JP2005038492A - Identification method for mounting parts of electronic device, and electronic device which can identify mounting parts - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for identifying mounting parts mounted on an electronic device by a simple configuration and easy work, and an electronic device in which mounting parts can be easily identified. <P>SOLUTION: An identification resistor R having different resistance values for each version information of a circuit board 22 internally connected between the first pin 18a1 and the third pin 18a3 which are empty terminals on equipment function of an interface section 18 of the FDD drive 10. An identification circuit including the resistor R is formed by a tester 24 through the first pin 18a1 and the third pin 18a3. The resistor R is identified based on the output result outputted from the identification circuit, and based on the identification result, version information of a circuit board 22 is specified and the circuit board 22 is identified. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device mounted component identification method and an electronic device capable of identifying a mounted component, and in particular, an identification method capable of identifying a mounted component mounted on an electronic device with an easy configuration and an identifiable electronic device. It relates to the improvement of equipment.
[0002]
[Prior art]
An electronic device is configured by a combination of various components (mounted components). When manufacturing an electronic device, there are cases where parts having the same function are purchased from a plurality of suppliers due to the delivery time and cost of the parts. In this case, the parts used for each supplier (parts constituting the mounted parts that are assemblies) may be different, and the shape and the like may be slightly different. When such a mounted component called an equivalent product is mounted on an electronic device, performance that can be regarded as the same within the desired specifications can be exhibited, but strictly speaking, another mounted component is used. In addition, since the performance of parts and the cost reduction are carried out every day even at the same supplier, the same functions are strictly used different parts depending on the time of purchase.
[0003]
As described above, although it is strictly another mounted component, it is difficult to distinguish an electronic device manufactured by combining components having the same function in appearance. In general, when a failure occurs in an electronic device, a failure of a specific part is the cause. As mentioned above, even if parts with the same function have different suppliers or have different purchase times, parts with the same function are strictly different types of mounted parts. In many cases, it is a mounted part purchased from a certain supplier or a mounted part purchased at a certain time.
[0004]
In such a case, in order to classify the electronic device in which the problem occurs, it is necessary to disassemble the electronic device and directly check the version information of the mounted component to obtain detailed data of the component. In other words, the electronic device has to be disassembled to confirm the version, which is very troublesome.
[0005]
Further, even if no trouble occurs, for example, when it is desired to prepare a spare part, etc., it is preferable to prepare the same mounted part because it has compatibility with an external apparatus connected to an electronic apparatus on which the mounted part is mounted. Therefore, it is necessary to know detailed data of components such as installed version information. In this case as well, the electronic device must be disassembled, which is very troublesome.
[0006]
In response to such a requirement, for example, a dedicated memory is provided in the mounted component, the manufacturer and the manufacturing rod are stored, and the necessary data is read from the dedicated memory as necessary. In some cases, detailed data relating to a mounted component can be acquired without disassembling an electronic device (for example, Patent Document 1).
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 1-75400 [0008]
[Problems to be solved by the invention]
However, there is a problem that providing a dedicated memory complicates the configuration of the mounted component and hinders cost reduction of the mounted component because of version information and the like that are substantially unrelated to the performance of the mounted component. is there. In addition, a reader for reading necessary data from a dedicated memory, a writer for writing data, and the like are required, and handling is complicated.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic device mounting component identification method and an electronic device capable of identifying a mounting component that can identify the mounting component mounted on the electronic device with an easy configuration and easy operation. There is to do.
[0010]
[Means for Solving the Problems]
The present invention provides an identification method for identifying a mounted component mounted on the electronic device in an electronic device having an interface unit for connection with an external device, and having a different resistance value for each version of the mounted component. An identification resistor is internally connected to an empty terminal on the device function of the interface unit, and a step of connecting a tester forming an identification circuit including the identification resistor via the empty terminal, and an output from the identification circuit A resistance identification step for identifying the identification resistor based on the output result, and a component identification step for identifying the version of the mounted component and identifying the mounted component based on the resistance identification result. It is characterized by.
[0011]
Here, for example, the identification resistor may be provided with one end connected to an empty terminal and the other end grounded, or when there are a plurality of empty terminals, both ends may be connected to different empty terminals. .
[0012]
According to this configuration, the tester identification circuit is formed by using the resistor internally connected to the empty terminal on the device function of the interface unit. The version information of the mounted device can be recognized only by identifying the type of identification resistor by the identification circuit.
[0013]
According to the present invention, in the above configuration, when there are a plurality of vacant terminals to which the identification resistor is connected, the component identification step identifies the mounted component based on a combination of a plurality of resistors obtained in the resistance identification step. It is characterized by.
[0014]
According to this configuration, the number of mounted components can be easily increased by combining a plurality of resistors.
[0015]
The present invention is characterized in that, in the above configuration, the component identification step presents an identification result for each mounted component.
[0016]
For example, it is possible to easily and appropriately identify the mounted component by causing a specific LED to emit light, generating a specific beep sound, or presenting a specific message based on the determined resistance.
[0017]
According to the present invention, in an electronic device having an interface unit for connection with an external device, an identification resistor having a different resistance value for each version of the mounted component is internally connected to an empty terminal on the device function of the interface unit. It is characterized by that.
[0018]
According to this configuration, it is possible to easily provide the electronic device with version information of the mounted device by using an empty terminal on the device function of the interface unit, and it is possible to easily recognize the type of resistance via the interface unit. As a result, the version information of the mounted device can be obtained.
[0019]
In the above configuration, the present invention is characterized in that the version of the mounted component is indicated by a combination of a plurality of identification resistors.
[0020]
According to this configuration, the number of mounted components can be easily increased by combining a plurality of resistors.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention (hereinafter referred to as embodiments) will be described with reference to the drawings.
[0022]
FIG. 1 shows a general appearance of a built-in FDD drive 10 used in a personal computer (external device) or the like as an example of an electronic device to which the mounted component identification method of this embodiment is applied. FIG. 1A is a front view of the FDD drive 10, and FIG. 1B is a rear view. As shown in FIG. 1A, the front of the FDD drive 10 is provided with an insertion slot 12 into which the FDD is inserted, an eject button 14 of the FDD, an indicator indicating that the FDD is performing a read / write operation, and the like. . On the other hand, as shown in FIG. 1B, an interface unit 18 for connecting a data transfer cable, a power connector 20 for connecting a power cable, and the like are arranged on the rear surface. The interface unit 18 and the power connector 20 are electrically connected and fixed on a circuit board (PCBA: not shown) mounted on the FDD drive 10.
[0023]
Here, the interface unit 18 of the FDD drive 10 is composed of a plurality of terminal pins for data transmission / reception, but it is a 1 inch (2.54 cm) type FDD drive, which is usually 34 pins high in height. It is a 0.5 inch (1.27 cm) type FDD drive and consists of 26 pins. FIG. 1B shows a 34-pin type. In the 34-pin type interface, the first, third, fifth, and sixth pins are normally unused terminals (not used for the function of the FDD drive 10). In the 26-pin type interface, the 7th pin is an unused empty terminal. However, the vacant terminal of the 26-pin type interface may differ depending on the model.
[0024]
As described above, in the FDD drive 10 as well, mounted components (for example, circuit boards) are purchased from a plurality of suppliers even if they have the same function because of delivery time and cost. Therefore, even if it has the same function and can be assembled to the FDD drive 10, there are cases where each component constituting the mounted component is different or the compatibility with the external device to be connected is slightly different. . In such a situation, when preparing a spare part of a mounted part actually mounted on the FDD drive 10 or creating a specification, detailed information on the mounted part is required. The detailed information of the mounted component is, for example, version information assigned to each mounted component. Normally, the version information is written on the mounted component in a series of symbols, alphanumeric characters, etc., and itself indicates the date of manufacture, the production line, the rod number, the used component parts, etc. in addition to the model and product number. In addition, only the type of version is shown, and details such as model, product number, date of manufacture, production line, rod number, used components, etc. are assigned by a version correspondence table created separately. There is also.
[0025]
In the present embodiment, as means for expressing the above-described version information, identification resistors having different resistance values are assigned to the empty terminals for each version, connected internally, and the identification resistors are identified from the outside. Thus, the version information is recognized.
[0026]
FIG. 2 shows an example of the FDD drive 10 including a circuit board 22 having a 34-pin type interface unit 18. As described above, in the case of the 34-pin type, the first, third, fifth and sixth pins are vacant terminals. Accordingly, a resistor R having a resistance value corresponding to the version of the circuit board 22 is internally connected between the pin 18a1 as the first pin and the pin 18a3 as the third pin. As described above, the empty terminal is an unused terminal in terms of its function in the FDD drive 10, so even if the resistor R is connected to this empty terminal, there is no interference with the function of the FDD drive 10.
[0027]
FIG. 2 also shows a conceptual configuration of a tester 24 that identifies the resistance R for version identification and identifies the version of the mounted component. The tester 24 includes an open circuit 26 having contacts 24a and 24b that can contact, for example, the pins 18a1 and 18a3 of the interface unit 18 at both ends. An internal resistor R1 and a power source 28 are connected in series to the open circuit 26. Therefore, by connecting the contacts 24a and 24b to the pin 18a1 and the pin 18a3, respectively, a closed identification circuit including the identification resistor R is formed. The tester 24 includes a plurality of sets of LEDs 32 in which a comparator 30 is connected in series between the contact 24b and the internal resistance R1 (in the case of FIG. 1, as an example, 30a-32a, 30b-32b, 30c- 3 sets of 32c) are connected in parallel. The reference voltages of the comparators 30a to 30c are different from each other. As is apparent from FIG. 2, resistors R having different resistance values connected according to versions are connected to the circuit board 22 side. When the tester 24 is connected, an identification circuit including a resistor R is formed. In this case, the voltage at the point A in FIG. Since each of the comparators 30a to 30c has a different reference voltage, one of the LEDs 32a to 32c is turned on according to the resistor R internally connected to the circuit board 22.
[0028]
That is, the resistance R can be determined depending on which LED 32a to 32c is lit. Then, by referring to a correspondence table or the like that associates the resistance R and the version information of the mounted component created separately, the version information of the mounted component can be easily recognized without disassembling the FDD drive 10. .
[0029]
FIG. 3 shows an example using the FDD drive 10 including a circuit board 22 having a 26-pin type interface unit 18. As described above, in the case of the 26-pin type, the empty terminal is only the pin 18a7 that is the 7th pin. Therefore, in this case, the version identification resistor R internally connected to the circuit board 22 has one end connected to the pin 18a7 and the other end grounded. On the other hand, in the tester 34, a contact 34a, an internal resistor R1, and a power source 28 are connected in series, and an end is grounded. Then, the voltage between the contact 34a and the internal resistance R1 is measured. Also in this case, since the voltage detected by the voltmeter 36 differs depending on the resistance value of the resistor R which is different for each version connected to the circuit board 22 side, the resistor R can be identified from the result. . Then, by referring to a correspondence table that associates separately created voltage values (resistance values) and version information of mounted components, the version information of mounted components can be easily recognized without disassembling the FDD drive 10. can do.
[0030]
The resistance value indicated by the resistor R needs to be set individually for each version of the circuit board, but each resistor is inexpensive and has many types of resistance values. Various combined resistance values can be obtained by combining a plurality of resistors. Also, since the connection method is extremely easy and simple, it is possible to easily cope with the number of versions to be identified. Further, for example, in the case of the 34-pin type interface unit 18, the vacant terminals are the first, third, fifth and sixth pins. Therefore, in FIG. 2, the selected pins are the 1st pin and the 5th pin, or the resistor R is provided between the 1st and 3rd pins and between the 5th and 6th pins, and the combination of the respective resistance values is a version. By assigning, the number of assigned versions can be easily increased. In this case, the type of identification can be further increased by setting the resistance R between the first and third pins and between the fifth and sixth pins to have the same resistance value or different resistance values.
[0031]
In the example of FIG. 2, an example in which the LED 32 emits light by the voltage at the point A is shown. However, a buzzer or the like is used instead of the LED 32 to generate different types of beep sounds or different sounds. Also good. Further, the detailed information may be displayed on a display or the like based on the specified version of the mounted device.
[0032]
In the present embodiment, the FDD drive 10 is shown as an example of the electronic device. However, the electronic device is applicable to any electronic device as long as the electronic device is mounted with a circuit board including the interface unit 18 having an empty terminal. As in the present embodiment, without disassembling the electronic device, and without complicating the configuration of the mounted component, it is possible to have the electronic device with version information of the mounted component easily and at low cost. The version can be easily recognized.
[0033]
【The invention's effect】
As described above, according to the present invention, by using different identification resistors for different versions internally connected to the empty terminals on the device functions of the interface unit of the electronic device, the mounted components mounted on the electronic device An identification circuit is formed. Then, by identifying the identifying resistor, it becomes possible to recognize the version information of the mounted device, without disassembling the electronic device, and without complicating the configuration of the mounted component. It is possible to make the electronic device have version information easily and at low cost, and the version can be easily recognized.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for explaining a general appearance of an FDD drive.
FIG. 2 is an explanatory diagram illustrating a configuration of a 34-pin type interface unit that realizes a mounted component identification method according to the present embodiment and a schematic configuration of a tester used for identification.
FIG. 3 is an explanatory diagram illustrating a configuration of a 26-pin type interface unit that realizes the mounted component identification method according to the present embodiment and a schematic configuration of a tester used for identification.
[Explanation of symbols]
10 FDD Drive, 12 Insertion Port, 14 Eject Button, 18 Interface Unit, 18a Pin, 18a1 Pin 1, 18a3 Pin 3, 18a7 Pin 7, 20 Power Connector, 22 Circuit Board, 24, 34 Tester, 24a, 24b 34a contact, 26 open circuit, 28 power supply, 30, 30a-30c comparator, 32, 32a-32c LED, 36 voltmeter, R resistance, R1 internal resistance.

Claims (5)

In an electronic device having an interface unit for connection with an external device, an identification method for identifying a mounted component mounted on the electronic device,
A tester which forms an identification circuit including the identification resistor via the empty terminal by internally connecting an identification resistor having a different resistance value for each version of the mounted component to an empty terminal on the device function of the interface unit. Connecting steps,
A resistance identification step for identifying the identification resistor based on the output result output from the identification circuit;
Based on the resistance identification result, a component identifying step for identifying the mounted component and identifying the mounted component;
A method of identifying a mounted part of an electronic device, comprising: The method of claim 1, wherein
When there are a plurality of vacant terminals to which the identification resistors are connected, the component identification step performs component identification based on a combination of a plurality of resistors obtained in the resistance identification step. Part identification method. The method according to claim 1 or claim 2, wherein
The component identification step includes
An electronic device mounted component identification method, characterized in that an identification result is presented for each mounted component. In an electronic device having an interface unit for connecting with an external device,
An electronic device capable of identifying a mounted component, wherein an identifying resistor having a different resistance value for each version of the mounted component is internally connected to an empty terminal on the device function of the interface unit. The device according to claim 4, wherein
An electronic device capable of identifying a mounted component, wherein a version of the mounted component is indicated by a combination of a plurality of identification resistors.

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