JP2002165234A - Apparatus and method for self-diagnostic processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for a self-diagnostic processing operation, wherein, when nonconforming is generated, self-diagnostic processing operation can be executed surely on a device to be diagnosed, whose self- diagnosis is hard to execute steadily. SOLUTION: In a self-diagnostic processing part 10, when it is judged by a button pressing-down judgment part 11 that the push-down duration of a reset button is less than three seconds, a self-diagnosis execution part 12 executes the self-diagnostic processing operation of whether an incorrectible error is generated or whether a supplied voltage or a supplied current is excessive, in units of substrates or blocks inside each digital block at the inside of a part 20 to be diagnosed. By an execution result processing part 13, the result of the self-diagnostic processing operation is judged. When an error or the like is generated in the self-diagnostic processing operation, an LED (not shown) is made to blink, and a self-diagnostic result is displayed on a display part 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-diagnosis processing apparatus and a self-diagnosis processing method for performing a self-diagnosis processing on a portion to be diagnosed having a plurality of circuit blocks.

[0002]

2. Description of the Related Art Conventional television broadcasts include, in addition to general terrestrial broadcasts, CATV broadcasts supplied via cables and broadcast satellites. Each of these broadcast signals is received by a television receiver, and video and audio signals are subjected to analog signal processing and analog image / audio processing, extracted, and reproduced as a series of videos.

[0003] In such a conventional television receiver, a self-diagnosis processing function is added to detect whether each device or function is normal. Normally and abnormally are detected, and if an abnormality is found, for example, an LED is turned on. At this time, the user is notified of the occurrence of the abnormal state simply by turning on the LED, instead of specifically notifying the user where the abnormality is. The user who notices the lighting of the LED notifies the serviceman of the TV receiver manufacturer that the LED indicating the abnormality is turned on. Then, the serviceman comes to repair the TV receiver.

[0004] In the conventional television receiver, the self-diagnosis processing can be constantly performed as described above. This is because the self-diagnosis processing for an analog block (part) that performs analog signal processing and analog image / audio processing can be performed in a short time. FIG. 9 shows a display of the self-diagnosis result for the analog section. As described above, this display is not directly seen by the user, but is displayed on the display unit of the television receiver in accordance with a predetermined operation of the service person.

In the self-diagnosis result of the analog block shown in FIG. 9, the first line of the diagnosis result is "2: + BOC".
P "is displayed. “2” in this row is a number for blinking the LED in, for example, 1 to 2 seconds. LE by user
If the user is informed that D is blinking twice, the service person can know what kind of abnormality has occurred. “+ B” indicates a deflection power supply, and together with “OCP” and “Over Current Protection” (preventing excessive current flow) that follow, means a diagnosis of “whether the deflection power supply has excessive current flow”. . When there is an abnormality in this diagnostic item, the number of times is indicated at the right end of the above-mentioned line.

The next line displays "3: + BOVP". “OVP” means “Over Voltage Protectio
n "(prevents excessive application of voltage), and blinking the LED three times in 1-2 seconds indicates a diagnosis of" whether the deflection power supply has been excessively applied ".
If there is actually an abnormality, the number of times is indicated at the right end of the line as described above.

[0007] In the next line, "4: V STOP" is displayed. “V” is a sink in the V direction,
When combined with "STOP", it indicates a diagnosis of "no sync in the V direction". Hereinafter, "5: AKB" and "6: A
-LOW-B "," 7: H STOP "," 8: DL "
OW-B "is displayed. “AKB” means “Auto Kin
e Balance ”(whether the cathode current is coming). “A-LOW-B” means “Analog Low B” (low voltage of + B or less). “H STOP” means “no sync in H direction”. “D-LOW-
B "means" DigitalLow B "(low voltage of + B or less).

[0008] Then, "WD" of "101: WDT"
“T” indicates “Watch Dock Timer” (counter of overall errors). In addition, numerals such as the total time during which the television receiver is on and the number of times power on / off has been performed are symbolized.

[0009]

At present, digital satellite broadcasting has been put to practical use. However, in a television receiver or a set-top box for receiving the digital satellite broadcasting, the self-diagnosis processing function is required. Is difficult to perform regularly.

In order to receive digital satellite broadcasts,
For example, based on a command signal input by a remote controller, a desired video signal is selected from the distributed information, and when the selected channel broadcast is scrambled, the data is restored. Also,
It is necessary to incorporate an MPEG decoder for decoding MPEG data. These units (devices) handle digital data, and the number thereof is considerably large. Therefore, the self-diagnosis processing function performs self-diagnosis processing on a large number of digital blocks, requires complicated processing, and requires a short processing time as performed in the conventional analog block. Becomes difficult. Therefore, it is difficult for a set-top box for receiving digital broadcasting and a television receiver to constantly perform self-diagnosis.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and performs a self-diagnosis process for a device to be diagnosed for which it is difficult to perform a self-diagnosis on a regular basis when a failure occurs at all. It is an object of the present invention to provide a self-diagnosis processing device and method that can be performed.

[0012]

According to the present invention, there is provided a self-diagnosis processing apparatus for performing self-diagnosis processing on a portion to be diagnosed having a plurality of circuit blocks. Pressing state determination means for determining a pressing state of a predetermined button switch, self-diagnosis executing means for executing self-diagnosis processing on the plurality of circuit blocks, and a self-diagnosis processing result executed by the self-diagnosis execution means Execution result processing means for judging whether the self-diagnosis is executed by the self-diagnosis execution means based on the judgment result of the pressed state judgment means, or It is selectively determined whether to display the determination result stored in the execution result processing means on the display unit.

In this self-diagnosis processing apparatus, when the execution result processing means determines that there is an error in the self-diagnosis processing executed by the self-diagnosis execution means, the display section displays the self-diagnosis processing result. Further, when the execution result processing means determines that the self-diagnosis executed by the self-diagnosis execution means is normal, the power supply of the part to be diagnosed having the plurality of blocks is reset. Further, when the pressed state determination means determines that the continuous pressing time of the predetermined button switch is shorter than the predetermined time, the self-diagnosis execution means performs a self-diagnosis process on the diagnosis target portion including the plurality of circuit blocks. Execute. Further, when the pressed state determination means determines that the predetermined button switch pressing duration is longer than the predetermined time, the execution result processing means displays the stored determination result on the display unit.

In order to solve the above-mentioned problems, a self-diagnosis processing method according to the present invention provides a self-diagnosis processing method for performing a self-diagnosis processing on a diagnosis target portion having a plurality of circuit blocks. A pressed state determining step of determining a pressed state of the switch; and a self-diagnosis executing step of performing a self-diagnosis process on a diagnosis target portion including a plurality of circuit blocks based on the pressed state determined by the pressed state determining step. An execution result processing step of determining the result of the self-diagnosis processing executed in the self-diagnosis execution step and storing the determination result; and a self-diagnosis displaying the self-diagnosis result stored in the execution result processing means on a display unit. And a result display step.

The self-diagnosis result display step of the self-diagnosis processing method displays the judgment result stored in the execution result processing means on a display unit based on the judgment result of the pressing state judgment step. When the execution result processing step determines that there is an error in the self-diagnosis processing executed in the self-diagnosis execution step, the self-diagnosis result display step causes the display unit to display the self-diagnosis result. In addition, when the execution result processing step determines that the self-diagnosis executed in the self-diagnosis execution step is normal, the power supply of the part to be diagnosed including the plurality of circuit blocks is reset. In addition, when the pressing state determination step determines that the pressing duration of the predetermined button switch is shorter than the predetermined time, the self-diagnosis execution step executes a self-diagnosis process on the diagnosis target portion including the plurality of circuit blocks. I do. When the pressing state determination step determines that the pressing duration of the predetermined button switch is longer than a predetermined time, the self-diagnosis result displaying step displays the determination result stored in the execution result processing step on a display unit. To be displayed.

In the present invention, the digital self-diagnosis processing is performed by using the reset button instead of performing the self-diagnosis routinely and automatically. The method of using the reset button is, for example, such that when the user feels that the operation is strange when viewed from a BS digital broadcast, for example, when the remote control or the main body keys do not work or the user operates strangely, the reset button is pressed. .

When the reset button is pressed, a digital self-diagnosis process is performed. If there is an abnormality in the device, the LED blinks and information as to which device has an error is displayed on the screen of the digital self-diagnosis result. Display and inform the user. When the reset button is pressed and the digital self-diagnosis processing is performed, if there is no abnormality in the device, only the normal power supply reset is performed without displaying the digital self-diagnosis result.

As described above, the present invention realizes the multiplexing of the functions of displaying the self-diagnosis result and normal reset according to the result of the digital self-diagnosis processing in response to the operation of one reset button.

When the reset button has been pressed for a long time (for example, after being pressed for more than 3 seconds and then released), the previous digital self-diagnosis result is displayed without performing the digital self-diagnosis processing. This realizes different digital self-diagnosis processing depending on how a single button such as a reset button is pressed (depressed length).

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a self-diagnosis processing apparatus and method according to the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of the self-diagnosis processing device 10. The self-diagnosis processing device 10 performs a self-diagnosis process on a plurality of circuit blocks inside the set-top box, for example, using a set-top box described later as a diagnosis target unit 20.

For this reason, the self-diagnosis processing device 10 includes a predetermined reset button (not shown), a button press determination unit 11 for detecting the pressed state of the predetermined reset button, and a self-diagnosis execution unit 12 for executing the self-diagnosis process. And an execution result processing unit 13 for determining a self-diagnosis process and storing the determination result, and a diagnosis target unit 20 including a plurality of circuit blocks.
Power supply resetting unit 14 for performing a reset process for turning off the power supply once and immediately starting up the power supply, and a display control unit 1
5 and a display unit 16.

The button pressing determining section 11 measures the duration of the pressed state of the reset button, and issues a signal (eg, “1”) indicating that the pressed state has been continued for more than 3 seconds, for example. When it is determined that the pressed state of the reset button is shorter than three seconds, a signal (for example, “0”) indicating that state is issued.

The self-diagnosis execution unit 12 is a
Perform self-diagnosis on multiple devices. The self-diagnosis performed here differs depending on the diagnosis target unit 20. For example, for a set-top box or a television receiver compatible with digital broadcasting, the self-diagnosis is performed for each device and function that constitute them. Will be

The execution result processing unit 13 includes a self-diagnosis execution unit 1
The self-diagnosis processing executed in step 2 is determined and stored in a built-in memory. The process of storing the self-diagnosis determination result in the memory is a method of storing the result as a history, not rewriting. If the error is normalized by the serviceman, each item may be deleted.

When the execution result processing unit 13 determines that there is an error in the self-diagnosis processing executed by the self-diagnosis execution unit 12, the execution result processing unit 13 displays the self-diagnosis result on the display unit 16 via the display control unit 15. Display. The execution result processing unit 1
When it is determined that the self-diagnosis executed in step 2 is normal, the power reset unit 14 resets the power of the diagnosis target unit 20.

The display unit 16 shares the monitor of the television receiver connected to the set-top box, for example, when the diagnosis target unit 20 is a set-top box. Further, when the diagnosis target unit 20 is the television receiver itself, the monitor unit is shared.

Next, the operation of the self-diagnosis processing device 10 having the above configuration will be described with reference to the flowchart of FIG.
This operation starts when the reset button is pressed. For example, the user is watching a BS digital broadcast, but is asked to press the reset button when the remote control or the main body keys become ineffective or the operation is strange.

First, in step S1, the self-diagnosis processing device 10 measures the duration of the pressed state of the reset button by using the button pressing determining unit 11, and determines whether the pressed state has been continued for 3 seconds or more. I do. If it is determined that the duration of the pressed state of the reset button is less than 3 seconds (N
O), a signal “0” indicating that is sent to the self-diagnosis execution unit 12, and the process proceeds to step S2. FIG. 1 shows the processing by this branch as (1). If it is determined in step S1 that the reset button has been pressed for 3 seconds or longer (YES), a signal "1" indicating this is sent to the execution result processing unit 13, and the process proceeds to step S3 described below. FIG. 1 shows the processing by this branch as (2).

At step S2, the self-diagnosis processor 10
Executes a self-diagnosis process using the self-diagnosis execution unit 12. The self-diagnosis processing differs depending on the diagnosis target unit 20 as described above. For example, for a set-top box or a television receiver compatible with digital broadcasting,
As shown in FIG. 6, which will be described later, the information is displayed in units of boards or blocks in digital blocks constituting them.

At step S3, the self-diagnosis processor 10
Displays the self-diagnosis result using the execution result processing unit 13. The self-diagnosis result displayed at this time is a past result that has already been determined in the execution result processing unit 13 and stored in the built-in memory.

At step S4, the self-diagnosis processor 10
Causes the execution result processing unit 13 to determine the result of the self-diagnosis processing performed in step S2. If it is determined that there is an error in the self-diagnosis process (YES), the execution result processing unit 13 blinks an LED (not shown) via the display control unit 15 and then performs the process of step S5. If it is determined that the self-diagnosis is normal (NO), the process proceeds to step S6.

At step S5, the self-diagnosis processor 10
Displays the self-diagnosis result including the error information determined by the execution result processing unit 13 on the display unit 16 via the display control unit 15 as shown in FIG.

At step S6, the self-diagnosis processor 10
Causes the power reset unit 14 to reset the power of the diagnosis target unit 20 via the execution result processing unit 13 and then displays the normal screen.

As described above, the self-diagnosis processing device 10 executes the self-diagnosis processing when the reset button is continuously pressed for less than 3 seconds, and then executes the self-diagnosis processing according to the result of the self-diagnosis processing. Then, the display of the self-diagnosis processing result and the function of power reset are selectively executed.

When the reset button is continuously pressed for three seconds or more, the result of the previous self-diagnosis processing is displayed as the self-diagnosis result. This is because when the user turns off and on the power of the diagnosis target unit 20 after the above step S5, even if the error has been normalized, the past error record is left, and the type of error that has occurred. To clarify.

Hereinafter, two specific examples of the part to be diagnosed incorporating the self-diagnosis processing device 10 as the self-diagnosis processing unit 10 will be described. A first specific example is a set-top box 3 shown in FIG.
0, and the second specific example is the digital broadcast compatible television receiver 50 constituting the digital broadcast receiving system shown in FIG.

First, a digital broadcast receiving system incorporating the set-top box 30 of the first specific example will be described. In FIG. 3, the set-top box 30 demodulates a signal received via a satellite (broadcast satellite or communication satellite) not shown by the parabolic antenna 1 and supplies the demodulated signal to the television receiver 40.

The parabolic antenna 1 is an LNB (Low Noise)
e Block DownconVerter) 2, converts a signal from a satellite into a signal of a predetermined frequency, and sets the
0.

Since the set-top box 30 has a large number of devices for performing digital processing, as will be described later, it takes too much time to perform self-diagnosis by the self-diagnosis processing apparatus constantly as in the prior art. Would. Therefore, instead of performing the self-diagnosis routinely, the digital self-diagnosis processing using the reset button 31 is performed using the self-diagnosis processing unit 10.

The television receiver 40 also receives a terrestrial broadcast wave via the terrestrial broadcast reception antenna 3. The display unit 41 is used instead of the display unit 16 shown in FIG. 1 to display the self-diagnosis result by the self-diagnosis processing unit 10. As shown in FIG. 4, the television receiver 40 includes a signal processing circuit unit 42 that performs signal processing on a video signal supplied from the set-top box 30 and control data thereof, and the like. Image / audio processing unit 4 for processing the processed video data and audio signal
3, a display unit 41, a speaker 44, and a terrestrial broadcast tuner unit 45.

The signal processing circuit section 42 performs control for transmitting or receiving the video signal, audio signal, and data supplied from the set-top box 30, and controls for managing peripheral circuits. The signal processing circuit section 42 is divided into a digital block section and an analog block section.

The image / audio processing unit 43 performs predetermined signal processing on the video signal and supplies it to the display unit 41. The audio signal is also subjected to predetermined signal processing and supplied to the speaker 44. The image / audio processing unit 43 is also divided into a digital block unit and an analog block unit.

The terrestrial tuner unit 45 creates a video intermediate frequency signal from the broadcast wave received via the terrestrial wave antenna 3 and supplies it to the analog block unit of the signal processing circuit unit 42.

Next, a configuration example of the set top box 30 will be described with reference to FIG. The RF signal output from the LNB 2 of the parabolic antenna 1 is
The tuner 101 is supplied to the tuner 101 and demodulated. The output of the tuner 101 is supplied to a QPSK demodulation circuit 102 where it is subjected to OPSK demodulation. The output of the QPSK demodulation circuit is
The error is supplied to the error correction circuit 103, where the error is detected and corrected, and corrected if necessary.

IC consisting of CPU, ROM, RAM, etc.
CAM (Conditional Acce)
The ss module) 113 stores a key necessary for decrypting a cipher together with a decryption program. Since the signal transmitted via the satellite is encrypted, a key and a decryption process are required to decrypt the code. Therefore, the CAM is transmitted via the card reader interface 112.
This key is read out from 113 and demultiplexer 1
04. The demultiplexer 104 uses the key to decrypt the encrypted signal.

The CAM 113 stores a key and a decryption program necessary for decryption, as well as billing information.

The demultiplexer 104 receives a signal output from the error correction circuit 103 of the front end 100 and converts the signal into a data buffer memory (SRAM) 11.
5 once. Then, this is read out appropriately, the decoded video signal is supplied to the MPEG video decoder 105, and the decoded video signal is supplied to the MPEG audio decoder 106.

The MPEG video decoder 105 appropriately records the input digital video signal in the DRAM 105a, and executes a decoding process of the video signal compressed by the MPEG system. The decoded video signal is supplied to the NTSC encoder 107, and is converted into a luminance signal (Y), a chroma signal (C), and a composite signal (V) of the NTSC system. The luminance signal and the chroma signal are output as S-video signals via buffer amplifiers 108Y and 108C, respectively. Further, the composite signal is output via the buffer amplifier 108V.

The MPEG audio decoder 106 appropriately stores the digital audio signal supplied from the demultiplexer 104 in the DRAM 106a,
The decoding process of the audio signal compressed by the method is executed. The decoded audio signal is D /
The D / A conversion is performed by the A converter 110, the left channel audio signal is output via a buffer amplifier 111L, and the right channel audio signal is output via a buffer amplifier 111R.

The RF modulator 123 converts a composite signal output from the NTSC encoder 107 and an audio signal output from the D / A converter 110 into an RF signal and outputs the RF signal. In addition, this RF modulator 123
When the TV mode is set, the RF signal of the NTSC system input from an AV device such as a cable box is passed through and output to a VCR or another AV device as it is.

In the case of the set-top box 30, these video signals and audio signals are supplied to the television receiver 40 via the AV line.

The CPU 109 executes various processes according to a program stored in the ROM 117. For example, it controls the tuner 101, the QPSK demodulation circuit 102, the error correction circuit 103, and the like. Further, it controls the AV device control signal transmission / reception unit 121 and
, A predetermined control signal is output to another AV device, and a control signal from the other AV device is received.

A predetermined command can be input to the CPU 109 by operating an operation button switch on the front panel. In addition, an infrared signal transmitted when the remote commander is operated is received by the receiving unit, and a result of the received light is supplied to the CPU 109 so that a predetermined command can be decoded.

The demultiplexer 104 fetches EPG data and the like in addition to the MPEG video data and audio data supplied from the front end 100, and demultiplexes the EPG area 115 of the data buffer memory 115.
Supply to A and store. The EPG information includes information (for example, program channel, broadcast time, title, category, and the like) on a program of each broadcast channel from the current time to several tens of hours later. Since the EPG information is frequently transmitted, a sort table is created from the EPG data stored in the EPG area 115A, and the SRAM 11
6 is stored.

The EEPROM 118 appropriately stores data to be retained even after the power is turned off (for example, the reception history of the tuner 101 for four weeks, the channel number (last channel) received immediately before the power was turned off), and the like. You.

A reset button 31 is provided on the front panel of the set-top box 30 or another place. Pressing of the reset button 31 is detected by the CPU 109. Then, it is supplied to the self-diagnosis processing unit 10 via the CPU 109. Further, the reset button 31 may be directly connected to the button press determination unit 11 of the self-diagnosis processing unit 10.

Although the specific configuration of the set-top box 30 has been described above, each unit (device) handles digital data, and the number thereof is considerably large.

Therefore, the self-diagnosis processing section 10 performs the self-diagnosis processing in accordance with the flowchart shown in FIG.

As described above, this self-diagnosis processing is performed, for example, when the user watching BS digital broadcasting feels that the operation of the remote control or the set-top box main body keys has become ineffective and the reset button 31 has failed. Start by pressing.

The self-diagnosis processing unit 10 determines whether the button is pressed
When the self-diagnosis execution unit 12 determines that the duration of pressing the reset button 31 is less than 3 seconds, the self-diagnosis execution unit 12 detects an uncorrectable error for each board or block in each digital block inside the set-top box 30. A self-diagnosis process is performed to determine whether or not the voltage has occurred or whether the supply voltage and current are not excessive or insufficient.

Then, the result of the self-diagnosis processing is determined by the execution result processing unit 13. If an error or the like has occurred in the self-diagnosis, the set-top box 3
After blinking an LED (not shown) provided on the front panel of the television receiver 40, the self-diagnosis result is displayed on the television receiver 40.
Is displayed on the display unit 41.

FIG. 6 shows a digital block self-diagnosis result displayed on the display section 41. First, “model” is shown, and then “number” is shown. And "2D F
/ E block "," 3D BC block "," 4D
The self-diagnosis result is displayed for each board or block in each digital block such as "BP block" and "5DBF block". 2D, 3D,... 5D at the head of each item
Indicates the number of blinks of the LED.

If the self-diagnosis is normal, the self-diagnosis processing unit 10 causes the power reset unit 14 to reset the power of the set-top box 30 via the execution result processing unit 13. Then, the display unit 41 of the television receiver 40
To display the normal broadcast program screen.

If the button press determining unit 11 determines that the reset button 31 has been continuously pressed for 3 seconds or more, the self-diagnosis processing unit 10
The previous self-diagnosis result is displayed without performing the self-diagnosis processing.

As described above, the self-diagnosis processing unit 10 built in the set-top box 30 constituting the digital broadcasting system operates when the reset button 31 is continuously pressed for less than 3 seconds. After the diagnosis is executed, the display of the digital self-diagnosis processing result (FIG. 6) and the function of power supply reset are selectively executed.

When the reset button 31 is pressed for three seconds or more, the result of the previous self-diagnosis processing is displayed as the self-diagnosis result. This is because, when the user turns off the power of the diagnosis target unit and then turns it on again, even if the error has been normalized, the past error record is left to clarify the type of error that has occurred. .

Next, a digital broadcast receiving system in which the digital broadcast compatible television receiver 50 of the second specific example is incorporated will be described. As shown in FIG. 7, the digital broadcast compatible television receiver 50
Has a set-top box 30 and a self-diagnosis processing unit 1
0 'is built-in. Then, a signal received via a satellite (broadcast satellite or communication satellite) not shown by the parabolic antenna 1 is demodulated by a built-in set-top box 30,
The information is displayed on the display unit 52 of the television receiver 50.

The television receiver 50 also receives a terrestrial broadcast wave via the terrestrial broadcast reception antenna 3. The display unit 52 displays the self-diagnosis result by the self-diagnosis processing unit 10 'to display the display unit 16 shown in FIG.
Used instead of This television receiver 50 includes:
As shown in FIG. 8, a signal processing circuit unit 53 that performs signal processing on a video signal supplied from the built-in set-top box 30 and its control data, and the like. An image / audio processing unit 54 for processing an audio signal, a display unit 52, a speaker 55,
Terrestrial broadcast tuner section 56 and self-diagnosis processing section 10 '
And

The configuration and operation of each part are the same as described above, and the description is omitted here. However, the self-diagnosis processing unit 10 'does not diagnose only the digital blocks of the set-top box 30 but the digital blocks of the signal processing circuit unit 53 and the image / audio processing unit 54. Then, a self-diagnosis is performed for each digital block, and the result is displayed as a digital self-diagnosis result as shown in FIG.

The self-diagnosis processing section 10 'also has a self-diagnosis function for analog blocks. Signal processing circuit section 5
3. Image / audio processing unit 54 and terrestrial tuner unit 56
The self-diagnosis processing section 1
Self-diagnosis is constantly performed by the analog block diagnostic unit of 0 '. The analog block self-diagnosis result is shown in FIG.
And is displayed on the display unit 52.

As described above, the self-diagnosis processing unit 10 ′ built in the digital broadcasting compatible television receiver 50 constituting the digital broadcasting system continuously depresses the reset button 51 for less than 3 seconds. When the self-diagnosis is performed, the digital self-diagnosis is executed, and the display of the digital self-diagnosis processing result (FIG. 6) and the function of power supply reset are selectively executed.

When the reset button 51 is continuously pressed for three seconds or more, the result of the previous self-diagnosis processing is displayed as the self-diagnosis result. This is because, when the user turns off the power of the diagnosis target unit and then turns it on again, even if the error has been normalized, the past error record is left to clarify the type of error that has occurred. .

It should be noted that the self-diagnosis processing apparatus of the present invention includes the set-top box 30 and the television receiver 50 described above.
Not only a device to be diagnosed but also any device that has a plurality of digital blocks and has a long self-diagnosis time may be used.

Further, the self-diagnosis processing apparatus of the present invention may be constituted by a microcomputer that executes the self-diagnosis processing method of the present invention as a program. That is, a pressing state determining step of determining a pressing state of the reset button, a self-diagnosis executing step of performing self-diagnosis on a plurality of circuit blocks based on the pressing state determined in the pressing state determining step, Display the self-diagnosis result stored in the execution result processing step based on the pressed state determined in the pressed state determination step and the execution result processing step of determining and recording the result of the self-diagnosis performed in The self-diagnosis processing program is executed by a microcomputer. With such a self-diagnosis processing device, the hardware configuration can be simplified.

[0076]

The self-diagnosis processing device according to the present invention allows the self-diagnosis execution means to execute self-diagnosis on a plurality of circuit blocks based on the pressing state of a predetermined button switch, or stores it in the execution result processing means. Since the self-diagnosis result is displayed on the display unit, the self-diagnosis processing can be reliably performed on the device to be diagnosed for which it is difficult to perform the self-diagnosis on a steady basis when any trouble occurs. .

According to the self-diagnosis processing method according to the present invention, the self-diagnosis execution step executes the self-diagnosis for a plurality of circuit blocks based on the pressed state of a predetermined button switch, or the self-diagnosis processing step stores the self-diagnosis in the execution result processing step. Since the self-diagnosis result is displayed on the display unit, self-diagnosis processing can be reliably performed on a device to be diagnosed for which it is difficult to perform self-diagnosis on a regular basis when any trouble occurs.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a self-diagnosis processing device.

FIG. 2 is a flowchart for explaining the operation of the self-diagnosis processing device.

FIG. 3 is a diagram showing a first example of a part to be diagnosed incorporating a self-diagnosis processing unit.
It is a figure which shows the set-top box of a specific example as a part which comprises a digital broadcast receiving system.

FIG. 4 is a block diagram showing an internal configuration of each section of the digital broadcast receiving system.

FIG. 5 is a block diagram showing a detailed configuration of the set-top box.

FIG. 6 is a diagram illustrating a digital self-diagnosis processing result performed by a self-diagnosis processing unit.

FIG. 7 illustrates a second example of a diagnosis target unit including a self-diagnosis processing unit.
A digital broadcast compatible television receiver of a specific example
It is a figure shown as a part which constitutes a digital broadcast receiving system.

FIG. 8 is a block diagram of the digital broadcast compatible television receiver shown in FIG. 7;

FIG. 9 is a diagram showing a result of analog block self-diagnosis.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Self-diagnosis processing device (part), 11 Button pressing judgment part, 12 Self-diagnosis execution part, 13 Execution result processing part, 1
4 power reset unit, 15 display control unit, 16 display unit,
20 part to be diagnosed

Claims (11)

[Claims] 1. A self-diagnosis processing device for performing a self-diagnosis process on a diagnosis target portion having a plurality of circuit blocks, wherein a pressed state determination means for determining a pressed state of a predetermined button switch; A self-diagnosis execution unit for executing a self-diagnosis process on the input device; Based on the result of the determination, selectively whether to cause the self-diagnosis executing means to execute the self-diagnosis for the plurality of circuit blocks, or to display the judgment result stored in the execution result processing means on a display unit. A self-diagnosis processing device characterized in that: 2. The self-diagnosis processing result is displayed on a display unit when the execution result processing means determines that there is an error in the self-diagnosis processing executed by the self-diagnosis execution means. 2. The self-diagnosis processing device according to 1. 3. When the execution result processing means determines that the self-diagnosis executed by the self-diagnosis execution means is normal, the power supply of the part to be diagnosed having the plurality of circuit blocks is reset. 2. The method according to claim 1, wherein
The self-diagnosis processing device as described. 4. The self-diagnosis execution means, when the pressed state determination means determines that the duration of pressing of the predetermined button switch is shorter than the predetermined time, determines whether the self-diagnosis execution section has a plurality of circuit blocks. 2. The self-diagnosis processing device according to claim 1, wherein the self-diagnosis processing device executes a diagnosis process. 5. When the pressed state determining means determines that the pressing duration of a predetermined button switch is longer than a predetermined time, the execution result processing means displays the stored determination result on a display unit. The self-diagnosis processing device according to claim 1, wherein 6. A self-diagnosis processing method for performing self-diagnosis processing on a part to be diagnosed having a plurality of circuit blocks, comprising: a pressing state determining step of determining a pressing state of a predetermined button switch; A self-diagnosis execution step of performing a self-diagnosis process on a portion to be diagnosed having a plurality of circuit blocks based on the pressed state determined by the determination step; and determining a result of the self-diagnosis process executed in the self-diagnosis execution step. A self-diagnosis processing method comprising: an execution-result processing step of storing a judgment result as a result; and a self-diagnosis result display step of displaying a self-diagnosis result stored in the execution result processing means on a display unit. 7. The self-diagnosis result display step displays the judgment result stored in the execution result processing means on a display unit based on the judgment result of the pressing state judgment step. 6. The self-diagnosis processing method according to 6. 8. When the execution result processing step determines that there is an error in the self-diagnosis processing executed in the self-diagnosis execution step, the self-diagnosis result display step displays a self-diagnosis result on a display unit. The self-diagnosis processing method according to claim 6, wherein 9. When the execution result processing step determines that the self-diagnosis performed in the self-diagnosis execution step is normal, the power supply of the part to be diagnosed including the plurality of circuit blocks is reset. 7. The method according to claim 6, wherein
Self-diagnosis processing method as described. 10. The self-diagnosis execution step, when the pressing state determination step determines that the duration of pressing the predetermined button switch is shorter than the predetermined time, performs a self-diagnosis on the diagnosis target portion including the plurality of circuit blocks. The self-diagnosis processing method according to claim 6, wherein the processing is executed. 11. The self-diagnosis result display step, when the pressed state determining step determines that the predetermined button switch pressing duration is longer than a predetermined time, is stored in the execution result processing step. The self-diagnosis processing method according to claim 6, wherein is displayed on the display unit.