KR970005810B1 - Automatic type error detection system - Google Patents

Abstract

A device which self-decides and displays the wrong movement in a circuit device having some equalizing output signal at normal movement. The device consists of : a multiple A/D converter which converts the output signal level from the circuit to the digital data ; a input part which inputs in order output data from the A/D converter having a multiple input port combined with the output of the A/D converter ; a first calculating part which adds the data inputted by the input part ; a first memory which stores the calculated results ; a second calculating part which averages the stored data in the first memory by the term unit ; a second memory which stores some output price at normal movement of the each circuit part ; an error decision part which decides the error existence of the standard data stored in the second memory and of the average form the second calculating part with some error extent ; an error display part which displays the error according to the results of the error decision part.

Description

Self error determination device

1 is a functional block diagram showing a main configuration of an error determining apparatus according to a first embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: Caption IC 2,4: A / D Converter

3: voice IC 5: input unit

6: microprocessor 7: error display

61: first operation unit 62: second operation unit

63: error determination unit 64: NVM (Non Volatile Memory)

65 control unit 66 RAM

67: third operation unit (MAX) 68: fourth operation unit (MIN)

The present invention relates to a self-error determining apparatus that is capable of diagnostically displaying a malfunction thereof in a circuit and an apparatus having a uniform level of uniform output signal during normal operation.

The home appliances used in the home can be seen as a coupling structure in which circuits and devices having respective functions are organically combined to perform specific functions, and each of these components has a uniform level of a uniform output signal during normal operation. There are things.

On the other hand, if some of these components malfunction and malfunction, not only the general user who does not have the expertise of the whole device, but also the personnel who are dispatched for repair and repair, may be able to search for many suspected faults. There was a inconvenience to check.

The present invention was created in view of the above circumstances, and an object of the present invention is to provide a self-error determination device capable of diagnosing and displaying a malfunction of a circuit and a device having a uniform level of uniform output signal during normal operation. There is this.

A self error determining apparatus according to the present invention for realizing the above object comprises a plurality of circuit sections having output signals of a predetermined level, comprising: a plurality of As for converting the levels of signals output from the respective circuit sections into digital data; An input unit for sequentially inputting output data from the A / D converter, having a plurality of input ports coupled to the outputs of the respective A / D converters, and a first operation unit for adding data input by the input unit. A second memory for averaging data stored in the first memory in a predetermined period unit, and a second output unit storing a predetermined output value during normal operation of each circuit unit. 2 memory, the reference data stored in the second memory and the average obtained by the second operation unit have an error range with a predetermined error range. And an error display unit for generating an error display in accordance with the determination result of the error determination unit.

In addition, it has a structure that checks the peak to peak voltage (Vp-p) of the signal by calculating two MAX and MIN.

According to the present invention having the above-described configuration, it is possible to self-diagnose and display the malfunction of circuits and devices having a uniform level of uniform output signal during normal operation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a functional block diagram showing the main configuration of the self error determination apparatus according to an embodiment of the present invention, the reference numeral 1 in the drawing is a CVI (Composite Video Input) signal is received based on the signal to the OSD generating device A caption IC that outputs a signal related to character display, 2 is an A / D converter that converts a CVI signal into a digital signal to determine a data error of the CVI signal applied to the caption IC, and 3 is a CHROMA IC. A voice IC for processing the separated voice signal, 4 is an A / D converter for converting the voice signal into a digital signal to determine the error of the voice signal applied to the voice IC, and 5 is the A / D converter 2, An input unit serving as an interface for receiving a digital signal output from 4).

Also, reference numeral 6 denotes a microprocessor, which adds data sequentially applied from the input unit 5 according to a control unit 65 for controlling the overall apparatus and a control signal of the control unit 65. The average value is calculated for every predetermined data interval to the addition result stored in the RAM 66 according to the control signal of the RAM 66 and the control unit 65 storing the first operation unit and the result calculated by the first operation unit. The second calculation section 62, Non Volatile Memory (NVM) 64 which stores the output value in normal operation as reference data, and the error range between the reference data stored in the NVM and the average value obtained by the second calculation section 62. The error determination unit 63 determines whether or not an error exists in the circuit bias voltage.

Reference numeral 7 denotes an error display unit for recognizing the user according to the determination result of the error determination unit 63.

Next, the operation of the device having the above configuration will be described.

First, the CVI signal applied to the caption IC 1 and the audio signal applied to the voice IC are converted into a digital signal by the A / D converter 2 and then applied to the input unit 5 to determine whether or not there is more. The signal applied to the input unit is transmitted to the first operation unit 61 according to the control signal from the control unit 65, added to the signal, and then stored in the RAM 66.

On the other hand, the addition result stored in the RAM is transmitted to the second operation unit 62 according to the control signal of the control unit 65 that detects that the predetermined number of addresses are filled, and the average value for the predetermined data interval is calculated, and the calculated average value is a circuit. The controller 65 determines whether the OSD is generated according to the determination result of the error determination unit 63 by determining whether the bias error determination unit 63 is present or not based on an error range with the output value during normal operation stored in the NVM 64. An error display 7 such as a device (not shown) is driven to make the user aware of it.

That is, according to the above embodiment, it is possible to self-diagnose and display the malfunction on the basis of the input average value in the normal operation.

The present invention is not limited to the above embodiments and can be variously modified without departing from the technical gist of the present invention. For example, the rated power level required for the normal operation of the circuit is stored in the NVM as reference data. It may be configured to determine whether or not an error is detected by detecting a power applied to the circuit based on the stored reference data.

As described above, according to the present invention, it is possible to realize a self error determining device that can diagnose and display the malfunction itself in a circuit and a device having a uniform level of uniform output signal during normal operation.

Claims (1)

A device having a plurality of circuit sections having an output signal of a predetermined level, comprising: a plurality of A / D converters for converting a level of a signal output from each circuit section into digital data, and combined with an output of each of the A / D converters A first input unit configured to sequentially input output data from the A / D converter, a first operation unit to add data input by the input unit, and a first operation unit to store calculation results of the first operation unit Memory, a second operation unit for averaging the data stored in the first memory in a predetermined period unit, a second memory for storing a predetermined output value as data in the normal operation of each circuit unit, the reference data stored in the second memory and the first The error determination unit which determines the presence or absence of an error with a predetermined error range and the average obtained by the Self-error detection device, characterized in that configured to include a display unit for generating an error la error display.