 18 and 19 on the video recording side and the reproducing side respectively for synchronously traveling the stretched video tape 23. Moreover, the video tape recorder 2 is provided with a recording and reproducing part 13 equipped with movable guide posts 20a and 20b provided between plural fixed guide posts 19a-19d for guiding the video tape 23 between both head cylinders 15 and 16 in the orthogonal direction to the video tape 23, for reciprocating at the equivalent speed to a tape traveling speed on the basis of recording, reproducing and stopping command signals respectively for controlling both head cylinders 15 and 16 and both pinch rollers 18 and 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video tape recorder with a delayed broadcast function for use with a television.

[0002]

2. Description of the Related Art Today, video tape recorders have become popular in many households and have been used together with televisions to help record television programs and back shows when they are away. By the way, it is a common experience to miss the scene you want to watch because there are visitors while watching TV, or when you can take care of children or go to the bathroom. In such a case, in order to see the scene in the middle stage, the viewer causes the video tape recorder to start recording the video and audio signals from the television when leaving the TV, and ends the recording when returning. Or it is usual to continue recording until the program ends. Then, after the program that was being watched is over, the video tape recorder is rewound and the scene in or after Nakaza is played back for review.

[0003]

However, in the former method of recording and reproducing the missed scene by the above video tape recorder, the former uses less video tape, but
There is a disadvantage that the scene in Nakaza cannot be seen until the end of the program, and if the Nakaza time is prolonged, the flow of program contents cannot be grasped. Also, with the latter method, although the scenes after Nakaza can be viewed continuously by playing after the program ends, the scenes in Nakaza cannot be seen immediately, and there are the same drawbacks as described above. However, there is also a drawback that the recording schedule is out of order due to the large amount of video tapes used.
Therefore, if you try to record and play a missed scene so that you can understand the program content, you have to record the entire program being broadcast on the television on the video tape recorder from the beginning, and if you do so, valuable time, video tape, It will waste power.

Therefore, an object of the present invention is to enable normal recording and reproduction by devising the structure of the video tape recorder, and to keep the video recording schedule of the broadcast information after the middle stage without changing the video recording schedule. Another object of the present invention is to provide a simple and inexpensive video tape recorder with a delayed broadcast function that can be continuously viewed without wasting power and power and can be recorded at the same time.

[0005]

In order to achieve the above object, a video tape recorder with a delayed broadcasting function according to the present invention slides along with a recording head cylinder, a reproducing head cylinder, and a cassette when the cassette is inserted. Tape guide means for winding the video tape housed on the pair of reels around the outer circumferences of both head cylinders and tensioning it, and a pinch on the recording side and the reproducing side for running the tensioned video tape synchronously in the same direction. The head cylinder and the pinch rollers are provided between the roller and a plurality of fixed guide posts that guide the video tape stretched between the head cylinders so as to reciprocate in a direction intersecting with the video tape. A movable guide post that moves forward at a speed corresponding to the tape running speed based on the control recording, reproduction, and stop command signals. · Characterized in that a playback unit.

A recording command button, a reproduction command button, a stop command button for inputting the recording, reproducing, and stop command signals to the video tape recorder with the delayed broadcasting function, a tuner circuit, and an amplifier circuit. , Providing a control circuit,
This control circuit receives a recording command signal from the recording command button, drives both pinch rollers of the recording / reproducing unit, and starts the recording operation of the recording head cylinder, and the video recorded on the video tape, When the beginning of the audio signal reaches the playback head cylinder, only the pinch roller on the playback side is stopped and the forward movement of the movable guide post is started, while the playback command signal from the playback command button is received, or When the movable guide post reaches the end, the movable guide post is stopped, the pinch roller on the reproducing side is re-driven, the reproducing operation of the reproducing head cylinder is started, and the stop command signal from the stop command button is received. The movable guide post is returned to the starting end, the tape is wound, and both head cylinders and both pinch rollers are stopped. Alternatively, the video and audio signals from the tuner circuit may be directly output to the amplifier circuit.

[0007]

First, the pinch rollers on the recording side and the reproducing side are driven by the recording command signal, and the head of the video and audio signals that the recording head cylinder starts recording on the video tape reaches the reproducing head cylinder and the reproducing side cylinder When only the pinch roller stops, the movable guide post between the pair of fixed guide posts between both head cylinders starts to move forward at a speed corresponding to the tape running speed. Then, the video tape on which the video and audio signals have been recorded by the recording head cylinder is successively taken in between the pair of fixed guide posts by the moving movable guide posts even when the pinch roller on the reproducing side is stopped. Next, when the reproduction command signal or the movable guide post reaches the end, the pinch roller on the reproduction side is driven again, and when the reproduction head cylinder starts the reproduction operation, the movable guide post stops. Then, by the playback head cylinder, the image of the part taken in by the following movable guide post in order from the beginning of the video tape,
The audio signal is reproduced and output. Therefore, between the recording command signal and the reproduction command signal, for example, the video and audio signals recorded on the video tape from the tuner circuit via the recording head cylinder are delayed and output to, for example, the television receiver or speaker. .. Further, when both head cylinders and both pinch rollers are stopped by the stop command signal, the movable guide post returns to the original starting end and the tape is wound up, and the operation of the recording / reproducing unit is completed. Therefore, after that, for example, the video and audio signals are directly output from the tuner circuit to the image receiving unit or the speaker of the television without passing through the recording / reproducing unit.

If the recording, reproducing, and stopping command buttons for inputting the recording, reproducing, and stopping command signals, the tuner circuit, the amplifying circuit, and the control circuit are provided in the video tape recorder. The control circuit receives the recording, reproducing, and stopping command signals from the command buttons and controls both head cylinders, both pinch rollers, the movable guide post, etc. as described above, and the operation of the recording / reproducing unit is completed. Then, the video and audio signals from the tuner circuit are directly output to the television receiver or speaker via the amplifier circuit. Therefore, the delayed broadcasting function can be freely activated only by the operator pressing the command buttons.

[0009]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows an example of a video tape recorder with a delayed broadcast function of the present invention used with a television. In the figure, 1 is a television having an input terminal 1a for video / audio signals, and 2 is a video tape recorder provided by connecting an input terminal 1a of the television 1 with an output terminal 2a via a signal line 3. is there. The videotape recorder 2 has command buttons 5, 6 for recording, reproducing, and stopping for inputting command signals for recording, reproducing, and stopping, which will be described later, in addition to the normal operation button group 8'of the VCR. 7
As shown in FIG. 2, a tuner circuit 10, a power supply circuit 11, an amplifier circuit 12, a recording / reproducing unit 13, and these circuits connected to the antenna 9 are provided in a case 4 having a power switch 8 on the front surface. A CPU 14 as a control circuit for controlling based on command signals from command buttons 5, 6, and 7 is housed. Further, on the front surface of the case 4, there is provided a button 8 ″ for freely switching between a delay screen and a real-time screen. The video tape recorder 2 has an input terminal connected to an output terminal of the television 1 via a signal line. However, this is not shown for simplification of description.

As shown in FIG. 2, the recording / playback unit 13 includes a recording head cylinder 15 and a playback head cylinder 1.
6 and tape guide means 17 that slides with the insertion of the cassette 21 and winds the video tape 23 stored in the pair of reels 22a and 22b in the cassette around the outer circumferences of the head cylinders 15 and 16 and stretches the tape. The recording side and the reproduction side pinch rollers 18 and 19 for running the stretched video tape 23 synchronously to the take-up reel 22b side, and the video tape 23 stretched between both head cylinders 15 and 16. Fixed guide posts 19a, 19b, 19c, 1 to guide
The movable guide posts 20a, 20b are provided between 9d so as to be reciprocally movable in a direction substantially orthogonal to the video tape 23, and move forward at a speed corresponding to the tape traveling speed based on a control signal from the CPU 14. Further, a full width erasing head 24 and tension arms 25a and 25b are provided between the recording head cylinder 15 and the delivery reel 22a, and a recording side audio / control head 26 is provided between the recording head cylinder 15 and the pinch roller 18. Playback head cylinder 16
A reproduction side audio / control head 27 is provided between the pinch roller 19 and the pinch roller 19.

The tape guide means 17 is used for the cassette 2.
Three pairs of grooves 28a, 28b, 29a, 29b provided symmetrically from 1 to both head cylinders 15 and 16,
The movable guide posts 31a, 31b, 32a, 32b, 33a, 33b are slidably provided on the respective 30a, 30b. Then, the movable guide posts 31a and 31b are attached to the groove 28.
Moving to the end of a, 28b, the video tape 23 in the cassette 21 is pulled out as shown by the broken line, and then the movable guide posts 32a, 32b move until they come in contact with the stoppers 34a, 34b at the ends of the grooves 29a, 29b. Further, the movable guide posts 33a and 33b move until they come into contact with the stoppers 35a and 35b at the ends of the grooves 30a and 30b, and at that position, the video tape 23 is wound and held around the head cylinders 15 and 16. That is, the video tape 23 is pulled out by the movable guide posts 31a and 31b, and the movable guide posts 32a and 3b are pulled out.
The 2b, 33a, and 33b are designed to perform so-called two-stage loading around the head cylinders 15 and 16. On the other hand, the movable guide posts 20a and 20b are slidably provided in the two parallel grooves 36a and 36b, respectively, to take in the video tape 23 sent from the pinch roller 18 and pull it up, while increasing the tape running speed. It moves forward to the end of the groove at the corresponding speed. The length of each groove 36a, 36b is 30 cm
In this case, the movable guide posts 20a and 20b are sequentially moved to the end of the groove to take in the video tape 23 on which video and audio signals are recorded for about 3 minutes in the triple mode and about 1 minute in the standard mode. You can

On the other hand, the CPU 14 receives a recording command signal from the recording command button 5 and sends a control signal to the switching circuit 37 (see the broken line in FIG. 2), and the tuner circuit 1 up to that point.
0 and the amplifier circuit 12 are disconnected, and the output terminal of the tuner circuit 10 is connected to the recording head cylinder 15 and the input terminal of the amplifier circuit 12 is connected to the reproducing head cylinder 16 as shown by the dashed line in FIG. Let At the same time, by the control signal (see the broken line in FIG. 2), the pinch roller 1 on the recording side and the reproducing side
When both 8 and 19 are driven and the recording operation of the recording head cylinder 15 is started and the beginning of the video and audio signals recorded on the video tape 23 reaches the reproducing head cylinder 16, only the pinch roller 19 on the reproducing side is Is stopped and the forward movement of the movable guide post 20a is started. And
When the movable guide post 20a reaches the end of the groove 36a, it is stopped at this position, and then the movable guide post 20a is stopped.
Start the forward movement of b. Further, when the CPU 14 receives a reproduction command signal from the reproduction command button 6 or when the movable guide post 20b reaches the end of the groove 36b, the movable guide post 36b is stopped at that position, and the pinch roller on the reproduction side. Re-drive 19 and play head cylinder 1
The reproduction operation of 6 is started. Further, the CPU 14 receives the stop command signal from the stop command button 7, rotates the take-up reel, and in conjunction with this, the movable guide post 20.
Both a and 20b are returned to the start ends of the grooves 36a and 36b, both head cylinders 15 and 16 and both pinch rollers 18 and 19 are stopped, and a control signal is sent to the switching circuit 37.
The tuner circuit 10 and the amplifier circuit 12 are connected as before, and the video and audio signals from the tuner circuit 10 are recorded / recorded.
The signal is output directly to the television 1 via the amplifier circuit 12 without passing through the reproducing section 13. Even in this case, the tape guide means 17 remains at the holding position where the video tape 23 is wound around both head cylinders 15 and 16.

The video tape recorder 2 can be used only for recording or reproducing by using the operation button group 8 ', like a normal one. In this case, video tape 2
3 is wound around both head cylinders 15 and 16, and the movable guide posts 20a and 20b are stopped at the start ends,
U14 operates either the recording head cylinder 15 connected to the tuner circuit 10 or the reproduction head cylinder 16 connected to the amplifier circuit 12.

The video tape recorder 2 with the delayed broadcasting function having the above-described structure operates as follows. Now, by inserting the cassette 21 into the recording / reproducing unit 13 of the video tape recorder 2, the video and audio signals from the tuner circuit 10 are directly output to the television 1 through the amplifier circuit 12 to watch the television program. It is supposed to be (see S1 in FIG. 3). At this time, the tape guide means 17 pulls out the video tape 23 from the cassette 21 and feeds it to both head cylinders 15,
Wrap around 16 and hold. When it is necessary to leave the television 1 due to a visitor or an errand during viewing (see S2 in FIG. 3), the viewer presses the record command button 5 on the front surface of the video tape recorder 2 (S3 in FIG. 3). reference). Then,
Upon receiving the recording command signal issued from the recording command button 5, the CPU 14 sends a control signal to the switching circuit 37 to disconnect the tuner circuit 10 and the amplifier circuit 12 and output the output signal of the tuner circuit 10 to the recording head cylinder. 15 and inputs the output signal of the reproducing head cylinder 16 to the amplifier circuit 12
To enter. At the same time, the pinch rollers 18 and 19 on the recording side and the reproducing side are driven synchronously by a control signal, and the recording operation of the recording head cylinder 15 is started, so that the beginning of the video and audio signals recorded on the video tape 23 is When it reaches the reproducing head cylinder 16, only the pinch roller 19 on the reproducing side is stopped and the forward movement of the movable guide post 20a is started. As a result, the recording head cylinder 15
The video tape 23, on which the video and audio signals are recorded by the pinch roller 18, is sent out by the pinch roller 18.
Even when 9 is stopped, the pair of fixed guide posts 1 is moved by the movable guide posts 20a that move forward at the same speed as the delivery speed.
It is pulled up between 9a and 19b and sequentially taken in. The movable guide post 20a stops when it reaches the end of the groove 36a, and then the movable guide post 20b starts to move forward, and when it reaches the end of the groove 36b, recording corresponding to approximately 3 minutes in the triple mode is performed. Captured video tape.

Next, the viewer who has returned to the television 1 after finishing the service or business with the visitor (see S4 in FIG. 3) presses the reproduction command button 6 on the front surface of the video tape recorder 2 (see FIG. 3).
See S5). Then, the CPU 14, which receives the reproduction command signal issued from the reproduction command button 6, stops the movable guide post 36a or 36b in the forward movement at that position, re-drives the pinch roller 19 on the reproduction side, and reproduces the reproduction head. The regeneration operation of the cylinder 16 is started. When the movable guide post 20b reaches the end of the groove 36b, the movable guide post 20b is stopped at that position and the same control is performed. As a result, the reproducing head cylinder 16 reproduces the video and audio signals of the portions captured by the movable guide posts 20a and 20b sequentially from the beginning of the video and audio signal recorded portions of the video tape 23, and passes through the amplifier circuit 12. It is output to the cathode ray tube 1b (see FIG. 1) and the speaker 1c of the television 1. At this time, the recording head cylinder 15
Since the pinch roller 18 on the recording side continues to operate, the broadcast information after returning is also sequentially recorded on the video tape 23 and sent out. Therefore, the viewer can continuously view the broadcast information after leaving the television 1 for a maximum of about 1 minute in the standard mode (see S6 in FIG. 3). That is, the movable guide post 2 of the recording / reproducing unit 13
By the operation of 0a, 20b, etc., it is possible to continuously watch the broadcasting information stored in the video tape 23 in the middle stage with a delay from that in real time.

Finally, the viewer who is watching the television 1 and notices the commercial time longer than the middle time or the end of the program pushes the stop command button 7 on the front of the video tape recorder 2 (S8 in FIG. 3). reference). Then, the CPU 14 that has received the stop command signal issued from the stop command button 7
Attaches the movable guide posts 20a, 20b to the grooves 36a, 36b.
Rapidly return to the start end of both head cylinders 15,1
6 and both pinch rollers 18 and 19 are stopped,
A control signal is sent to the switching circuit 37 so that the tuner circuit 10 and the amplifier circuit 12 are connected to each other as they are.
The video and audio signals from are output directly to the television 1 via the amplifier circuit 12 without passing through the recording / playback unit 13. As a result, the scene currently being broadcasted (real time) that has advanced by a predetermined time (the time from pressing the recording command button 5 to pressing the playback command button 6) than the scene that has been seen until then,
The signal is directly output from the tuner circuit 10 to the cathode ray tube 1b and the speaker 1c of the television 1 without passing through the recording / reproducing unit 13 (see S8 in FIG. 3). Thus, the time delay during Nakaza is
It can be solved by using unnecessary commercial time, and after that, viewers will directly watch real-time broadcast information. If the stop command button 7 is pressed as soon as possible after returning to the television 1, the video tape 23
It is possible to reduce the use amount of.

In the above embodiment, when the recording command button 5 and the reproduction command button 6 are pressed in the same manner as described above and the stop command button 7 is not pressed, all the broadcasting information after the middle seat is within the capacity range of the cassette 21. It can be recorded on the video tape 23. Also,
While pressing the recording command button 5 of the videotape recorder 2 and operating the recording / reproducing unit 13, the real-time broadcast information is viewed through the tuner circuit built in the television 1, and the reproduction command is issued when the scene is missed. If button 6 is pressed, it is possible to immediately re-view the scene before that, which corresponds to approximately 3 minutes in the maximum triple mode. Furthermore, since this video tape recorder 2 can be used only for recording or reproduction as well as a normal one, if it is used together with other video tape recorders, the above-mentioned delayed broadcasting function can be exerted in dubbing and the like, and it is useful. Is high.

As described above, in the present invention, the recording and reproducing head cylinders 15 and 16 and the pinch rollers 18 and 1 are used.
9 and tape guide means 17 and both head cylinders, and movable guide posts 20a, 20b for moving forward at the tape traveling speed to take in the recorded video tape 23 based on the recording, reproducing and stopping command signals. The recording / reproducing unit 13 having a simple structure records the broadcasting information after the middle time on the cassette tape and delays and outputs it to the cathode ray tube and the speaker of the television 1 to display the broadcasting information after the middle time. Since it can be viewed continuously, the method itself is far superior to the conventional recording / playback method using a normal video tape recorder in that the flow of program content can always be grasped, and in addition to various short and long methods. It can flexibly respond to a wide range of hours within a predetermined range, does not disturb the schedule of video recording, can reduce the amount of video tape and power consumption, and aims to reduce the cost of video tape recorders. It is possible. Further, since the ordinary cassette 21 is used as the recording medium without using the endless tape or the like, no special parts are required, and also in this respect, the video tape recorder can be made inexpensive and excellent in versatility.

In the above embodiment, the video tape recorder 2 is used.
In addition to the recording / reproducing unit 13, command buttons 5, 6, 7 for inputting command signals for recording, reproducing, and stopping, a tuner circuit 10, an amplifying circuit 12, and a CPU 14 are provided. The delayed broadcasting function can be freely operated by only pressing each command button of the person, and the functions when shared with the television 1 are expanded, the operability is improved, and there is an advantage that it is very easy to use. The movable guide post of the present invention is not limited to the embodiment 20a, 20b which slides in the two parallel grooves 36a, 36b, but may be one or three or more without grooves. Good. Further, the amount of video and audio signals that can be taken into the movable guide post is not limited to the amount corresponding to the broadcasting time of 3 minutes or 1 minute of the embodiment. Further, the movable guide post of the recording / reproducing section of the present invention is replaced with a memory having no movable section, and the control circuit of the present invention receives both the recording command signal and drives both pinch rollers on the recording / reproducing side to record the image. When the recording operation of the head cylinder is started, the video recorded on the video tape, when the beginning of the audio signal reaches the playback head cylinder, the video from the running video tape,
When audio information is recorded in the memory and a playback command signal is received, or when the amount of stored information reaches the memory capacity,
When the above video and audio information is read from the memory and output to the amplifier circuit, and when the stop command signal is received, the memory is cleared, both head cylinders and both pinch rollers are stopped, and the video and audio signals from the tuner circuit Can be directly output to the amplifier circuit.

As is apparent from the above description, the video tape recorder with the delayed broadcasting function of the present invention has head cylinders for recording and reproducing and a video tape housed in the inserted cassette in both head cylinders. Tape guide means wound around the outer circumference of the tape and stretched, recording-side and playback-side pinch rollers for synchronously running the stretched video tape, and a plurality of fixed guides for guiding the video tape between both head cylinders A movable guide post that is installed between the posts in a direction that intersects the video tape and that moves forward at the same speed as the tape running speed based on the recording, reproducing, and stop command signals that control both head cylinders and both pinch rollers. Since it has a recording / playback unit equipped with, it is possible to continuously watch the broadcast information after the time of the middle stage by delaying the broadcast, in addition to the conventional recording and playback functions. The flow of the video can be always grasped, the video recording schedule is not disturbed, the video tape and power consumption can be reduced, and no special cassettes or parts are required, so the video tape recorder can be made inexpensive and the versatility is improved. Can be planned. If each command signal input button for inputting each command signal to the above video tape recorder, a tuner circuit, an amplifier circuit, and a control unit are provided, the operator can freely operate the delayed broadcasting function by pressing a button. Therefore, it is possible to further expand the functions and improve the operability.

[Brief description of drawings]

FIG. 1 is a perspective view showing a video tape recorder with a delayed broadcast function of the present invention used with a television.

FIG. 2 is a detailed view showing the video tape recorder of FIG.

FIG. 3 is a flowchart showing a flow of operations of the video tape recorder.

[Explanation of symbols]

1 ... Television, 2 ... Video tape recorder, 5 ... Recording command button, 6 ... Reproduction command button, 7 ... Stop command button, 10 ... Tuner circuit, 12 ... Amplification circuit, 13 ... Recording / reproducing section, 14 ... CPU, 15 ... Recording head cylinder,
16 ... Reproducing head cylinder, 17 ... Tape guide means,
18, 19 ... Pinch rollers, 20a, 20b ... Movable guide post, 21 ... Cassette, 22a, 22b ... Reel, 23 ...
video tape.

Claims (2)

[Claims] 1. A recording head cylinder, a reproducing head cylinder, and a video tape, which slides as a cassette is inserted and is stored in a pair of reels in the cassette, are wound around the outer circumferences of both head cylinders and stretched. Tape guide means, recording side and playback side pinch rollers for running the stretched video tape synchronously in the same direction, and a plurality of fixed guide posts for guiding the video tape stretched between both head cylinders. Between the video tape and the video tape, and is reciprocally movable between them, and forwards at a speed corresponding to the tape running speed based on the recording, reproducing, and stop command signals for controlling the head cylinders and the pinch rollers. A video tape recorder with a delayed broadcast function, which is provided with a recording / playback unit having a movable guide post that moves. 2. A recording command button, a reproduction command button, a stop command button, a tuner circuit, an amplifier circuit, and a control circuit for inputting the respective recording, reproducing, and stop command signals are provided. In response to the recording command signal from the recording command button, drive both pinch rollers of the recording / playback unit, start the recording operation of the recording head cylinder, and start the video and audio signals recorded on the video tape. When it reaches the playback head cylinder, only the pinch roller on the playback side is stopped and the movable guide post starts to move forward, while the playback command signal from the playback command button is received, or the movable guide post moves When the end is reached, the movable guide post is stopped, the pinch roller on the reproducing side is re-driven, and the reproducing operation of the reproducing head cylinder is started. When a stop command signal from the command button is received, the movable guide post is returned to the start end and the tape is wound at the same time, both head cylinders and both pinch rollers are stopped, and the video and audio signals from the tuner circuit are directly amplified. The video tape recorder with a delayed broadcast function according to claim 1, wherein the video tape recorder outputs it to a circuit.