KR19990004208A - Line Mode Signal Input Function Tester and Method of VCR - Google Patents

Abstract

The present invention provides an apparatus and method for checking a line mode signal input function of a VCR.

The VCR line mode signal input function inspecting apparatus is a device for inspecting a line mode input function of audio and video signals in a video cassette recorder (VCR) production process by operating a VCR set 1 as an inspection target. An operation unit 2; A VCR set having the same configuration as that of the inspection target VCR set 1, which receives an air wave signal (RF signal) from the outside, and outputs the line mode input terminal (V) of the VCR set 1 from the output terminals 53 and 54 thereof. A signal supply device 5 for providing audio and video test signals to 11 and 12; And connected to the audio and video signal output terminals 13 and 14 of the VCR set 1 so as to determine that a signal input from the signal supply device 4 is processed and output from the VCR set 1. It characterized in that it comprises a first output device (3) for.

According to such a configuration according to an embodiment of the present invention, a device for supplying audio and video signals for testing to a VCR set to be tested can be used as a VCR set of the same type in mass production, so that a separate audio and video signal generator There is no need for the switchover and even if the model is switched, no effort is needed to select an appropriate signal.

Description

Line Mode Signal Input Function Tester and Method of VCR

The present invention relates to an apparatus and method for inspecting a line mode signal input function of a video cassette recorder (VCR), and more particularly, to an apparatus for supplying a signal to a VCR set to be inspected, by using a VCR set of the same type as a separate signal generator. The present invention relates to an inspection apparatus and a method that enables economic inspection by making it unnecessary.

In general, a VCR receives a signal from a broadcast signal (RF signal) transmitted from a broadcasting station or equipment such as a television, records it in a video cassette having magnetic tape, or reads information recorded in a predetermined video cassette and It is a device to send to the same display device. This VCR has a model capable of receiving and processing a signal from a separate video and audio supply device, that is, capable of inputting a line mode signal.

The production line checks all the functions of the VCR. In particular, a separate signal supply device is required to check the line mode signal input function of the VCR. Referring to FIG. 1, the apparatus for inspecting a line mode signal input function of a conventional VCR is as follows. As shown, in the conventional line mode signal input inspection apparatus, a separate audio signal generator 42 and a video signal generator 44 are used as the signal supply device 4. That is, the audio and video signals for inspection are supplied from the signal generators 42 and 44 to the line mode input terminals 11 and 12 of the VCR set 1 as the inspection target.

In general, the line mode input terminals 11 and 12 are located at the front of the VCR set 1, and the output terminals as well as the input terminals are disposed at the rear. In this specification, only the inspection of the line mode audio and video input terminals 11 and 12 on the front of the VCR set 1 is described, but of course, the same can be applied to the inspection of the audio and video input terminals on the rear surface. .

The illustrated operation unit 2 has a switch box 26 for the operator to operate, the remote control circuit 24 is driven by the operation of the switch box 26 from the remote control light emitting sensor 22 connected to it. Appropriate signals are emitted and received by the signal receiving unit 15 of the VCR set 1 to be inspected to perform a predetermined function, such as playback and recording, thereby outputting an output device (for example, a TV or an oscilloscope or a speaker) 3. Will be displayed as. Therefore, the operator recognizes the result displayed on the output device 3 and compares it with the signal supplied, thereby finally selecting the defective VCR set 1.

In the conventional line mode signal input function inspection apparatus and method of the conventional VCR, since video and audio signals are provided to the VCR set to be inspected through a separate signal generator, the cost of the test equipment is expensive. In addition, when the type of the VCR set to be inspected is different, the level or frequency of the input signal is changed, so there is a hassle to set the signal generator accordingly.

Therefore, the present invention has been invented to solve the above problems, and can be economically inspected by using a device for supplying audio and video signals for testing to a VCR set to be tested as a VCR set of the same type in mass production. An object of the present invention is to provide an apparatus and method for checking a line mode signal input function of a VCR.

1 is a schematic block diagram illustrating a configuration of an inspection apparatus for a conventional line mode signal input function inspection.

2 is a schematic block diagram illustrating the configuration of a test apparatus for checking a line mode signal input function according to an embodiment of the present invention.

3 is a schematic block diagram illustrating a configuration of an inspection apparatus for line mode signal input function inspection according to another embodiment of the present invention;

Explanation of the main symbols used in the drawings

1: VCR set (Inspection) 11: (Front) Audio input terminal

12: (front) video input terminal 13,53: (rear) audio input terminal

14,54: (Rear) Video input terminal 15: Remote control signal receiver

2: Operation 22: Remote control light emitting sensor

24: remote control circuit 26: switch box

3: first output device 3 ': second output device

4: signal supply device 42: voice signal generator

44: Video signal generator 5: Signal supply device (VCR set)

56: RF signal input terminal

In order to achieve the above object, the present invention provides an apparatus for inspecting a line mode input function of an audio and video signal in a video cassette recorder (VCR) production process, comprising: an operation unit for manipulating a VCR set to be inspected; A VCR set having the same configuration as the VCR set to be inspected, the signal supply device receiving an air wave signal (RF signal) from the outside and providing audio and video test signals from the output terminal to the line mode input terminal of the VCR set. ; And a first output device connected to the audio and video signal output terminals of the VCR set to confirm that a signal input from the signal supply device is processed and output from the VCR set. Provided is a VCR line mode signal input function tester.

In addition, the apparatus for checking the re-in mode signal input function of the VCR provided by the present invention includes, in addition to the above configuration, a branching test between the output terminal of the signal supply device and the input terminal of the VCR set to be inspected. It may be configured to further include a second output device.

In addition, in the line mode signal input function test apparatus of the VCR provided by the present invention, in addition to the above configuration, the audio and video signals supplied from the signal supply apparatus are signals for reproducing and outputting a signal recorded on a video cassette tape. It may be configured as a feature.

The present invention relates to a method for inspecting a line mode input function of an audio and video signal in a production process of a video cassette recorder (VCR), comprising: a VCR set to be inspected and a signal supply device having the same configuration as the VCR set; A setting step of connecting a first output device to a signal from the signal supply device to the first output device via a VCR set; The signal supply device 5 receives an air wave signal (RF signal), provides an audio and video test signal from the output terminal to the line mode input terminal of the VCR set, and operates the VCR set to provide a signal. A signal processing step of processing and outputting the signal to the first output device; and checking a signal output to the first output device to determine whether a line mode input function of the VCR set to be inspected is defective. It provides a line mode signal input function check security of the VCR, characterized in that made.

In addition, in the line mode signal input function test method of the VCR provided by the present invention, in addition to the above configuration, the signal processing step supplies a signal to a second output device directly connected to the signal supply device, and the test step The controller may be configured to determine whether or not the defect is determined by comparing the output contents of the first output device and the second output device.

In addition, in the line mode signal input function checking method of the VCR provided by the present invention, in addition to the above configuration, the audio and video signals supplied from the signal supply device are signals for reproducing and outputting a signal recorded on a video cassette tape. It may be configured as a feature.

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

2 is a schematic block diagram illustrating a configuration of a test apparatus for checking a line mode signal input function according to an embodiment of the present invention, and FIG. 3 is a line mode signal input according to another embodiment of the present invention. A schematic block diagram illustrating the configuration of the inspection apparatus for the functional inspection is shown. As shown, the inspection device according to an embodiment of the present invention comprises an operation unit 2, a signal supply device 5 and an output device (3), in particular the signal supply device 5 is a VCR to be inspected The VCR set is the same model as the set 1 and has the same configuration.

The operation unit 2 can operate the VCR set 1 to be inspected, for example, to switch modes for playback or recording function or line mode and TV / VCR operation mode switching. It has the same circuit configuration as the remote control according to the finished product, but only for the convenience of inspection, the switch box 26 is connected to the remote control circuit 24 and the light emitting sensor 22 independently.

As the signal supply device 5, a VCR set of the same type as that of the VCR set 1 to be inspected is used without using the conventional signal generator 4. The signal supply device 5, which is a set of VCRs, need not be a finished product, but is sufficient if the signal output function has been inspected and is in a reliable production stage. Therefore, the VCR set in mass production can be used as the signal supply device 5. Therefore, no separate signal generator 4 is required. The signal supply device 5, which is a set of VCRs, receives an air wave signal (RF signal) from the RF signal input terminal 56 from the outside, and the audio and video output terminals 53, 54 of the VCR set 1 receive the signal. Line mode input terminals 11 and 12 are connected to provide audio and video test signals.

The output device 3 is connected to the audio and video signal output terminals 13 and 14 of the VCR set 1 so that a signal input from the signal supply device 4 is output from the VCR set 1. It is processed and output. Accordingly, the operator operates the switch box 26 of the operation unit 2 by operating each function key, mode switching key, and the like, so that the signal supplied from the signal supply device 5 to the VCR set 1 to be inspected is applied to each mode and predetermined function. Thus, by checking the output signal at the output device 3, it is possible to determine whether the VCR set 1 to be inspected is defective.

That is, as a step of first setting the inspection apparatus, the VCR set 1 to be inspected is connected to the signal supply apparatus 5 and the first output apparatus 3 having the same configuration as the VCR set. At this time, the signal is supplied from the signal supply device 5 to the first output device 3 via the VCR set 1. Then, as a signal processing step, the air supply signal (RF signal) is received from the signal supply device 5, and the line mode input terminals 11 and 12 of the VCR set 1 are received from the output terminals 53 and 54 thereof. To provide an audio and video test signal, and to operate the VCR set 1 to process the provided signal to output to the first output device 3, and finally, as the inspection step, the first output device ( The signal output to 3) is examined to determine whether or not the line mode input function of the VCR set 1 to be inspected is defective. This determination can be determined by a criterion defined according to the RF signal supplied to the signal supply device 5. Therefore, the RF signal is supplied according to the reference value.

In another embodiment of the present invention, the signal is branched between the output terminals 53 and 54 of the signal supply device 5 and the input terminals 11 and 12 of the VCR set 1 to be inspected. The signal is simultaneously supplied to the second output device 3 '. In this embodiment, it is possible to determine whether or not there is a defect by comparing the output contents of the separate first output device 3 and the second output device 3 '. Therefore, it is sufficient to provide an appropriate RF signal. It does not have to be an RF signal that fits.

In addition, in another embodiment of the present invention, the audio and video signals supplied from the signal supply device 5 may use a signal for reproducing and outputting a signal recorded on a video cassette tape. That is, the VCR set 1 to be inspected can be inspected by reproducing and outputting a video cassette tape in which the audio and video signals with reference values separately recorded by the signal supply device 5.

According to the configuration of the apparatus and method for checking the line mode signal input function of the VCR according to the embodiment of the present invention described above, the VCR set of the same type that is mass-producing a device for supplying audio and video signals for testing to the VCR set to be inspected Since it can be used as a separate audio and video signal generator, even if the model is switched, no effort to select an appropriate signal. Therefore, there is an effect that economic and productive inspection can be made.

Although the apparatus and method for checking line mode signal input function of a VCR according to an embodiment of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited thereto and is within the ordinary knowledge of those skilled in the art. Modifications and improvements are possible.

Claims (6)

An apparatus for inspecting a line mode input function of an audio and video signal in a production process of a video cassette recorder (VCR), comprising: an operation unit (2) for manipulating a VCR set (1) to be inspected; A VCR set having the same configuration as that of the inspection target VCR set 1, which receives an air wave signal (RF signal) from the outside, and outputs the line mode input terminal of the VCR set 1 from the output terminals 53 and 54 thereof. A signal supply device 5 for providing audio and video test signals to 11 and 12; Then, it is connected to the audio and video signal output terminals 13 and 14 of the VCR set 1 to confirm that the signal input from the signal supply device 4 is processed and output from the VCR set 1. Line mode signal input function inspection apparatus of the VCR, characterized in that it comprises a first output device (3) for. 2. The second apparatus according to claim 1, wherein a signal is branched between the output terminals (53, 54) of the signal supply device (5) and the input terminals (11, 12) of the VCR set (1). And an output device (3 '). The device according to claim 1 or 2, wherein the audio and video signals supplied from the signal supply device (5) are signals for reproducing and outputting a signal recorded on a video cassette tape. A method for inspecting a line mode input function of an audio and video signal in a production process of a video cassette recorder (VCR), comprising: a VCR set (1) to be inspected and a signal supply device (5) having the same configuration as the VCR set; Connect the first output device 3 to the VCR set 1 from the signal supply device 5 via the VCR set 1 to connect the first output device 3 to the VCR set 1 from the signal supply device 5. A setting step of causing a signal to proceed to the first output device (3) through; The signal supply device 5 receives an air wave signal (RF signal), and outputs audio and video test signals from the output terminals 53 and 54 to the line mode input terminals 11 and 12 of the VCR set 1. A signal processing step of operating the VCR set (1) to process the provided signal and output it to the first output device (3); And inspecting a signal output to the first output device 3 to determine whether the line mode input function of the VCR set 1 as the inspection target is defective. Signal input function test method. 5. The signal processing step according to claim 4, wherein the signal processing step also supplies a signal to the second output device (3 ') which is directly connected to the signal supply device (5), and the inspection step is performed with the first output device (3). A signal is also supplied to the second output device 3 ', and the inspection step determines whether or not there is a defect by comparing the output contents of the first output device 3 and the second output device 3'. Way. The method according to claim 4 or 5, wherein the audio and video signals supplied from the signal supply device (5) are signals for reproducing and outputting a signal recorded on a video cassette tape.