KR100235760B1 - Vcr deck testing system - Google Patents

Abstract

The present invention provides a VCR deck inspection system having a failure prevention jig during deck capstan M / T and drum M / T driving inspection of the VCR deck.

The VCR deck inspection system with a failure prevention jig during the deck capstan M / T and drum M / T drive inspection of the VCR deck is designed to provide the driving power, data and GND input lines for driving the drive body of the drum or capstan of the VCR deck. A deck pallet 10 unitized by a 50-pin connector of the deck pallet; A measuring unit 30 which is a measuring means for displaying the test result on the screen; A deck mounting jig unit 20 that acts as an input to the deck pallet unit for power, GND, and data signals for VCR deck inspection, and generates an output waveform as an input of the measurement unit 30; Drum M / T generated during the inspection of the VCR deck, and deck capstan M / T and drum M / T failure preventing jig 40, which are failure prevention means of the capstan M / T; It is characterized in that it comprises a bus connector 52 connecting the deck pallet 10 and the deck failure prevention jig 40.

Accordingly, when the deck mounting jig 20 and the deck pallet 10 are coupled to each other, the potential difference between the opening and the electrostatic discharge of the ground and the ground connection between the jig and the deck by the sequential connection of the deck failure preventing jig 40. The reverse voltage applied phenomenon is eliminated, and the deck drum M / T capstan M / T defect is prevented.

Description

VCR deck inspection system with fail-proof jig during deck capstan M / T and drum M / T drive inspection of VCR decks

The present invention relates to a VCR deck inspection system having a failure prevention jig during the deck capstan M / T and drum M / T drive inspection of the VCR deck, in particular the deck capstan M / T of the VCR deck and drum M VCR invented to prevent the VCR pallet from being defective due to poor connection between the mounting jig of the operator and the VCR pallet during the inspection of the operation of the drive motor of the / T and other VCR decks using the mounting jig. A VCR deck inspection system having a failure prevention jig during deck capstan M / T and drum M / T drive inspection of a deck.

In general, the drum of the VCR deck reads a video signal magnetically recorded on the video tape by having a video head, or reads a VCR control signal recorded on the lower portion of the magnetic tape through the control head. In addition, the driving of the capstan recognizes the audio signal on the magnetic tape and plays a role of converting the sound signal.

The VCR deck consists of a combination of drive elements such as a head drum motor, a winding rail, a capstan, a control head, an audio head and an idler. These VCR decks are transferred to the inspection workers by conveyors on the inspection line while being mounted on deck pallets. At this time, the VTR deck is mounted on the deck pallet, and the driving power, data, and GND input lines necessary for driving the drive body of the drum or capstan of the VCR deck are mounted on the pallet, and the VCR deck is connected to the input line inside the pallet. It is connected by a single cable and united into a 50-pin connector 12 (Figure 3) of the deck pallet.

The VCR deck inspection system of the deck capstan M / T and drum M / T drive inspection of the conventional VCR deck includes a deck pallet 10 having a measurement unit 30 and a VCR deck 1 for viewing the tested results, and Deck mounting jig unit 20 and mounting jig that generates power, GND, and data signals for measurement and acts as an input to deck pallet 10, and outputs the input result to the measurement unit for testing through the measurement unit. And a connector 22 for connecting the deck pallet to the deck pallet, and a connecting scope 31 for connecting the deck mounting jig 20 and the measurement unit 30.

The deck capstan M / T and drum M / T drive inspection systems of the VCR deck thus constructed will operate as follows.

The inspection worker connects the input / output connector 22 of the mounting jig by passive operation to the 50-pin connection connector 12 of the deck pallet to which the VCR deck to be tested for driving is present.

The driving power, GND, and data of the VCR driver are input from the deck mounting jig 20 to the 50-pin connecting connector 12 of the deck pallet by the input / output connector 22 of the mounting jig, and the capstan and Drive a drum or the like.

Drive measurement values such as capstones and drums of the deck to be driven are displayed on the measuring instrument 30 through the mounting jig 20.

When the inspection work is completed, the operator disconnects the input / output connector 22 of the deck mounting jig from the 50-pin connection 12 of the deck pallet by manual operation and inspects the VCR deck of the next deck pallet in the same manner. do.

However, according to the construction and operation of the deck capstan M / T and drum M / T drive test systems of such conventional VCR decks, the combination of the deck mounting jig 20 and the deck pallet 10 is a power source of the mounting jig JIG. It is connected to the deck pallet's connector manually without turning it off, so the external drying condition or environment between the input / output connector 22 of the deck mounting jig and the 50-pin connector 12 of the deck pallet Alternatively, the static electricity and the reverse voltage flow inadvertently due to the manual connection process of the operator. In addition, as the coupling between the input / output connector 22 of the deck mounting jig and the 50-pin connector 12 of the deck pallet is made by manual operation, the terminal pins of each of the deck pallet's VCR decks make the same contact at a moment. In addition, since the grounding of the mounting jig and the measuring instrument and the deck pallet do not coincide with each other, the potential difference between the opening and electrostatic discharge of the ground and the ground connection of the mounting jig 20 and the deck pallet 10 may be reduced. Due to the phenomenon of reverse voltage application, etc., there is a problem that a defective VCR deck occurs during the driving inspection process.

Therefore, the present invention was invented to solve the above problems, the ground of the ground (GND open) and the electrostatic phenomenon of the deck mounting jig 20 and the deck pallet 10, the deck mounting jig and deck of the pallet Provides a VCR deck inspection system that has a failure prevention jig during deck capstan M / T and drum M / T drive inspection of VCR decks due to problems such as the application of reverse voltage due to potential difference between ground (GND) connection. Its purpose is to.

1 is a schematic diagram showing the configuration of a deck capstan M / T and drum M / T drive inspection system of a conventional VCR deck.

Figure 2 is a block diagram of a process showing the test of the VCR deck inspection system having a failure prevention jig during the deck capstan M / T and drum M / T drive test of the VCR deck according to an embodiment of the present invention.

Figure 3 is a schematic diagram showing the driving test of the VCR deck through the mounting jig by making a deck failure prevention jig according to an embodiment of the present invention.

4 is a circuit diagram showing a circuit operation process of the deck failure prevention jig according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: VCR deck 10: deck palate

12: 50-pin connector on deck pallet

20: Deck Mounting Jig

21: Cable connecting the deck mounting jig and the deck failure prevention jig

22: I / O connector of deck mounting jig 30: Measuring part

31: Scope connecting deck mounting jig and measurement unit

40: deck failure prevention jig

42: jack to deck mounting jig

51: VCR deck bad jig input bus cable

52: Bus connector of deck failure prevention jig

410: first IC 420: second IC

430: third IC 440: IC drive switch unit

442: pin connection switch 443: transistor

444 relay

450: first connection terminal group of the deck pallet connector

450 ′: First connection terminal group of deck mounting jig connector

460: second connection terminal group of the deck pallet connector

460 ′: Second connection terminal group of deck mounting jig connector

P1, P2, P3... P49, P50: Output connector pin of deck failure prevention jig

P1 ', P2', P3 '... P49 ′, P50 ′: Input connector pins from deck mounting jig

In order to achieve the above object, the VCR deck inspection system having a defect preventing jig during the deck capstan M / T and drum M / T driving inspection of the VCR deck according to the present invention can be used to drive the drive body of the drum or the capstan of the VCR deck. A deck palletizes the necessary drive power or data and GND input lines into a 50-pin connector on the deck pallet; A measuring unit which is a measuring unit displaying the inspected result on a screen for the operator to see; A deck mounting jig unit for generating an output waveform for generating a power source, a GND, and a data signal for a VCR deck inspection, and acting as an input to the deck pallet unit, and a test signal measured from the deck pallet as an input of the measurement unit; Drum M / T generated during the inspection of the VCR deck, and deck capstan M / T and drum M / T failure preventing jig which are failure prevention means of the capstan M / T; And a bus connector of a VCR deck failure prevention jig connecting the deck pallet and the failure prevention jig of the deck capstan drum M / T.

The deck pallet, which has the drive power, data, and GND input lines required to drive the VCR deck's drums, capstans, etc. into the 50-pin connector on the deck pallet, has pins on the VCR pallet connected to the VCR deck anti-bus bus connector. When the connection is completed, pin 1 and pin 50 are internally connected to drive the first IC of the deck failure prevention jig.

The bus connector of the VCR deck failure prevention jig, which connects the deck pallet 10 and the failure prevention jig of the deck capstan drum M / T, is a priority input to the part to be connected first, such as the ground (GND) of the VCR deck pallet. Input the first connection terminal of the deck pallet connector, which is connected to the pin preference P (Pin) 2 to P25 of the deck pallet, and the driving power (Vcc) or data of the deck or capstan to be connected later. It characterized in that it further comprises a second connection terminal portion of the deck pallet connector that is connected to each pin number P (Pin) 26 to P49.

In addition, in the drum M / T generated during the inspection of the VCR deck, and the deck capstan M / T and drum M / T failure prevention jig, which are means of failure prevention of the capstan M / T, pins P1 and P50 of the deck pallet are connected to the switching terminals. IC drive switch unit, which is a first IC driving means for outputting a signal for driving a first IC by driving a transistor and driving a relay circuit when P1 and P50 are connected to each other, and is driven by receiving the driving signal. The first IC 410, which is a means for receiving and switching a group as an input and outputting it to the jack of the deck mounting jig and outputting a signal for driving the first IC, by the output of the driving signal when the first IC is connected to the first IC. A third IC which is driven and outputs an output signal for driving the second IC with a predetermined time delay, and is driven by receiving a driving signal of the third IC and connected to a second connection terminal group of the VCR deck pallet connector. Referred to is characterized in that it further comprises a switching means for outputting the connection jack of claim 2IC deck mounting jig.

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

3 and 4, a schematic diagram of the VCR deck inspection system having a failure prevention jig during deck capstan M / T and drum M / T driving inspection of the VCR deck according to an embodiment of the present invention and a circuit of the deck failure prevention jig A circuit diagram showing the operational process is shown.

3 and 4, the VCR deck inspection system according to an embodiment of the present invention includes a deck pallet 10, a deck mounting jig 20, a measurement unit 30, a deck capstan M / T and a drum M /. T failure prevention jig 40, and the bus connector 52 is configured.

The deck pallet 10 is formed by uniting the driving power, data, and GND input lines necessary for loading the VCR deck 1 and driving a drive body such as a drum or a capstan of the loaded VCR deck 1. It has a 50-pin connector.

The measurement unit 30 is configured to display the inspection result on the screen for the operator to see.

The deck mounting jig unit 20 generates power, GMD, and data signals for VCR deck inspection, and acts as an input to the deck pallet 10, and the test signal measured from the deck pallet is input to the measurement unit 30. And to generate a functioning output waveform.

The deck capstan M / T and drum M / T failure preventing jig 40 is a drum M / T generated during the inspection process of the VCR deck and the capstan M / T failure preventing means, and an example of a specific configuration thereof will be described later. do.

The bus connector 52 is connected to the deck pallet 10 and the failure prevention jig 40 of the deck capstan drum M / T.

At this time, the bus connector 52 has pins P (Pin) 2 to P25 of the deck pallet 10 to allow a preferential input to be connected to the portion where the connection should be made first, such as ground (GND) of the VCR deck pallet. At pin number P (Pin) 26 of the deck pallet 10 for inputting driving power (Vcc) or data of the deck or capstan to be connected later with the first connection terminal 450 of the deck pallet connector which is connected The second connection terminal portion 460 of the deck pallet connector, which is connected to P49, and pin number P1 and pin number P50 used as the switching means, the bus connector 52 of the VCR deck failure preventing jig is configured.

The deck pallet 10 in which drive power, data, and GND input lines necessary for driving a drive body such as a drum or a capstan of the VCR deck are united into a 50-pin connector of a deck pallet, the pins of the VCR pallet are connected to the VCR deck. When the connection with the fail preventing bus connector 52 is completed, pins 1 and 50 are internally connected to drive the first IC 410 of the deck fail preventing jig 40.

In addition, the drum M / T generated during the inspection process of the above-described VCR deck, and the deck capstan M / T and the drum M / T failure preventing jig 40, which are the failure prevention means of the capstan M / T, are one example. As shown in FIG. 1, the first IC 410, the second IC 420 and the third IC 430, and the IC drive by connecting the first connection terminal group 450 and the second connection terminal group 460. The switch unit 440 is connected and configured as follows.

That is, the IC driving switch unit 440 uses the pins P1 and P50 of the deck pallet 10 as switching terminals to output a signal for driving the first IC 410 when P1 and P50 are connected. It consists of a drive means.

At this time, using the pins P1 and P50 of the deck pallet 10 as a switching terminal, the IC drive switch unit 440 which is the first IC driving means for outputting a signal for driving the first IC when P1 and P50 are connected, the pin P1 When the switching signal of the transistor 443 and the transistor 443 for receiving and transferring the switching input signal to the relay circuit when the P50 and P50 are connected and switched is turned on, the switch is turned on to turn on the first IC. And a relay switch 444 which is a switching means for driving.

In addition, the first IC 410 is driven by receiving a drive signal from the IC driving switch 440 and is connected to the first connection terminal group 450 between the deck pallet 10 and the deck mounting jig 20 to be connected to the VCR. The first connection terminal group 450 of the deck pallet connector is switched, and the output of the switched first connection terminal group 450 is output to the connection jack 42 of the deck mounting jig, and the output of the first IC 410 is completed. When the output of the first IC (410) is connected to the third IC (420) to drive the third IC (430).

In addition, the third IC 430 is connected to pin 1 of the first IC to be driven by receiving the output signal of the first IC 410 to output an output signal for driving the second IC 420 after a predetermined time delay. It is connected to the second IC (420).

The second IC 420 is driven by receiving the driving signal of the third IC 430 and is connected to the second connection terminal group 460 of the VCR deck pallet connector between the deck pallet 10 and the deck mounting jig 20. And a switching means for switching the second connection terminal group 460 and outputting the second connection terminal group 460 to the connection jack 42 of the deck mounting jig.

The detailed operation of the VCR deck inspection system having a failure prevention jig during the deck capstan M / T and drum M / T driving inspection of the VCR deck according to the embodiment of the present invention configured as described above will be described with reference to FIGS. 3 and 4. The explanation is as follows.

The instrument 30 and the deck mounting jig 20 are connected to each other by the connecting scope 31, and the deck mounting jig 20 and the deck failure preventing jig 40 are connected to the connecting cable 21. And an input bus cable 51 having a 50-pin connector 52 of the VCR deck failure preventing jig for input from the deck pallet 10 to the deck failure preventing jig 40. FIG. )

The inspector manually connects the deck pallet given to the inspector with the 50-pin connector 12 of the deck pallet using the 50-pin connector 52. When the connection between pin 1 of the deck pallet input capacitor 50 and the pin 50 of the last pin is completely connected, the open node of the pin connection switch 442 is connected to the transistor 443. Current is applied to the relay switch 444 is switched on (ON) to drive the first IC.

The first IC is driven by the switching action of the relay switch 444. At this time, the first IC is the first connection terminal group P2, P3, which is a part to be connected first, such as the ground GND of the VCR deck pallet. P4 ... P24, P25) are inputted to perform a switching action, and are sequentially output from P'2 to P'25 of the connecting jack 42 of the deck mounting jig connected by switching. In addition, the first pin output of the first IC serves as a driving input signal for driving the third IC.

The third IC 430 driven by receiving the output signal of the first IC 410 as an input sends an output signal to the output pin number 13 after a predetermined time delay, and the output signal is input as the driving signal of the second IC 420. do.

The second IC 420 driven by receiving the output signal of the third IC 430 as an input signal is used to drive the drive power (Vcc) or data of the deck or capstan to be connected later among the bus connectors 52 of the VCR deck failure prevention jig. Receives and switches the second connection terminal group (pin number P26 to P49 of the deck pallet) for input, and the switched output value is connected to the second connection terminal group 460 'of the connection jack 42 of the deck mounting jig. It is connected sequentially. (Fig. 4)

By this operation, the driving of the first connection terminal group 450, which is a portion to be connected first like the ground GND, occurs first by the first IC 410, and the driving power of the deck or capstan to be connected later. (Vcc) or data connection is made by the second IC (420).

When the connection between the deck mounting jig 20, the deck failure preventing jig 20, and the deck pallet 10 is completed as described above, the inputs of the deck mounting jig 20 are applied to the deck failure preventing jig 40. Through the deck mounting jig is input to the VCR deck (1) of the deck pallet (10) and the output of the drive unit of the VCR deck by each input value to the instrument 30 through the deck mounting jig, the operator's observation through the screen of the instrument Then, the driving of each VCR driver is checked.

According to the configuration and operation of the VCR deck inspection system having a failure prevention jig during the deck capstan M / T and drum M / T driving inspection of the VCR deck according to the embodiment of the present invention described above, the deck mounting jig 20 and When the deck pallet 10 is connected by the sequential connection of the deck failure prevention jig 40, the ground voltage and the electrostatic discharge, and the reverse voltage application phenomenon due to the potential difference between the jig and the deck when the ground connection. The drum M / T, capstan M / T, etc. of the deck, which occurred due to the phenomenon of, have an effect of preventing a defect.

Although the present invention has been described in detail by way of example with reference to the accompanying drawings. The present invention is not limited thereto, and modifications and improvements are possible within the ordinary knowledge of those skilled in the art.

Claims (5)

A VCR deck inspection system for preventing defects occurring during capstan M / T and drum M / T driving inspection of a VCR deck; A deck pallet 10 in which drive power, data and GND input lines necessary for driving a drive body such as a drum or a capstan of a VCR deck are united into a 50-pin connector of a deck pallet; A measuring unit 30 which is a measuring means for displaying the inspected result on a screen for the operator to see; Deck mounting jig, which is a means for generating an output waveform by generating a power supply, a GND, and a data signal for the VCR deck inspection, and acting as an input to the deck pallet section, and a test signal measured from the deck pallet as an input of the measurement section 30. Part 20; Drum M / T generated during the inspection of the VCR deck, and deck capstan M / T and drum M / T failure preventing jig 40, which are failure prevention means of the capstan M / T; Deck capstan M / T of the VCR deck, characterized in that the bus connector 52 of the VCR deck failure prevention jig connecting the deck pallet 10 and the failure prevention jig 40 of the deck capstan drum M / T; VCR deck inspection system with anti-jig prevention jig during drum M / T drive inspection. The deck pallet (10) of claim 1, wherein the deck pallet (10) in which the drive power, data, and GND input lines necessary for driving a drive body such as a drum or a capstan of the VCR deck are united into a 50-pin connector of the deck pallet, Pins 1 and 50 are internally connected to drive the first IC 410 of the deck failure prevention jig 40 when the pins are connected to the VCR deck failure prevention bus connector 52. VCR deck inspection system with a failure prevention jig during deck capstan M / T and drum M / T drive inspection of VCR decks. The bus connector 52 of the VCR deck failure prevention jig connecting the deck pallet 10 and the failure prevention jig 40 of the deck capstan drum M / T is similar to the ground of the VCR deck pallet. A first connection terminal group 450 of deck pallet connectors each of which is connected to pin numbers P2 to P25 of the deck pallet 10 to allow a priority input to a portion to be connected first; The decks connected to pin numbers P26 to P49 of the deck pallet 10 for inputting driving power or data of the deck or capstan to be connected later in addition to the portion to be connected first, such as the ground of the VCR deck pallet. A VCR deck inspection system having a failure prevention jig during deck capstan M / T and drum M / T driving inspection of a VCR deck, comprising a second connection terminal group 460 of a pallet connector. The deck capstan M / T and the drum M / T failure preventing jig 40, which are the failure prevention means of the drum M / T and the capstan M / T, generated in the inspection process of the VCR deck, the deck pallet An IC driving switch unit 440 which is a first IC driving means for outputting a signal for driving the first IC when P1 and P50 are connected by using pins P1 and P50 of (10) as switch terminals; It is driven by receiving the drive signal of the IC drive switch unit 440 is connected between the deck pallet 10 and the deck mounting jig 20, the first connection terminal group 450, the first connection terminal group of the VCR deck pallet connector A first IC 410, which is a means for switching 450 to output to the connection jack 42 of the deck mounting jig and outputting a signal for driving the third IC; A third IC 430 connected to pin 1 of the first IC, the second IC driving means being driven by receiving an output signal as an input when the first IC is driven and outputting an output signal for driving the second IC with a predetermined time delay; In addition, the driving signal of the third IC 30 is driven and driven between the deck pallet 10 and the deck mounting jig 20 and connected to the second connection terminal group 460 of the VCR deck pallet connector to switch the deck mounting jig. VCR deck inspection system having a failure prevention jig during deck capstan M / T and drum M / T drive inspection of the VCR deck, characterized in that it comprises a second IC (420) which is a switching means for output to the connection jack 42 . 5. The IC drive switch according to claim 4, wherein pins P1 and P50 of the deck pallet 10 are used as switching terminals and IC driving switches are first IC driving means for outputting a signal for driving the first IC 410 when P1 and P50 are connected. The unit 440 includes a transistor 443 for receiving an input number according to the switching and transmitting the input number to the relay circuit when the pins P1 and P50 are connected and switched on; Deck capstan M / T and drum of a VCR deck, comprising a relay switch 444 which is a switching means for switching on when the switching signal of the transistor 443 acts as an input to drive the first IC 410. VCR deck inspection system with a jig to prevent failure during M / T drive inspection.

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