JPS63293781A - Disk cleaning adaptor system - Google Patents

Abstract

PURPOSE:To execute and decide cleaning by providing the titled system with a cleaning means for pressing a foreign substance (FS) detecting signal sensor on a soft disk plate to the disk plate with forced pressure and sending a sensor control signal for removing the FS to a control microcomputer circuit. CONSTITUTION:The system is provided with a deciding means for receiving a recording signal recorded on the soft disk plate and sent from a detecting signal sensor (reproducing stylus) fitted to a pickup arm 2 in a soft disk reproducing machine through a signal processing circuit 1 and deciding the presence or absence of an FS on the soft disk plate, the cleaning device for forcedly pressing the sensor to the FS on the disk plate confirmed by the deciding means and sending a sensor control signal for removing the FS to the control microcomputer circuit 8 and a control signal generating means for outputting a command signal for processing operation to a display microcomputer circuit. Consequently, the FS can be simply removed and its completement can be checked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a disc cleaning adapter system that automatically cleans a soft disc using a soft disc player.

(Prior art) In general, video discs, PCM audio discs, etc. have minute signal bits recorded on the soft disc surface, and when the disc is played back, the signal detection sensor of the playback device moves on the soft disc surface, which rotates at high speed. Signals are read by tracing signal bits. In this case, if there is a convex part on the surface of the soft disk due to foreign matter such as a lump attached to the surface of the soft disk, signal detection will be interrupted and the signal detection sensor itself will not be able to move normally. As a result, signal detection becomes discontinuous.

Therefore, when playing back a soft disk, it is necessary to prevent foreign matter such as dust and dirt from adhering to the recording surface of the soft disk as much as possible.

In addition, as a means for cleaning the sensor and the surface of the soft disc, a method of wiping it off using a special cloth and chemicals is generally used. However, with this method, the size of the foreign object that affects the signal detection of the soft disk is several micrometers.
Because of the unit size, cleaning of the soft disk is incomplete with human visual inspection or manual work. Even the incomplete or incomplete leaning work described above required a lot of time, advanced technology, and experience.

Also, using a dedicated machine for thorough cleaning requires a large investment.

In addition, in the case of a soft disc such as a video disc, by configuring the soft disc to be inserted into or taken out from the playback device while being stored in a jacket case, it is possible to prevent foreign matter from forming on the recording surface of the soft disc. Techniques are being implemented to prevent adhesion as much as possible.

Therefore, even if foreign matter adheres to the recording surface of the soft disc, the soft disc will be inserted into the jacket case when not playing, and will be automatically taken out from the jacket case during playback and installed in the playback device. Since the device is placed on a turntable, it is extremely difficult to detect the foreign object with the naked eye.

Also, since the structure is such that the user cannot take out the soft disc from the jacket case,
It is difficult for a user to regularly clean the recording surface of the soft disc, which may have foreign matter attached to it.

(Problems to be Solved by the Invention) As described above, it is impossible to completely remove foreign substances such as dust and dirt on the surface of a soft disc by human visual inspection or by hand. Furthermore, since a video disc has a jacket case, it is difficult for a typical user to remove the recording disc. Moreover, using a dedicated cleaning machine requires a lot of cost.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a disc cleaning adapter system that can easily remove foreign matter using a conventional soft disc player, and at the same time check and remove all the dust.

[Structure of the Invention] (Means for Solving the Problem) The present invention provides a recording signal on a soft disc that is sent from a detection signal sensor attached to a pickup arm of a soft disc player via a signal processing circuit. a microcomputer that controls a sensor control signal that forcibly presses the sensor against the foreign object on the soft disk confirmed by the judgment means to remove the foreign object. A microcomputer that controls a cleaning means that sends out a command signal to the circuit, and a command signal that repeats the cleaning means and judgment means until foreign matter is removed or a preset number of times, and a microcomputer that displays command signals for processing operations. The control signal generating means is equipped with control signal generating means for outputting to the circuit.

(Function) The location of the foreign object on the soft disc can be determined from the recording signal sent from the signal detection sensor attached to the pickup via the signal processing circuit, and the signal detection sensor detects the location of the foreign object at the location determined above. When pressure is applied forcibly, the soft disk rotates, so the foreign matter can be pushed out to another location or scraped off and removed.

By repeating the above steps, the top of the soft disc will be thoroughly cleaned.

(Example) Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 is a system configuration diagram showing an embodiment of a disk cleaning adapter system according to the present invention. In this embodiment, a video disc will be described, but the present invention is not limited to this.

In FIG. 1, explanation will be given first from the player side A. The signal processing circuit 1 reproduces signals recorded on a soft disc detected by a sensor (reproduction needle) attached to a pickup arm 2, and outputs video and audio signals to a monitor TV 3.

It also demodulates the address code signal and reproduces the synchronization signal, and outputs it to the address code processing circuit 4. At the same time, the reproduced synchronization signal is also output to the changeover switch 5 of the on-screen character generation circuit 6.

The address code processing circuit 4 demodulates the address signal input from the signal processing circuit 1 and synchronizes it with a clock pulse, and sequentially displays it as an address code signal in the microcomputer circuit 7.
and control microcomputer circuit 8 and external control connector 9. It is output to the dirt determination circuit 25 via the amplifier 27.

Next, the display microcomputer circuit 7 receives the key input signal from the key 16 and the external ll1wJ connector 9. It receives an external command signal from the amplifier 29 and an information signal (sub-status) for the display microcomputer circuit 7 from the IIJIm microcomputer circuit 8, processes them, and sends them as a character data signal to the on-screen character generation circuit 6. At the same time, the command signal is output to the control microcomputer circuit 8.

In addition to the address code signal and external command input signal, the control microcomputer circuit 8 receives a pickup arm position detection signal from the detection switch 14, a rotation detection signal from the turntable circuit 15, and various signals from the synchronization signal generation circuit 10. It receives the synchronization signal and performs various processes, and sends the information signal (sub-status) to the display microcomputer circuit 7, the mode selection signal to the address code processing circuit 4, and the arm sending circuit 12 to move the arm forward, backward, etc. An arm feed signal, a needle (sensor) control signal to the needle (sensor) control circuit 11 that increases the pressure of the needle (sensor) during lifting and lowering of the needle (sensor) relative to the soft disk, and during cleaning, a tracking circuit 13, and a needle (sensor) control signal, etc. , a rotation control signal to the turntable circuit 8, and a status signal via the external III control connectors 9 and 7.

The tracking circuit 13 controls the needle (sensor) to accurately follow the track of the soft disc, and also outputs an fp3 pulse signal to the synchronization signal generation circuit 10.

The synchronization signal generation circuit 10 outputs various synchronization signals such as color subcarrier signals, H, V synchronization signals, and fp3 pulse stabilization signals to the control microcomputer circuit 8, and also outputs the on-screen character generation circuit of the changeover switch 5. A composite synchronization signal is output to the terminal on the 6 side.

The on-screen character generation circuit 6 outputs character signals such as chapter Nα and double speed value to the signal processing circuit 1 according to instructions from the display microcomputer circuit 7.

This character signal output is synthesized with the disc playback signal in the signal processing circuit 1 and displayed.In order to synchronize with the playback video signal at the time of image output, the playback synchronization signal from the signal processing circuit separated from the video signal is vertically separated. .

Although it is inputted as horizontal noise removal H, at the time of squelch, the changeover switch 5 is connected to the composite synchronization signal from the synchronization signal generation circuit 10 and inputted. Further, the power supply 17 is a common power supply for the reproducing machine, and also provides an output of +81 to the external control connector 9.

Next, the adapter B side will be explained.

The control signal generation circuit 21 receives a reset signal from the reset switch 23 to initialize the cleaning and stop the operation, a start signal from the start switch 22 to start the operation, and a mode selection switch 24 to determine the set mode. When the mode judgment signal from the circuit 34 and the status signal output informing the operating state of the control microcomputer 8 are received via the connector 9 and the amplifier 28, the speed of the soft disk is doubled based on the processing order set in advance in the mode judgment circuit 34. Amplifier 29. Command signals such as value, forced sweep, sensor cleaning, character display, etc. It is output to the display microcomputer circuit 7 and vUIll microcomputer circuit 8 via the connector 9. In addition, the status signal is sent from the control microcomputer circuit 8 to the connector 9. The signal is received via the amplifier 28 to check the processing operation on the playback machine side, and also outputs an operation/signal to the dirt determination circuit 25. The dirt determination circuit 25 receives the address code signal from the address code processing circuit 4 from the connector 9. The address code signal is received via the amplifier 27, and the number of detected address code signals and the frequency of undetected address code signals are detected to determine the degree of dirt on the soft disk, and a dirt determination signal is output to the i control signal generation circuit 21. do. Furthermore, the indicator lamps 30, 31, 33 and the buzzer 32 are activated depending on the degree of dirt. Further, the control circuit 20 receives a clock signal from the control microcomputer 8 via the connector 9 and the amplifier 26, and transmits the clock signal to the dirt determination circuit 25 and υ
1111 signal generation circuit 21.

Next, the cleaning flow of the cleaning adapter system will be explained.

First, the soft disk to be cleaned is inserted into the playback machine and played back at normal speed (1x speed), and the degree of dirt is determined by looking at the appearance of noise in the playback image on the monitor TV 3. Then, the mode changeover switch 24 is used to set a cleaning processing mode that matches the degree of dirt. There are 1 to 4 processing modes, and mode 1 is 61x forced sweep/61x check/17x check, mode 2 is 61x forced sweep/61x check, and mode 3 is 17x forced sweep/17x check. , Mode 4 consists of a 17x speed check. here 6
1x speed and 17x speed indicate speeds that increase the processing time by skipping information recording tracks on the soft disc. At 61x speed, the N111 microcomputer circuit 8 of the playback IA uses a command from adapter B to skip the information recording tracks on the soft disc.
The needle (sensor) control circuit 11, the tracking circuit 13, and the arm feeding circuit 12 are controlled so as to kick (move) the sensor or the pickup arm 2 to which the sensor is attached 60 times during rotation. Furthermore, at 17x speed, the soft disk is kicked (moved) 16 times during one rotation, as described above.

The forced sweep means that the control microcomputer circuit 8 outputs a signal to the control circuit 11 to forcibly apply pressure to the sensor on the soft disk rotating on the turntable. A control command that performs cleaning to remove or scrape off foreign matter that is the source of dirt, and also takes out the recording signal.Checking is a control command that performs the forced sweep or cleaning and replays the recording signal to automatically check and judge the dirt determination circuit 25. This is a processing instruction that repeatedly displays or outputs the results to the outside.

In addition, as an external display or output, the RUN indicator lamp 33 lights up after the start switch is turned on, and the "OK" indicator lamp 30 lights up and the buzzer 3 lights up when cleaning is completed.
There are two operations: one in which the NG indicator lamp 31 is turned on in the case of a failure (NG), and the other in which the buzzer 32 beeps twice.

FIGS. 2 to 4 are flowcharts showing a series of cleaning steps according to an example of mode selection of the cleaning adapter system.

As shown in FIGS. 2 to 4, when the start switch 22 of the adapter 8 is turned on (reference numeral 51), the control signal generation circuit 21 transfers the cleaning mode signal set to the mode changeover switch 24 to the mode determination circuit 25. Receive more. Based on the mode signal, the control signal generation circuit 21 outputs a command signal to the display microcomputer circuit 7 and control microcomputer circuit 8 to perform sensor cleaning three times by rubbing the body of the sensor (needle) against a brush (not shown). along with R to the dirt determination circuit 25.
A control signal for lighting the UN indicator lamp 33 is output.

The control microcomputer circuit 8 outputs a control signal to the needle (sensor) control circuit 11 and arm feed circuit 12 based on the command signal, and performs sensor cleaning three times (reference numeral 5).
2).

The control signal generation circuit 21, which has received the status signal indicating the end of sensor cleaning from the control microcomputer circuit 8, sends a command signal to perform a forced sweep at 61x speed and display an address code on the monitor page, which is the next operation procedure after the above-mentioned mode signal. 1IIJaDI icon circuit 8 and display microcomputer circuit 7.

ill m microcomputer circuit 8 is needle (sensor) control circuit 1
1 applies pressure to the sensor and outputs a signal to forcibly sweep the soft disk, and also outputs a kick pulse signal etc. associated with 61 times speed to the arm feed circuit 12 and tracking circuit 13. At this time, the address code processing circuit 4 outputs the address code signal recorded on the soft disc to the dirt determination circuit 25. The dirt determination circuit 25 detects the number of detected address code signals and the frequency at which they are not detected, determines the degree of dirt on the disk, and outputs this dirt determination signal to the control signal generation circuit 21 (reference numeral 53). Here, the dirt judgment circuit 25 is NG.
If the judgment is that the soft disc is defective, then it is judged again how much dirt or scratches are on the soft disk and whether it is the whole or part of the dirt is used as a dirt judgment signal to the control signal generation circuit. 21 (numeral 54). The control signal generation circuit 21 that has received this signal completes the work in the case of the entire operation and outputs a control signal to turn on the NG lamp 31 to the dirt determination circuit 25 (reference numeral 55).

In addition, if there is a partial defect (contamination or m>), a command signal is output to the III control microcomputer circuit 8 and the display microcomputer circuit 7 to perform still playback for about 3 minutes at a location where the defect is dirty or normal playback after that, and then to the contamination judgment circuit. A control signal for operating the NG lamp 31 and buzzer 32 is output (numeral 56).

The control signal generation circuit 21, which has received the OK dirt determination signal from the dirt determination circuit 25, then outputs a command signal for performing sensor cleaning once to the display microcomputer circuit 7 and the control microcomputer circuit 8 (reference numeral 57).

The control signal generation circuit 21 receives the status signal indicating completion of sensor cleaning from the control microcomputer circuit 8, and the control signal generation circuit 21
A command signal is sent to the control microcomputer circuit 8 and the display microcomputer circuit 7 to detect the recording signal on the soft disk at double speed and to display the chapter NQC example of the detected signal (example: what song) and 61X (61x speed) on the monitor screen. Output. At this time, the dirt determination circuit 25 receives the address code signal from the display microcomputer circuit 7 until the end of the operation command and judges the degree of dirt, and also detects the permutation of the address code signals to determine where the dirt is most severe. Check and record. The status signal indicating completion of confirmation work at 61x speed is 11111 from the microcomputer circuit 8 to the control signal generation circuit 2.
1, the dirt determination circuit 25 outputs a dirt determination signal to the control signal generation circuit 21 (reference numeral 58). If the dirt determination circuit 25 makes a determination of NG (defective) here,
The stain determination circuit 25 again determines the size of the stain or scratch. If it is determined that the dirt or scratches are large, the process moves to 54. In other cases, O
The K dirt determination signal is output to the control signal generation circuit 21 (
code 59). Then, the II low signal generation circuit 21 outputs a command signal to perform sensor cleaning once to the control microcomputer circuit 8 and the display microcomputer circuit 7 (symbol 6
0),! The control signal generating circuit 21, which has received the status signal indicating completion of sensor cleaning from the I11 control microcomputer circuit 8, uses the dirt determination signal to issue a command signal for cleaning work, that is, a forced sweep, from Chapter Co., Ltd. to the heavily soiled area to the control microcomputer circuit 8 and the display microcomputer. It is output to the circuit 7 (symbol 61). 6 again like code 58
Confirmation is performed at 1x speed (symbol 62). At this time, if the contamination determination circuit makes an NG (defective) determination, the control signal generation circuit 21 can repeat commands from 60 to 62 up to 10 times, but at the 11th time, the process moves to 54. (Symbol 63).

The control signal generation circuit 21 outputs a command signal for performing sensor cleaning once to the control microcomputer circuit 8 and the display microcomputer circuit 7 (reference numeral 64).

Next, perform precision leaning at 17x speed, but this 1
At 7x speed, there is a characteristic that the track passes through a different part from the part passed at 61x speed. The υ1wJ signal generation circuit 21, which has received the status signal indicating the completion of sensor cleaning from the control microcomputer circuit 8, sends a command signal for cleaning at 17x speed, that is, a forced sweep while applying pressure to the sensor, to the control microcomputer circuit 8 and the display microcomputer circuit 7. Output (symbol 65).

The control signal generation circuit 21 receives the status signal indicating completion of forced sweep at 17x speed from the control microcomputer circuit 8.
A command signal for detecting recording signals of the soft disc at 17x speed is output to the control microcomputer circuit 8 and the display microcomputer circuit 7. If the contamination determination signal output by the contamination determination circuit 25 is NG (defective) in this 17x speed check, the control signal generation circuit 21 sends the i-control control microcomputer 2 road 8 and display microcomputer circuit 7 to check. Outputs a command signal to stop the machine and display the address code of the defective location on the monitor screen. Further, the dirt determination circuit determines defective locations and records the defective locations (reference 66).

The control signal generation circuit 21 outputs a command signal for causing the control microcomputer circuit 8 and the display microcomputer circuit 7 to perform sensor cleaning once (reference numeral 67).

The control signal generation circuit 21, which has received the status signal indicating completion of sensor cleaning from the control microcomputer circuit 8, sends a command signal for detecting the recording signal on the soft disk at 17 times the speed from the address of the defective part to the control microcomputer circuit 8 and the display microcomputer. Output to circuit 7. At this time, the contamination determination circuit 25 and the control signal generation circuit 21 are connected to the control microcomputer circuit 8 and A command signal is output to the display microcomputer circuit 7 to stop the checking operation and to display the address code of the defective location on the monitor screen. The dirt determination circuit 25 also records the address code of the defective location. (Symbol 68).

If the contamination determining circuit 25 determines that the contamination is defective (NG), the control signal generating circuit 21 outputs the code 67.0 up to 10 times.
Although the command 68 can be repeated, the process moves to 54 for the 11th time (69).

If the stain determination signal is OK at 68, the control signal generation circuit 21 repeats the defective (NG) portion recorded at 66 and 68 in the stain determination circuit 25 twice at normal playback (1x speed). A confirmation process is performed, and if the stain determination signal is determined to be defective (NG), the process moves to 54 (70).

If the dirt determination signal is OK at 66 and 70, the control signal generation circuit 21 outputs 1ill to the dirt determination circuit 25.
Outputs the tll signal and turns on the OK indicator lamp 30 and buzzer 3.
2 and outputs a command signal to end the operation to the control microcomputer circuit 8 and the display microcomputer circuit 7 (reference numeral 71).

In this way, in this embodiment, by attaching a disc cleaning adapter to the external control connector of a conventional video disc player, foreign matter on a soft disc disc can be removed by pressure sweeping with the sensor itself, and the sensor's detection signal A complete leaning can be performed using a judgment method using .

Also, the mode selection switch 24 built into the adapter
The cleaning processing speed can be selected depending on the degree of contamination, reducing the time required for disk cleaning.

In this embodiment, an address code signal is used as the dirt determination means, but the present invention is not limited to this.

[Effects of the Invention] As described above, the present invention has the advantage that it is possible to easily clean the top of a soft disc in a soft disc playback machine, and also to be able to determine whether to clean the disc.

[Brief explanation of drawings]

FIG. 1 is a system configuration diagram showing an embodiment of the disk cleaning adapting system according to the present invention, and FIGS. 2 to 4 are flowcharts for explaining the operation of FIG. 1. 1... Signal processing circuit 2... Pickup arm 3... Monitor TV 4... Address code processing circuit 7... Display microcomputer circuit 8... Control microcomputer circuit 11... Fraction tll 12. ...Arm feed 21...Control signal generation circuit 25...Contamination judgment circuit 34...Mode judgment circuit

Claims (2)

[Claims] (1) Determine the presence or absence of foreign objects on the soft disc by receiving recording signals on the soft disc sent via the signal processing circuit from the sensor in the detection signal layer attached to the pickup arm of the soft disc player. and a sensor control signal for forcibly applying pressure to a sensor for detecting a foreign object on the soft disc determined by the determination circuit to force the foreign object onto the soft disc to remove the foreign object. a cleaning means for sending the cleaning means to the control microcomputer circuit, and a command signal to the control microcomputer circuit for repeating the operation of the cleaning means and the judgment means a preset number of times or until the foreign matter on the soft disk is actually removed. What is claimed is: 1. A disk cleaning adapter system comprising control signal generating means for outputting a command to a display microcomputer circuit to output a command for displaying or audibly outputting a processing operation. (2) The control signal generating means is provided with a changeover switch that can select a mode in which the determining means and the cleaning means are combined at 17 times speed or 61 times speed depending on the degree of dirt on the soft disk. disk cleaning adapter system.