KR100218436B1 - A self-diagnosis device of rental dvd player - Google Patents

Abstract

The present invention relates to a technology for self-diagnosing a failure in a DVD player for DVD and transmitting the result thereof. In the conventional DVD player for a rental device, the hardware of the player is almost a digital data processor block. It is hard to find the part where the failure occurs, and moreover, if the rental module has an error, the user can not watch the program at all, but the fee is counted and there is a defect that requires payment to the program provider.

Accordingly, in order to solve the problem, the present invention stores a program for testing a rental module and other parts of the system in a ROM for self-diagnosis, and tests a part to be diagnosed using a corresponding test program stored in the ROM. And self-diagnostic means for comparing the result with a value output when the corresponding part is normally driven, and determining the corresponding part as a failure when they do not coincide with each other; A rental module having means for testing the rental data processing unit using a test program stored in the ROM, and comparing the result with a normal output device and determining a corresponding part as a failure when the result is not matched with each other; It is configured to include output means for transmitting the fault contents to the service center when the fault is detected.

Description

Self-diagnosis device for rental DVD player

1 is a block diagram of a general DVD player for rental.

2 is a block diagram of an embodiment of a self-diagnosis apparatus for a DVD player for renting the present invention.

* Explanation of symbols for main parts of the drawings

101: disk 102: optical pickup device

103: high frequency shaping unit 104: A / D converter

105: rental discriminator 106: servo control unit

107: system control unit 108: self-diagnosis room

109: self-diagnostic section 110: on-screen oscillator

111A, 111B: Switch 112: Rental Module

113: data stream parsing controller 114: controller for data processing

115: video decoder 116: video RAM

117: Video Mixer 118, 123: D / A Converter

119: NTSC / PAL encoder 120: video signal reproduction processing unit

121: Audio Decoder 122: Audio RAM

124: audio signal reproduction processing unit

The present invention relates to a technology for self-diagnosing a failure in a DVD (Digital Video Disc) player and transmitting the result thereof, and in particular, when a failure is detected by a self-diagnosis of a specific part of the DVD player. Rentals that display the details of the faults on the external display means, send them to the service center in charge of troubleshooting, and in case of a breakdown of the rental protection, send the facts to the rental service center and prevent the rental fee from being counted. It is about the self-diagnosis device of the DVD player.

FIG. 1 is a block diagram of a general DVD player for an optical pickup device 2 that scans a laser beam at a designated position of a disk 1, detects light reflected from the disk, and converts the light into an electrical signal. Wow; A high frequency wave shaping unit 3 for shaping the high frequency RF output from the optical pickup device 2 and an A / D converter 4 for converting the output signal thereof into a digital signal; A rental discriminator (5) which determines whether the output signal of the A / D converter (3) is scrambled or not; A sub controller (6) for controlling the focus and tracking of the optical pickup device (2), the rotational speed of the motor, and the like based on the output signal of the high frequency shaping unit (3); A system control unit (7) for controlling the driving of each unit; Switches 9A and 9B which are supplied by the system control unit 7 to supply the output signal of the A / D converter 4 to the data stream parsing unit 11 as it is or through the rental module 10. Wow; The rental module 10 which receives a descrambling code from a rental service center through a public telephone network (PSTN) and descrambles the scrambled signal supplied through the switch 9A using the same, thereby restoring the original signal. and; A data parsing processor (11) for receiving a data stream through the switch (9B) and separating the video data and the audio data under the control of the data processing controller (12); A video signal reproduction processor (18) for converting the video signal output from the data parsing processor (11) into a baseband signal to generate a final video output (Vout); The data parsing processor 11 is composed of an audio signal reproducing processor 22 for converting an audio signal output from the audio frequency band to an audible frequency band.

The optical pickup device 2 scans a laser beam at a designated position of the disk 1, detects the light reflected from the disk 1, converts it into an electrical signal, and outputs the converted electrical signal. After shaping through (3), it is converted into a digital signal through the A / D converter (4).

At this time, the rental discriminator 5 checks whether the signal output from the A / D converter 4 is secreted and determines whether the disk 1 currently being reproduced is a rental disk or a normal disk, The result is output to the system control unit 7 side. Accordingly, the system control unit 7 controls the switches 9A and 9B based on the output signal of the rental discriminator 5 so that the A / D converter 4 when the disk 1 is a general disk. ) Is output to the daystream parsing processing unit 11 as it is, and when it is a rental disk, it is transmitted through the rental module 10.

The rental data processing unit 10A of the rental module 100 receives a descrambling code from a rental service center through a public telephone network (PSTN) and a modem (10B), and uses the scrambling supplied through the switch 9A. The descrambled signal is recovered to recover the original signal.

Accordingly, the data stream parsing processing unit 11 is supplied with the same playback data as the normal disk is played back even when the rental disk is played back, and is controlled by the data processing controller 12. Separate video and audio data from

Through this process, the reproduced and separated video signal is converted into the final video output Vout through the video signal reproducing processor 18, and the audio signal is output through the audio signal reproducing processor 22. Aout).

However, in such a conventional DVD player, when the player fails, the hardware of the player is almost made up of a digital data processor block, which makes it difficult to find out where a failure occurs. Despite the lack of appreciation, the fee was counted and the program provider had to pay a fee.

Accordingly, an object of the present invention is to diagnose a failure of a specific part of a DVD player by itself and, when a failure is detected, display the details of the failure on an external display unit and transmit it to a service center in charge of troubleshooting. In the event of a failure, the service provides a self-diagnosis device that transmits the fact to the rental service center (server) and prevents the rental fee from being counted.

The self-diagnosis apparatus for rental DVD player of the present invention for achieving the above object comprises: self-diagnosis storage means for storing a test program for testing a DVD player for reproducing a disc by communication with a sub; Self-diagnostic means for testing a part to be diagnosed using the corresponding test program stored in the self-diagnosis storage means and determining whether an abnormal state is based on the result; A rental module having means for testing the rental data processing unit using a test program stored in its own ROM and determining a corresponding part as a failure when comparing the result value with a normal output value and not matching each other; And an output means for transmitting the detected contents to the server so that the rental fee is not counted when the abnormal state of the rental module is detected by the self-diagnosis means or the rental module.

FIG. 2 is a block diagram of an embodiment of a self-diagnostic apparatus for a DVD player for renting the present invention for achieving the above object. As shown therein, light reflected from and scanning a laser beam at a designated position of the disc 101 is shown. An optical pickup apparatus 102 for detecting and converting the detected signal into an electrical signal; A high frequency wave shaping unit 103 for shaping a high frequency RF output from the optical pickup device 102 and an A / D converter 104 for converting an output signal thereof into a digital signal; A rental discriminator (105) for determining whether the output signal of the A / D converter (104) is a scrambled signal; A sub-control unit (106) for controlling the focus and tracking of the optical pickup device (102), the rotational speed of the motor, and the like based on the output signal of the high frequency shaping unit (103); A system control unit 107 which checks various subroutine outputs of the optical pickup device 102 and transmits the result values to the self-diagnosis unit 109; A self-diagnostic ROM 108 for storing proggles for testing each part of the system except the rental module 112; Read a program for testing the optical pickup device 102, the data stream parsing unit 113, the video decoder 116, the audio decoder 115, etc. from the self-diagnostic ROM 108, and test the desired part and A self-diagnosis unit 109 for determining the corresponding part as a failure when comparing the values output when the corresponding part is normal; An on-screen oscillator 110 for outputting an on-screen signal for displaying the fault content of the corresponding part on the screen under the control of the self-diagnostic unit 109; Under the control of the system control unit 107, the output signal of the A / D converter 104 is supplied to the data stream parsing unit 113 as it is or through the rental module 112 (111A, 111B) Wow; Receives the descrambling code from the rental service center (server) through the public telephone network (PSTN), and uses it to descramble the scrambled signal supplied through the switch 111A to recover the original signal and A rental module 112 for testing whether the test program is normal and notifying the server of the contents of the failure detection; A data parsing processor 113 for receiving a data stream through the switch 111B and separating the video data and the audio data under the control of the data processing controller 114; A video signal reproduction processor 120 for converting the video signal output from the data parsing processor 113 into a baseband signal to generate a final video output Vout; An audio signal reproduction processor 124 converts an audio signal output from the data parsing processor 11 into a signal of an audible frequency band. The operation and effect of the present invention configured as described above will be described in detail as follows.

When diagnosing whether the optical pickup device 102 is normal, the self-diagnosis unit 109 reads out the diagnostic program stored in the self-diagnosis ROM 108 and outputs it to the system controller 107. The system controller 107 drives the sub-control unit 106 to an initial drive value and checks the presence or absence of a focus sub, a tracking sub, and a laser diode output as examples of various subroutine outputs of the optical pickup device 102. The result is output to the self-diagnosis unit 109.

Accordingly, the self-diagnostic unit 109 determines whether an abnormality occurs in the optical pickup device 102 based on an input value, and when it is determined that an abnormality has occurred, the self-diagnostic unit 109 drives the on-screen oscillator 110 to turn on the abnormal part therefrom. The screen information is output, which is mixed with the signal reproduced and output from the video mixer 117 and displayed on the external display means through the video D / A converter 118 and the NTSC / PAL encoder 119. Be aware of the facts.

At the same time, the self-diagnosis unit 109 reads the conversion number of the service center stored in the self-diagnosis ROM 108 together with the failure occurrence information indicating that a failure of the optical pickup device 102 has occurred, and then rents the module 112. The rental module control unit 112B reads the set information previously stored in the ROM 112C, that is, the user's address, the set ID number, and the like. Since it is transmitted to the service center through the 112D and the public telephone network (PSTN), the service center can recognize the breakdown of the device even if the user does not notify it.

However, if it is determined that the optical pickup device 102 has no abnormality as a result of the diagnosis of the self-diagnosis unit 109, the fact is notified to the system control unit 107, so that the spindle motor ( (Not shown in the figure) is driven to rotate the disk 101 at a constant speed.

At this time, the high frequency signal reproduced and output through the optical pickup device 102 is processed through the high frequency shaping unit 103 and then transferred to the self diagnosis unit 109, and the self diagnosis unit 109 receives the input signal. Compared with the reference signal when the level of the input signal is lower than the reference value is determined by the foreign material in the objective lens is determined to output the corresponding on-screen information through the on-screen oscillator 110, which is the path It is displayed on the screen through the user can recognize the fact.

On the other hand, the operation of the self-diagnosis mode that checks the failure of the rental module 112 and displays the details of the failure on the display device as described above, and automatically notifies the service center in charge of troubleshooting As follows.

The ROM 112C stores a program for testing the rental module 112 and the execution result of the test program when the rental module 112 is normally driven. When the self-diagnosis mode is set, the test program is executed to diagnose the failure of the desired part.

That is, in the self-diagnosis mode, the rental module control unit 112B reads a program for testing the rental data processing unit 112A from the ROM 112C and executes the program on the rental data processing unit 112A. The result value is compared with the reference value read from the ROM 112C, that is, the result value when the rental data processing unit 112A is normal.

In other words, when a predetermined test program is input to the rental data processing unit 112A to perform descrambling, and any value is known, the rental data processing unit 112A is determined to be normal. If it is determined to be normal, if the descrambling code inputted through the switch 111A through the descrambling code received from the rental service center through the public telephone network (PSTN) and the modem (112D) will naturally be descrambling.

In addition, if all of the above test results are determined to be normal, the self-diagnosis control unit 109 reads out the data stream parsing test program stored in the self-diagnosis ROM 108 and transfers the data to the controller 114 for data processing. Accordingly, the data processing controller 114 performs the input test program on the data stream parsing processing unit 113 to determine whether or not it is normal as described above.

In addition, the data processing controller 114 receives the video decoder test program and the audio decoder test program from the self-diagnostic ROM 108 through the above-described paths of the video decoder 115 and the audio decoder 121. Test for normality.

If a failure is detected by testing a specific part of the system as described above, the failure details of the optical pickup device 102 are displayed on the external display means in an on-screen manner as well as the modem 112D. And by notifying the server through the public telephone network (PSTN) it is possible to prevent the rental fee is incorrectly charged.

As described in detail above, the present invention diagnoses a specific part of the DVD player frequently caused by the failure itself and informs the user, and at the same time automatically transmits the failure history to the service center in charge of troubleshooting. There is an effect that can help to repair, there is an effect that can be prevented from being charged in the state that can not watch the rental program due to a failure of the rental module.

Claims (4)

A self-diagnostic ROM storing a program for testing each part of the system except the rental module; Test the part to be diagnosed using the corresponding test program stored in the self-diagnosis ROM, and compare the result value with the output value when the part is normally operated. Self-diagnostic means; A rental module having means for testing the data processing unit with a test program stored in its own ROM and comparing the result with a normal output value and determining a corresponding part as an abnormal state when the result is not matched with each other; And an output means for transmitting the detected contents to the server so as to display the contents when the abnormal state is detected and not to count the rental fee. 2. The self-diagnosis apparatus of a rental DVD player according to claim 1, further comprising an on-screen element for displaying a fault content on a display means when a fault is detected. The device of claim 1, wherein the failure details include a user's address, a telephone number, and an ID number of the set. A DVD player for playing back a disc by communicating with a sub, the DVD player comprising: self-diagnosis storage means for storing a test program for testing the DVD player; Self-diagnostic means for testing a part to be diagnosed using the corresponding test program stored in the self-diagnosis storage means and determining whether an abnormal state is based on the result; And an output means for transmitting the detected contents to the server so that the rental fee is not counted when the abnormal state is detected by the self-diagnosis means.