KR100205864B1 - High speed rewinding method by a sensor of reel - Google Patents

Abstract

The present invention relates to a high-speed rewinding method for implementing a single reel sensor for smoothly performing a high-speed rewinding operation of a TVCR or a VCR even when a high-speed rewinding is implemented with a single reel sensor in a TVCR or a VCR. VCR has to be equipped with two reel sensors that can detect the condition of the video tape when performing fast rewind operation, which is a complicated factor in manufacturing while increasing the price, and also supply reel sensor and take-up reel sensor The capacity of the microcomputer to calculate the type and area of the videotape according to the constant sensing signal detected and output from the system must be very large. Since the time cannot be determined by itself, the user directly selects and controls the functions described above in the microcomputer. Therefore, there was an uncomfortable problem that a fast rewind is performed.

Therefore, the present invention provides a method to implement a high-speed rewind with one reel sensor to solve this problem, so that even if the video tape of the type and area and the running time different from each other is inserted into the technology of the VCR to recognize the TV or High speed rewind (HI REW) is realized by using one reel sensor that can not only perform the high speed rewinding operation of the VCR smoothly but also reduce the cost. Way.

Description

High reel method with one reel sensor

1 is a block diagram showing the structure of a general VCR

2 is a flow chart illustrating a method of fast rewinding using a single reel sensor of the present invention.

* Explanation of symbols for main parts of the drawings

1: key input 2: supply reel

3: supply reel sensor 4: take-up reel

5: take-up reel sensor 6: microcomputer

7: Servo control unit 8: Driving unit

9: capstan motor 10: capstan

11: drum motor 12: drum

13: head 14: image processing unit

15: CPT

The present invention relates to a high-speed rewinding method of implementing a single reel sensor for smoothly performing a fast rewinding operation of a TV or a VCR even when a high-speed rewinding is implemented with one reel sensor in a TV or a VCR. .

1 shows a structure of a general VCR, a key input unit 1 for outputting a predetermined control signal for operating a VCR according to a user's key operation, and a video tape into a VCR deck when a video tape is inserted into a VCR technology. A supply reel 2 for supplying a supply, a supply reel sensor 3 for detecting a video tape supplied by the supply reel 2, and outputting a constant detection signal, and the supply reel sensor 2 A take-up reel 4 for driving the video tape according to the output constant signal, a take-up sensor 5 for outputting a constant detection signal while detecting the video tape driven by the take-up reel 4; Recognizing the state of the video tape according to the constant sensing signal sensed and output by the supply reel sensor 3 and the take-up reel sensor 5, and outputs the constant control signal output from the key input unit 1. And a servo controller 7 for outputting a control signal for rotating the capstan motor 9 and the drum motor 11 according to the control of the microcomputer 6; And a driving unit 8 for rotating the capsdon motor 9 and the drum motor 11 at a constant speed according to the control signal output from the shear control unit 7, and a constant speed under the control of the driving unit 8. A capstan motor 9 rotating at a speed of rotation, a capstan 10 rotating by a rotational force of the capstan motor 9 to convey a video tape, and a drum motor rotating at a constant speed under the control of the driving unit 8 ( 11), a drum 12 which rotates at a constant speed by the rotational force of the drum motor 11, a head 13 which detects a video signal recorded on a video tape according to the rotation of the drum 12, The image signal detected by the head 13 is converted into a luminance signal (Y) and a color signal (C). And a CPT (Color Picture Tube) 15 for displaying the luminance signal Y and the color signal C outputted from the image processor 14 on the screen. As the configuration, the operation thereof is as follows.

First, when the user inserts the video tape into the VCR to play a constant image recorded on the video tape while the power is applied, the inserted video tape is supplied to the inside of the VCR deck by the supply reel 2 while supplying the reel. The reel sensor 3, which is detected by the sensor 3, outputs a constant detection signal that detects the supplied video tape to the microcomputer 6.

Then, the video tape supplied by the supply reel 2 is driven so as to be wound by the take-up reel 4 to the drum 12 in the VCR deck, and the driven video tape is taken up by the take-up reel sensor 5. In this case, the take-up reel sensor 5 outputs a constant detection signal that detects the video tape to be driven to the microcomputer 6.

At this time, when the user operates the key input unit 1 and outputs a predetermined control signal for operating the VCR to the microcomputer 6, the microcomputer 6 supplies the supply reel sensor 3 and the take-up reel sensor 5. In the VCR deck, the video tape supplied by the supply reel 2 and the take-up reel 4 can be watched while the state of the video tape is recognized by the constant sensing signal detected and output by the monitor. The beam control unit 7 outputs a control signal for controlling the capstan motor 9 and the drum motor 11.

Therefore, the servo controller 7 outputs a control signal for controlling the capstan motor 9 and the drum motor 11 to the driving unit 8 according to the control signal output from the microcomputer 6. In addition, the driving unit 8 drives the capstan motor 9 and the drum motor 11 according to the control signal output from the servo controller 7.

In addition, the capstan motor 9 and the drum motor 11 rotate the capstan 10 and the drum 12 while rotating according to the driving control of the driving unit 8, respectively, and in the rotating drum 12, the supply reel. 2 and the take-up reel 4 are wound to reproduce the wound video tape, and the capstan 10 transfers the video tape wound on the drum 12 at a constant speed.

At this time, the video tape wound on the drum 12 and conveyed at a constant speed according to the rotation of the capstan 10 is detected by the video signal recorded according to the reproduction operation of the head 13, and the detected video signal is an image processor. It is outputted to 14.

Thereafter, the image processor 14 separates the luminance signal () and the color signal () from the detected image signals and outputs the image to the CPT (15), and the image processor (14) in the CPT (15). By reproducing and outputting the predetermined image information of the video tape separated and processed by the image), the user can view the image information recorded on the video tape.

On the other hand, if the user outputs a predetermined control signal to the microcomputer 6 through the key input unit 1 to rewind the video tape on which the video information was reproduced at high speed, the microcontroller 7 controls the servo controller 7 in the microcomputer 6. By controlling the operation of the servo control unit 7, the capstan motor 9 and the drum motor 11 stops the rotation operation.

Therefore, the playback operation of the video tape of the VCR currently in progress in accordance with the stop of the rotation operation of the capstan motor 9 and the drum motor 11 is stopped while the microcomputer 6 is operated in accordance with the constant control signal output from the key input unit 1. ) Controls Syschem to perform a fast rewind operation of the videotape.

That is, in the microcomputer 6, the type and the area of the video tape supplied and wound to the head 12 according to the constant sensing signal detected and output by the supply reel sensor 3 and the take-up reel sensor 5 may be used. The fast rewind operation of the video tape is performed while performing the operation of calculating.

However, the above-described VCR has to be provided with two reel sensors capable of detecting the state of the videotape when performing the fast rewinding operation, which is a complicated factor in manufacturing while being a price increase factor, and also a supply reel sensor and take The capacity of the microcomputer to calculate the type and area of the videotape according to the constant sensing signal detected and output by the up-reel sensor must be very large, and the running time of the videotape, that is, the Since the running time of the videotape cannot be determined by itself, there is an inconvenient problem that the fast rewinding is performed by the user directly selecting and controlling the functions described above in the microcomputer.

Therefore, the present invention provides a method to implement a high-speed rewind with one reel sensor to solve this problem, so that take-up reel when the video tape of the type and area and travel time different from each other is inserted into the technology of the VCR When the sensor detects this and outputs the detected signal to the microcomputer, the microcomputer recognizes the state of the video tape and performs the fast rewind operation of the TV or VCR. Even the purpose is to make the product very easy.

In order to achieve the above object, a high-speed rewinding method implemented by one reel sensor of the present invention includes a first process of determining whether a key signal is input to rewind a video tape, and a key signal for rewinding the video tape as a result of the determination. Is input, a second process of rewinding the video tape at a constant speed, a third process of determining whether the stabilization time has elapsed, and a predetermined number of capstan face generators CFG when the stabilization time has elapsed (CFG94). The fourth step of judging whether it is abnormal, and if the capstan phase generator generator (CFG) is not more than a certain number (CFG94), it is set as a standard. T (Time) 90] and the fifth step of setting and executing the fast rewind (Hi REW) and the fifth step If it capstan from an executed fast reverse Phaser generators (CFG) is smaller than the specified number (CFG12), and in that characterized in that it comprises a sixth step after stopping the operation of the fast reverse and run a standard rewind to set to a constant speed.

Referring to the operation of the high-speed rewind method implemented in one of the present invention reel sensor configured as described above are as follows.

First, when the user inserts the video tape into the VCR to play a constant image recorded on the video tape while power is applied, the inserted video tape is supplied into the VCR tech by the supply reel 2, and the The video tape supplied by the supply reel 2 is traveled to be wound by the take-up reel 4 to the drum 12 in the VCR deck, and the driven video tape is driven by the take-up reel sensor 5. In this case, the take-up reel sensor 5 outputs a predetermined detection signal that detects the video tape to be driven to the microcomputer 6.

At this time, when the user manipulates the key input unit 1 and outputs a predetermined control signal for operating the VCR to the microcomputer 6, the microcomputer 6 detects and outputs the constant up-down reel sensor 5. Capstan to the servo control unit 7 in the VCR deck to view the video information of the video tape supplied and wound by the supply reel 2 and take-up reel 4 while recognizing the state of the video tape by the signal. A control signal for controlling the motor 9 and the drum motor 11 is output.

Therefore, the servo controller 7 outputs a control signal to the driver 80 to control the motors 9 and 11 more precisely according to the control signal output from the microcomputer 6, and the driver 8. In operation, the capstan motor 9 and the drum motor 11 are driven in accordance with the control signal output from the servo controller 7.

In addition, the capstan motor 9 and the drum motor 11 rotate the capstan 10 and the drum 12 while rotating according to the driving control of the driving unit 80, respectively, and in the rotating drum 12, the supply reel ( 20) and the take-up reel 4 is wound to reproduce the wound video tape, the capstan 10 is to transfer the video tape wound on the drum 12 at a constant speed.

At this time, the video tape recorded on the drum 912 and conveyed at a constant speed according to the rotation of the capstan 10 is detected according to the playback operation of the head 913, and the detected video signal is detected by the image processing unit ( 14).

Thereafter, the image processor 14 separates the luminance signal Y and the color signal C from the detected image signals and outputs the image to the CPT 15 by image processing. By reproducing and outputting the predetermined video information of the video tape separated and processed by 14, the user can watch the video information recorded on the video tape.

On the other hand, if the user outputs a predetermined control signal to the microcomputer 6 through the key input unit 1 to rewind the video tape on which the video information was reproduced at high speed, the microcomputer 6 at the key input unit 1 The servo controller 7 controls the operation of the servo controller 7 while recognizing the output constant control signal.

At this time, the servo controller 7 stops the forward rotation operation of the capstan motor 9 and the drum motor 11 according to the control signal output from the microcomputer 6.

Therefore, the playback operation of the video tape of the VCR currently in progress is stopped in response to the stop of the forward rotation operation of the capstan motor 9 and the drum motor 11, while the microcomputer according to the constant control signal output from the key input unit 1 is stopped. In (6), the system is controlled to perform a video tape rewind (REW) operation in the VCR.

That is, the microcomputer 6 calculates the type and area of the video tape supplied and wound to the head 12 according to the constant sensing signal detected and output by the take-up reel sensor 5. Then, it is determined whether to rewind the video tape at a constant speed.

When the video tape is rewinded at a constant speed, the microcomputer 6 determines whether the capstan phase generator generator CFG is less than or equal to the predetermined number CFG15 within the cycle of the take-up reel sensor 5. The capstan 10 is set to a rewind rotational operation to rewind the video tape to normal.

When the video tape is not rewinded at a constant speed according to the above-described determination result, after the rewinding operation of the video tape is stabilized for a predetermined time, the microcomputer 6 takes a capstan in a take-up reel sensor 50 within a cycle. It is determined whether the pager generator CFG is above a certain number CFG94.

That is, if the capstan phase generator generator CFG is not larger than the predetermined number CFG94 in the cycle of the take-up reel sensor 5, the capstan 10 may be rewound. If the rewind rotation operation is set and the capstan phaser generator CFG is equal to or greater than a certain number CFG94 in the cycle of the take-up reel sensor 5, the running period of the video tape is equal to or greater than a predetermined time [T (Time) 90]. Recognizing that, the microcomputer 6 controls the servo control unit 7 to rewind the video tape at high speed, and the servo control unit 7 controls the driving operation of the driving unit 8, thereby driving the drive unit. The capstan motor 9 and the drum motor 11 rewind and rotate according to the control of (8). At this time, the capstan 10 and the drum 12 execute the video tape with high speed rewind, and then the high speed rewind. As thread The rewind rotational motion of the capstan 10 performed is set.

In addition, in the fast rewinding performed by the above-described processes, the take-up reel sensor (within 50 cycles of capstan phaser generator CFG is less than a certain number CFG12), and after stopping the fast rewinding operation of the video tape. By setting the rewind of the video tape at a constant speed while executing a standard rewind, a high-speed rewind of the video tape is realized by one take-up reel sensor 50.

As described above, the present invention provides a method for implementing a high-speed rewind with a single reel sensor, so that even if a video tape having a different type and area and a running time is inserted into the tech of the VCR, the high-speed rewind of a TV or a VCR is recognized. Not only can the operation be performed smoothly, but also cost can be achieved in terms of cost, and the product can be produced very easily in production.

Claims (1)

A first process of judging whether a key signal has been input to rewind the video tape, a second process of inputting a key signal for rewinding the video tape as a result of the determination, and a second process of rewinding the video tape at a constant speed, and A third process of driving at a constant speed until stability and time elapses, and a fourth process of determining whether a capstan page generator (CFG) is a predetermined number (CFG94) or more within a cycle of the take-up reel sensor when the stabilization time has elapsed; If the result of the determination is that the capstan phaser generator (CFG) is not more than a certain number (CFG94), the standard setting is set. The fifth step of setting and then executing the fast rewind; and the capstan phaser gener at the fast rewind performed by the fifth step. If the CFG is less than the predetermined number CFG12, a fast rewind is realized by including a sixth process of stopping the operation of the fast rewind and then performing a standard rewind and setting the speed to a constant speed. (HI REW) method.