KR20030005140A - Electric device having self-check function using I2C communication and method for self-checking - Google Patents

Abstract

PURPOSE: An electronic device having a self-diagnosis function using an I2 C communication and a method for a self-diagnosis thereof are provided to recognize information with respect to an inferior IC(Integrated Circuit) quickly. CONSTITUTION: An input unit(10) includes an inferior key(12) in order for a user of a technician of a device to request a display of an inferior IC. Sub controllers(20a-20e) are connected to a main controller(60) through a data line and a clock line(L2). If a call signal is received from the main controller(60) through inherent information of each sub controller(20a-20e), the sub controller(20a-20e) transmits a response signal corresponded to the call signal. An IC registration unit(30) registers inherent information with respect to each IC which communicates to the main controller(60). An inferior IC registration unit(40) registers information of an IC judged as an inferior IC. An LCD(50) displays information with respect to an inferior IC received from the main controller(60) on a screen. The main controller(60) performs a communication with the sub controllers(20a-20e) for controlling each function performing block connected to the sub controllers(20a-20e).

Description

Electric device having self-check function using I2C communication and method for self-checking}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device. In particular, a plurality of integrated circuits (ICs) including an integrated main controller and at least one subcontroller are mounted on a printed circuit board to perform communication with each other and to control functional blocks. The present invention relates to a control method of a device and an electronic device thereof.

Recently, at least several to several tens of IC chips are mounted on printed circuit boards (PCBs) in electronic products. Among these IC chips, sub-controllers are provided to directly control functional blocks such as a sound output unit, an amplifier, a servomotor, and the like, and a main controller for controlling each sub-controller. When the main controller attempts to operate each function execution block connected to the subcontroller, the main controller communicates with each subcontroller to control the function execution block. The communication generated between the ICs may be referred to as so-called I²C communication or I2C communication.

A brief description of the process of I²C communication between the main controller and the subcontroller follows.

First, the main controller calls the IC specific name (address) of the desired subcontroller to all the subcontroller ICs connected through the data line and the clock line. The subcontroller then sends an acknowledgment signal to the main controller. The main controller receiving the response signal determines that the corresponding subcontroller is capable of receiving data, and transmits control data regarding the function execution block. Then, the corresponding subcontroller controls the connected function execution block according to the transmitted control data.

However, in the conventional electronic device as described above, as the circuit configuration inside the device is IC, it has advantages such as miniaturization, light weight, and productivity. In addition, in the absence of equipment, there was a problem that it is difficult to improve the failure problem unless the entire device is changed. That is, in order to check the IC failure, technicians detect the IC terminal, which is estimated according to the operation state of the device, using equipment such as an oscilloscope. In this case, if the estimated failure of the IC is not detected, all ICs must be detected. There was a problem that the consumption of the service quality of the user is lowered due to the increased consumption.

An object of the present invention is to provide an electronic device having a self-diagnosis function and a control method thereof so that a user or a technician can quickly grasp information on the defective IC in order to solve the above problems.

1 is a schematic block diagram of an electronic device having a self-diagnostic function using ice square (I²C) communication according to the present invention,

FIG. 2 is a flowchart illustrating a control operation of the electronic device shown in FIG. 1.

* Description of the symbols for the main parts of the drawings *

10: input part 12: bad IC display request key

20: sub control unit 30: IC register

40: bad IC register 50: LCD

60: main controller L1: data line

L2: Clock Line

To achieve the above object, an electronic device having a self-diagnosis function using I²C communication of the present invention directly controls each function execution block connected to a system, and transmits a response signal for each uniquely called IC information call. At least one or more subcontrollers; A defective IC registration unit for storing unique information on the defective IC; A display unit which displays the information on the defective IC to be recognized externally; And a main controller which transmits a call signal to each of the sub-controllers periodically, registers the unique information in the defective IC register for the sub-controller that has no response to the call, and controls the sub-controller to be displayed on the display unit. Include.

The electronic device may further include an input unit for requesting display of the defective IC, and the main controller may display information on the defective IC stored in the defective IC registration unit when the display request of the defective IC through the input unit is detected. Control to be displayed. In this case, the display unit may be output as a screen, or may be output as a voice.

Self-diagnosis method of an electronic device according to the present invention for achieving the above object is a main controller and at least one sub-controller to perform ice square communication with each other, and configured to control the function execution block connected to each of the sub-controllers A method of self-diagnosis of an electronic device, the main controller periodically calling each of the sub-controllers through unique information; Determining whether there is a response from the corresponding subcontroller to the call through the unique information of each of the subcontrollers; If there is no response from the call target subcontroller, registering information on the call target subcontroller as a bad IC; And displaying the unique information of the registered defective IC.

Determining whether the called sub-controller is registered as a bad IC if there is a response to the call from the sub-controller in the above process; And deleting the registered information if the subcontroller responding to the call is registered as a bad IC.

In addition, the step of displaying the unique information of the defective IC registered during the process may include detecting whether there is a display request for the defective IC from the outside; And displaying a display request for a defective IC.

As described above, the electronic device and the control method of the electronic device can easily detect damaged IC information when the user or an after-service technician encounters an abnormal operation of the device, thereby saving time due to the improvement of the failure of the device.

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

1 is a schematic block diagram of an electronic device having a self-diagnostic function according to the present invention.

The electronic device includes an input unit 10, a sub-control unit 20 consisting of IC-controlled sub-controllers 20a to 20e, an IC register 30, a defective IC register 40, an LCD 50, and a main controller 60, respectively. ).

The input unit 10 is provided with a defective IC display request key 12 so that a user or a technician of the apparatus can request display of the defective IC.

The sub-control unit 20 is composed of ICized sub-controllers (20a ~ 20e) for controlling the function execution block (not shown), respectively, where each sub-controller (20a ~ 20e) and the main controller (50) The data line L1 and the clock line L2 are connected to each other. Each of the subcontrollers 20a to 20e has unique IC information, for example, an IC name, and when a call signal through its own information from the main controller 60 is received, a response corresponding to the call signal is received. Send a signal. The subcontrollers 20a to 20e may include a sound processor 20a, an amplifier adjusting unit 20b, a switching unit 30c, a servo controller 30d, an I / O expansion processor 30e, and the like depending on the device.

The IC registration unit 30 registers unique information for each IC that can communicate with the main controller 60.

The defective IC registration unit 40 registers information on the IC determined as a defective IC, and EEPROM (Electically Eraseble and Programmable ROM) may be used to register and delete information about the defective IC.

The LCD 50 displays information on the defective IC received from the main controller 60 on the screen.

The main controller 60 communicates with each of the sub-controllers 20a-20e to control each function execution block connected to each of the sub-controllers 20a-20e. Then, a call signal is periodically transmitted to each subcontroller 20a to 20e, and information about the subcontroller having no response to the call is registered in the defective IC registration unit 40. In addition, the main controller 60 controls so that the unique information on the defective IC is displayed on the LCD (50). Here, the display of the information about the defective IC allows the unique name of each IC to be displayed on the screen through an On Screen Display (OSD). In addition, the main controller 60 may display the information on the defective IC through the sound processing unit 30a and the amplifier 30b as a voice, and of course, both the screen display and the voice may be displayed. In addition, the main controller 60 may control the display of information on the defective IC to be displayed immediately upon detection of the defective IC, or may be controlled to be displayed only when there is a display request through the input unit 10.

FIG. 2 is a flowchart illustrating a control method of an electronic device according to the present invention shown in FIG. 1.

First, the main controller 60 periodically calls the sub-controllers 20a to 20e registered in the IC registration unit 30 (S10). Then, it is determined whether there is a response from each subcontroller 20a to 20e (S20). For example, when the sound processor 20a is called by the main controller 60, if there is no response from the sound processor 20a, the IC name of the sound processor 20a is registered in the bad IC register 40. (S21). On the other hand, when a response to the call is detected from the sound processing unit 20a, it is determined whether the sound processing unit 20a has been previously registered in the defective IC registration unit 40 (S30). At this time, if the sound processing unit 20a is registered as a bad IC in the bad IC registration unit 40, the main controller 60 deletes information on the sound processing unit 20a stored in the bad IC registration unit 40 (S40). . On the other hand, if the sound processing unit 20a is not registered as a bad IC in the bad IC register 40, the main controller 60 calls the next subcontroller, for example, the amplifier 20b or calls for all ICs. If it is finished, return to the default mode (S50).

In the process of diagnosing ICs mounted on the printed circuit board as described above, the main controller 60 may immediately display a defective IC on the display unit for the call target subcontroller that does not respond to the call (S22). In addition, when there is a display request (S60) for the defective IC through the input unit, the main controller may cause the defective IC to be displayed on the LCD 50 with reference to the defective IC register 40.

On the other hand, the display method for the defective IC can be displayed on the LCD 50, the name of the defective IC through the OSD, the voice for the IC stored in advance through the sound processing unit 20a and the amplifier (20b) Information can also be output by voice.

As a result, as described above, the electronic device of the present invention can easily grasp information on the defective IC from the outside, thereby reducing the detection time required for checking the defective IC as in the past to improve the defect of the apparatus. Will be.

The electronic device having the self-diagnosis function using the I²C communication according to the present invention as described above periodically diagnoses the damage to the provided ICs and displays information about the damage if it is damaged. It is possible to improve the quality of the product and to provide a quick service at the after-sales service site.

Claims (9)

At least one subcontroller that directly controls each function execution block configured to directly perform an operation according to a function, each of which transmits a response signal to a call of uniquely given IC information; A bad IC register for storing information on the bad IC; And And a main controller for transmitting the call signal to each of the subcontrollers through a connection line, and controlling the unique information to be registered in the defective IC register for the subcontroller having no response to the call. Electronics. The method of claim 1, It further includes a display unit for displaying the information about the defective IC to be recognized externally, The main controller is to control the display to be displayed on the display for the sub-controller does not respond to the call. The method of claim 2, It further includes an input unit for inputting a request command of the indication for the defective IC, And the main controller controls to display the information on the defective IC stored in the defective IC register in the display unit when a display request of the defective IC through the input unit is detected. The method according to claim 2, wherein And the display unit includes a screen display unit and / or a voice output unit for outputting information about the defective IC to a screen and / or a voice. The method of claim 1, The main controller periodically transmits a call signal to a sub-controller having unique information stored in the bad IC register. If there is a response to the call signal, the main controller deletes unique information of the sub-controller registered in the bad IC register. Electronic device characterized in that. At least one function execution block configured to directly perform an operation according to a function, at least one subcontroller respectively controlling the function execution block, and a function execution connected to each of the subcontrollers in communication with the subcontroller In the self-diagnosis method of the electronic device having a main controller to control the block, Transmitting a call signal from the main controller to each of the subcontrollers; Determining whether there is a response from the sub-controller to the call signal; And And if there is no response from the call target subcontroller, registering the call target subcontroller as a bad IC. The method of claim 6, And displaying the unique information of the registered defective IC if there is no response from the call target subcontroller. The method of claim 7, wherein Detecting whether there is a display request for the defective IC; And the displaying step is performed when a display request for a defective IC is detected. The method of claim 6, Determining whether the called sub-controller is registered as a bad IC if there is a response to the call from the sub-controller; And And deleting the registered information if the sub-controller responding to the call is registered as a bad IC.