JP2017049633A - Software writing tool, software writing system and control method of software writing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a software writing tool which does not require a complicated mechanism such as a trigger switch or the like.SOLUTION: A software writing tool 100 comprises: a contact probe 110 which is connected to a CPU and comes into contact with a data communication terminal formed on a substrate; a first contact detection probe 120A and a second contact detection probe 120B which come into contact with a first ground point and a second ground point formed on the substrate, respectively; and a control unit which controls writing of a piece of software to a memory in the CPU, and detects contact and conduction of the first contact detection probe 120A and the second contact detection probe 120B with and to the first ground point and the second ground point, respectively. When detecting the contact and conduction of the first contact detection probe 120A and the second contact detection probe 120B with and to the first ground point and the second ground point, respectively, the control unit outputs a writing start trigger signal to a computer for work.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a software writing jig for writing software to an electronic component mounted on a substrate, for example, a memory of a CPU, a software writing system, and a method for controlling the software writing jig.

  A software writing system for writing software to a CPU memory as an electronic component mounted on a board includes a work computer storing software to be written to the CPU memory, and the software from the work computer. A software writing tool for receiving the data of the software and a software writing jig 800 for writing the software data output from the software writing tool into the memory. .

As shown in FIG. 7, the software writing jig 800 includes a substrate mounting table 810 on which a substrate is set, and a probe holding unit 820 that can move up and down with respect to the substrate mounting table 810. And a plurality of (eight in the drawing) contact probes 830 held by the probe holding portion 820, and a trigger switch 840 for detecting that the contact probes 830 are in contact with the data communication terminals formed on the substrate. And a control unit (not shown) for outputting a writing start trigger signal to the work computer when the trigger switch 840 is turned on.
There are various types of software writing jigs, and the software writing jig 800 in which the probe holding unit 820 can move up and down with respect to the substrate mounting table 810 is provided. It is called a press die.
Further, when the work computer receives the write start trigger signal, it outputs the stored software data to the software writing tool. The software writing tool that has received the software data writes the software into the CPU memory via the contact probe 830 of the software writing jig 800.

Writing to the memory of the CPU of the software is performed with the contact probe 830 in contact with the data communication terminal of the substrate. Note that the contact of the contact probe 830 with the data communication terminal is performed by moving the probe holding unit 820 toward the substrate set on the substrate mounting base 810.
On the other hand, the trigger switch 840 is a so-called micro switch, and is provided on the side surface side or the bottom surface side (side surface side in FIG. 7) of the probe holding unit 820, and the substrate on which the contact probe 830 is set on the substrate mounting base 810. When the contact is made with the data communication terminal, the plunger portion of the trigger switch 840 is also brought into contact with the reference surface 811 of the substrate mounting table 810 which is set flush with the substrate and is pressed. When the trigger switch 840 is turned on, the write start trigger signal is output.

  Further, as this kind of software writing jig, there is a “program writing device in electronic equipment” described in Japanese Patent Application Laid-Open No. 11-024915. Also in this “program writing device in electronic equipment”, as described in the paragraph numbers 0018 and 0020 of the specification, “the writing jig 1 has a master ROM 2 in which a control program to be corrected is stored, and the control from the master ROM 2. It consists of a microcomputer 4 that reads program data and transfers it to the television set 7 as serial data, and a start button (such as a switch) 3 that instructs on / off operation of the microcomputer 4 ”,“ Start of the writing jig 1 ” In response to the ON signal supplied from the button, the microcomputer 4 reads data from the master ROM 2 (steps S1 and S2). Next, the microcomputer 4 converts the data read from the master ROM 2 into serial data having a predetermined format, and supplies it to the RCA terminal 6 provided in the television set 7 via the cable 5 (step S3). ) ”Is configured.

Japanese Patent Laid-Open No. 11-024915

By the way, the trigger switch may be turned on even though the contact probe and the data communication terminal do not contact accurately. In addition, the trigger switch may not be turned on even though the contact probe and the data communication terminal are in accurate contact.
Such a situation occurs, for example, when the trigger switch mounting position of the trigger switch is misaligned, or when the substrate is not accurately set on the substrate mounting base.
In order to avoid such a situation, an adjustment mechanism for adjusting the mounting position of the trigger switch is provided in the probe holding portion. Since the structure of the adjusting mechanism is complicated, it is one of the factors that hinder the downsizing of the software writing jig. Further, adjustment of the trigger switch mounting position by the adjustment mechanism requires skill. For this reason, it is practically impossible to completely avoid the above situation.

  The present invention was devised in view of the above circumstances, and ensures that a write start trigger signal is output when a contact probe and a data communication terminal come into contact with each other, and a trigger switch and its adjustment mechanism There is no need to use such complicated and skillful adjustment mechanisms, and a software writing jig, software writing system, and software writing jig control method that can be downsized. It is intended to provide.

  A software writing jig according to the present invention is software stored in a work computer with respect to a memory of an electronic component mounted on a substrate and having an input / output terminal connected to a data communication terminal formed on the substrate. Is a software writing jig for writing through a software writing tool, and a contact probe that contacts the data communication terminal and a plurality of contacts that respectively contact a plurality of ground points formed on the substrate A detection probe; and a control unit that controls writing of software to a memory of the electronic component and detects contact and conduction to a plurality of ground points of the plurality of contact detection probes, and the control unit includes: If it is detected that a plurality of contact detection probes are brought into contact with a predetermined ground point and are conducted And it outputs the write start trigger signal for outputting the software data in the software writing tool with respect to the working machine in which the software is stored.

  The software writing system according to the present invention is a software writing system that writes software to a memory of an electronic component that is mounted on a substrate and whose input / output terminals are connected to data communication terminals formed on the substrate. A working computer storing software to be written in a memory of the electronic component, a software writing tool for receiving data of the software from the working computer, and a plurality of formed on the substrate Software having a plurality of contact detection probes each contacting a ground point and a control unit for controlling writing of software to the memory of the electronic component and detecting contact and conduction to the corresponding ground points of the plurality of contact detection probes Software writing jig, and the software When the control unit of the fitting jig detects that the plurality of contact detection probes are brought into contact with a predetermined ground point and is turned on, it outputs a write start trigger signal to the working computer. When the working computer receives the writing start trigger signal, the software data is output to the software writing tool, and the software writing tool outputs the received software data. The software writing jig outputs the software to the electronic component memory via the contact probe.

  Furthermore, the method for controlling a software writing jig according to the present invention provides a computer for work with respect to a memory of an electronic component mounted on a substrate and having an input / output terminal connected to a data communication terminal formed on the substrate. A method of controlling a software writing jig for writing stored software through a software writing tool, wherein the control unit includes a plurality of contact detection probes formed on the substrate, each corresponding ground. If it is detected that the point is brought into contact with the point, a writing start trigger signal for outputting the software data to the software writing tool is output to the working computer.

The software writing jig according to the present invention outputs a writing start trigger signal to a work computer when a plurality of contact detection probes come into contact with a plurality of corresponding ground points and become conductive. Therefore, the write start trigger signal is output only when the contact probe is in contact with the data communication terminal.
For this reason, if the contact probe and the data communication terminal are not in exact contact with each other, the writing start trigger signal is not output, so that the software can be reliably written to the memory of the electronic component. Yes.
In addition, it does not require position adjustment like a conventional trigger switch, and a complicated mechanism for position adjustment can be omitted, so it is for software writing used to write software to the memory of electronic components. The configuration of the jig can be simplified and the reliability can be improved.

1 is a schematic perspective view of a software writing jig according to an embodiment of the present invention. 1 is a schematic plan view of a substrate on which a CPU as an electronic component on which software is written by a software writing jig according to an embodiment of the present invention is mounted. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a drawing showing a procedure for writing software to a CPU as an electronic component in a software writing system using a software writing jig according to an embodiment of the present invention; It is a schematic perspective view which shows the state which set the board | substrate to. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a drawing showing a procedure for writing software to a CPU as an electronic component in a software writing system using a software writing jig according to an embodiment of the present invention; It is a schematic perspective view which shows the state which the contact probe etc. contacted to the data communication terminal etc. of the board | substrate set to (1). BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows the procedure for writing software to CPU as an electronic component in the software writing system using the software writing jig | tool which concerns on embodiment of this invention, Comprising: The same figure (A) is software. Schematic front view showing a state where a substrate is set on a wear writing jig. FIG. 4B shows a contact probe or the like first contacting the data communication terminal of the substrate set on the software writing jig. FIG. 4C is a schematic front view showing a state in which a contact probe or the like is sufficiently in contact with a data communication terminal or the like of a substrate set in a software writing jig. . 1 is a schematic block diagram of a software writing system using a software writing jig according to an embodiment of the present invention. It is a schematic perspective view of this kind of conventional software writing jig.

  A software writing jig 100 according to an embodiment of the present invention is mounted on a memory of a CPU 610 as an electronic component mounted on a substrate 600 and having an input / output terminal connected to a data communication terminal 620 formed on the substrate 600. On the other hand, a software writing jig for writing software stored in the work computer 200 via the software writing tool 300, which includes six contact probes 110 that contact the data communication terminal 620; The first contact detection probe 120A and the second contact detection probe 120B that contact the first ground point 630A and the second ground point 630B formed on the substrate 600, respectively, and the software to the memory of the CPU 610 Controlling writing, and the first contact detection probe 120A and And a control unit 130 that detects contact and conduction with the first ground point 630A and the second ground point 630B of the second contact detection probe 120B. The control unit 130 includes the first contact detection probe 120B. If it is detected that 120A contacts the first ground point 630A and the second contact detection probe 120B contacts the second ground point 630B and conducts, the work stored in the software is stored. A write start trigger signal 131 for outputting the software data 210 to the software writing tool 300 is output to the computer 200.

  Note that “software” in this specification is a concept including a program and data other than the program.

First, before describing the software writing jig 100 according to the embodiment of the present invention, a substrate 600 on which a CPU 610 as an electronic component is mounted will be described with reference to FIG.
The substrate 600 is a so-called printed wiring board, and in addition to the CPU 610, electronic components 650 such as a semiconductor memory element and various integrated circuits are mounted. The CPU 610 is electrically connected to various electronic components 650 and the like by printed wiring.
Among the input / output terminals of the CPU 610, those related to software input / output are connected to a data communication terminal 620 formed on the substrate 600.
As shown in FIG. 2, the data communication terminal 620 includes a plurality of (six in the drawing) land portions 621 arranged in a line at the edge portion of the substrate 600, and the land portions 621 and the front portion. It is comprised from the wiring pattern part 622 which connects between entry output terminals.

Further, a first ground point 630A and a second ground point 630B are formed on both sides of the land portion 621 of the data communication terminal 620, respectively. The first ground point 630A serves as both a power supply ground of the software writing jig 100 and a software data communication ground. The second ground point 630B is a ground dedicated for detecting contact with the substrate 600 of the second contact detection probe 120B of the software writing jig 100.
In addition, guide holes 640 that are through holes cut from the edges are formed on the outer sides of the first ground point 630A and the second ground point 630B, that is, on both sides. The guide hole 640 is a portion into which the upper guide pin 163 and the lower guide pin 151 are fitted.

As described above, the guide hole 640, the first ground point 630A, the land portions 621 of the six data communication terminals 620, the second ground point 630B, and the guide hole are formed on the edge of the substrate 600 from the right side in FIG. 640 is lined up in a horizontal row.
Note that four portions 660 in FIG. 2 are fixing screw holes when the substrate 600 is incorporated into an electronic device. Further, in FIG. 2, for the convenience of drawing, many displays of various electronic components are omitted, and many displays of the wiring pattern portion connecting the CPU 610 and each electronic component are omitted.

  The software writing jig 100 includes six contact probes 110 that contact the land portion 621 of the data communication terminal 620, and the first ground point 630A and the second ground point 630B formed on the substrate 600. The first contact detection probe 120A and the second contact detection probe 120B that are in contact with each other and the writing of software to the memory of the CPU 610 are controlled, and the first contact detection probe 120A and the second contact detection probe 120B are controlled. In addition to the control unit 130 for detecting contact and continuity of the first ground point 630A and the second ground point 630B, the substrate mounting table 150 on which the substrate 600 is set, and the substrate mounting table 150 are contacted. And a probe holding part 162 which can be moved away from each other.

  The substrate mounting table 150 is a portion on which the substrate 600 is set, and has a shape and size corresponding to the substrate 600 to be set. The board mounting table 150 includes an edge portion of the substrate 600, an edge portion where the land portion 621 of the data communication terminal 620 is formed, and the like so as not to interfere with an electronic component mounted on the back side of the substrate 600. Only the opposite edges are held. Accordingly, the substrate 600 set on the substrate mounting table 150 is in a state where most of the back side thereof is floated in a hollow state.

It should be noted that the substrate mounting table 150 can be appropriately replaced according to the shape and size of the substrate 600 to be set.
In such a case, the substrate 600 using the software writing jig 100 has the first ground point 630A and the second ground on both sides of the land portion 621 of the data communication terminal 620 regardless of the difference in shape and size. Two ground points 630B are formed, and guide holes 640, which are through holes cut from the edge portions, are formed outside the first ground point 630A and the second ground point 630B, respectively. Therefore, it is necessary to have a basic configuration in which each interval is also common.

In addition, two lower guide pins 151 are erected on the portion of the substrate mounting table 150 that holds the substrate 600, which also holds the edge portion where the land portion 621 and the like of the data communication terminal 620 are formed. ing. The two lower guide pins 151 are for positioning the substrate 600 with respect to the substrate mounting table 150.
Accordingly, the two lower guide pins 151 are formed in a size and a distance so as to fit into the two guide holes 640 formed at the edge of the substrate 600. In addition, the two lower guide pins 151 are set to dimensions so that the upper ends thereof are positioned approximately in the middle of the guide holes 640 when fitted into the guide holes 640 of the set substrate 600 (FIG. 3). FIG. 5 (A)).

The substrate mounting table 150 is assembled to the base portion 160. The base portion 160 includes a frame portion 161 and a probe holding portion 162 that is held so as to be movable up and down with respect to the frame portion 161.
The probe holding part 162 includes six contact probes 110 arranged in a row, a first contact detection probe 120A and a second contact detection probe 120B arranged on both sides thereof, and further on both sides thereof. A pair of arranged upper guide pins 163 is set. Of course, these arrangement patterns include the land portions 621 of the six data communication terminals 620 at the edge of the substrate 600, the first ground points 630A and the second ground points 630B arranged on both sides thereof, It is the same as the pair of guide holes 640 arranged on both sides.
The probe holding part 162 is configured to be locked at that position when lowered to the lowest position.

The contact probe 110 held by the probe holding unit 162, the first contact detection probe 120A, and the second contact detection probe 120B are connected to the control unit 130.
Note that the contact probe 110, the first contact detection probe 120A, and the second contact detection probe 120B have a pin-shaped tip contact portion, a tube in which the contact portion is inserted, a built-in tube, and the contact. It is composed of a spring that presses the portion outward, and a movable type is adopted in which the contact portion at the tip is advanced and retracted by the spring.
The contact probe 110, the first contact detection probe 120A, and the second contact detection probe 120B are dimensioned in such a manner that the contact portion at the tip first comes to the land portion 621, the first ground point 630A, and the second ground point 630B. In the contact state, the upper guide pin 163 and the lower guide pin 151 are not in contact with each other, and when the probe holding portion 162 is further lowered and the upper guide pin 163 and the lower guide pin 151 are in contact with each other, It is set so that the spring is pressed and contracted by a predetermined amount while the contact portion at the tip is in contact with the land portion 621 and the like.

  The six contact probes 110 supply power to the CPU 610, output a reset signal for writing timing to the CPU 610, output software data to be written, setting signals Each role is assigned. Of course, the arrangement corresponds to the role of the input / output terminals of the CPU 610 mounted on the substrate 600. Needless to say, the role of each contact probe 110 is appropriately changed according to the CPU 610 that writes the software. Therefore, depending on the type of CPU 610 that is mounted, the role may be assigned to all six contact probes 110 or the role may be assigned to only five or less contact probes 110.

  In the software writing jig 100, the first contact detection probe 120A is brought into contact with the first ground point 630A to be conductive, and the second contact detection probe 120B is brought into contact with the second ground point 630B. When the control unit 130 detects that it has become conductive, a writing start trigger signal 131 is output to a work computer 200 described later.

That is, the first contact detection probe 120A is not in contact with the first ground point 630A, or the second contact detection probe 120B is not in contact with the second ground point 630B. If it has occurred, the writing start trigger signal 131 is not output to the work computer 200.
If both contact detection probes 120A and 120B are in contact with both ground points 630A and 630B, the contact probes 110 positioned between the both contact detection probes 120A and 120B are respectively land portions of the corresponding data communication terminals 620. Since it is considered that the contact detection probe 120A, 120B is in contact with both ground points 630A, 630B, the write start trigger signal 131 is output for the first time. It is.

As shown in FIG. 6, the software writing jig 100 configured as described above is combined with a work computer 200 and a software writing tool 300 to form a software writing system 1000.
The work computer 200 stores software to be written in the memory of the CPU 610. The software writing tool 300 receives the software from the work computer 200 and converts the software data 210 into a format writable to the CPU 610 and outputs it to the software writing jig 100. To do.
Note that reference numeral 164 (shown in FIG. 4) in FIG. 6 is a guide rail that guides the vertical movement of the probe holding portion 162 of the software writing jig 100.

The operation of the above-described software writing jig 100 will be described together with the operation of the software writing system 1000 configured mainly.
First, the software writing jig 100 is set on the substrate mounting table 150. At that time, the lower guide pin 151 of the board mounting table 150 is set so as to fit into the guide hole 640 of the board 600. When the lower guide pin 151 is fitted in the guide hole 640, as shown in FIGS. 3 and 5A, the six land portions 621, the first ground point 630A, and the second ground point 630B of the substrate 600 are displayed. Are positioned directly below the six contact probes 110, the first contact detection probe 120A, and the second contact detection probe 120B of the software writing jig 100.

In this state, the probe holding part 162 is pushed down. First, as shown in FIG. 5B, the six contact probes 110 correspond to the corresponding land portions 621, the first contact detection probe 120A corresponds to the first ground point 630A, and the second contact detection probe 120B. Respectively touch the second ground point 630B. Further, when the probe holding portion 162 is pushed down, the contact portions at the tips of the contact probe 110, the first contact detection probe 120A, and the second contact detection probe 120B are acted on by the built-in springs, and the land portion 621, first contact The ground point 630A and the second ground point 630B are contacted with an appropriate contact pressure.
Further, as shown in FIG. 4 and FIG. 5C, the upper guide pin 163 is brought into contact with the lower guide pin 151 in the guide hole 640 at the same time when the contact probe 110 or the like is contacted with the land portion 621 or the like with an appropriate contact pressure. At the same time, since the probe holding portion 162 is locked at that position, excessive pressure contact of the contact probe 110 and the like with the land portion 621 and the like is prevented.

The first contact detection probe 120A is brought into contact with the first ground point 630A and the second contact detection probe 120B is brought into contact with the second ground point 630B, and is detected by the control unit 130. Then, the control unit 130 outputs a writing start trigger signal 131 to the work computer 200.
As described above, the write start trigger signal 131 is output in this state because the first contact detection probe 120A is at the first ground point 630A and the second contact detection probe 120B is at the second ground point. This is because the contact probes 110 formed side by side with the two contact detection probes 120A and 120B are surely in contact with the corresponding land portions 621 if they are brought into contact with each other at 630B. .
In addition, since the probe holding part 162 in which the contact probe 110 or the like is set is locked at this position as described above, the contact probe 110 or the like continues to contact the corresponding land part 621 or the like.

The work computer 200 that has received the write start trigger signal 131 outputs the stored software data 210 to the software write tool 300.
Further, the software writing tool 300 that has received the software data 210 outputs the software data 210 to the software writing jig 100, and the control unit 130 of the software writing jig 100. Writes the software into the memory of the CPU 610.

  When a series of operations are completed, the fact is displayed on the display unit provided in the working computer 200 or the software writing jig 100, so that the operator completes the writing of the software into the memory of the CPU 610. Recognize

  In the above description, the software is written in the memory of the CPU 610. However, the software writing jig 100 according to the present invention newly installs software in a memory in which nothing is written. Needless to say, it can be used not only when writing, but also when updating or changing the software in the memory of the CPU 610 to which software has already been written.

In the above-described embodiment, the two contact detection probes are the first contact detection probe 120A and the second contact detection probe 120B, but the present invention is not limited to this.
For example, a third contact detection probe can be provided. The third contact detection probe is particularly effective when the land portions 621 for writing software are not arranged in a line as described above but are arranged at random.
When the land portions 621 are arranged in a row as shown in FIG. 2, the first contact detection probe 120A and the second contact detection probe 120B located on both sides of the land portion 621 are the first contact detection probe 120B. If it is in contact with the ground point 630A and the second ground point 630B, it can be reliably seen that the contact probe 110 is in contact with the corresponding land portion 621.

However, when the land portions 621 are randomly arranged, even if the first ground point 630A and the second ground point 630B are formed in the land portion 621, the first contact detection probe 120A is used. Is the first ground point 630A and the second contact detection probe 120B is in contact with the second ground point 630B, the probability that the contact probe 110 is reliably in contact with the other land portion 621 is the land portion 621. Will be lower than if they are arranged in a row.
In this case, by providing the third contact detection probe and providing the third ground point corresponding to the third contact detection probe, the probability that the contact probe 110 is accurately in contact with the land portion 621 is increased. The more contact detection probes, the higher the probability that all contact probes 110 are in exact contact with the corresponding land portions 621. However, the more contact detection probes, the more complicated the structure. Is holding. However, when the land portions 621 must be arranged at random, the technique of providing three or more contact detection probes is effective.

  The three or more contact detection probes are provided not only when the land portions 621 are randomly arranged, but also when the land portions 621 are arranged in an L shape, for example, in addition to the arrangement pattern of one row. It is considered effective.

  In the above-described embodiment, the software writing tool 300 exists as a separate body from the software writing jig 100 and the work computer 200, but the software writing jig 100 or A configuration incorporated in the work computer 200 is also possible.

DESCRIPTION OF SYMBOLS 100 Software writing jig | tool 110 Contact probe 120A 1st contact detection probe 120B 2nd contact detection probe 130 Control part 131 Writing start trigger signal 200 Work computer 210 Software data 300 Software writing tool 600 Substrate 610 CPU (electronic component)
620 Data communication terminal 630A First ground point 630B Second ground point

Claims (3)

  Software that writes software stored in a work computer to a memory of an electronic component that is mounted on a board and whose input / output terminals are connected to data communication terminals formed on the board via a software writing tool In a writing jig, a contact probe that contacts the data communication terminal, a plurality of contact detection probes that respectively contact a plurality of ground points formed on the substrate, and software writing to a memory of an electronic component A control unit that controls and detects contact and conduction to the plurality of ground points of the plurality of contact detection probes, and the control unit includes predetermined ground points at which the plurality of contact detection probes are respectively defined. If it is detected that it is in contact with the battery, the software is stored in the work Software write jig and outputs a write start trigger signal for outputting the software data in the software writing tool with respect to computer over.   In a software writing system that writes software to a memory of an electronic component that is mounted on a substrate and whose input / output terminals are connected to data communication terminals formed on the substrate, the software to be written to the memory of the electronic component is stored Working computer, software writing tool for receiving data of the software from the working computer, a plurality of contact detection probes and electronic component memories respectively contacting a plurality of ground points formed on the substrate And a software writing jig having a control unit for controlling the writing of software to the ground point and detecting contact and conduction with respect to the corresponding ground point of each of the plurality of contact detection probes. The control unit of the writing jig includes the plurality of contact detection probes. Output a start trigger signal to the work computer, and the work computer receives the start write trigger signal. For example, the software data is output to the software writing tool, and the software writing tool outputs the received software data to the software writing jig. A software writing system, wherein the jig is written in the memory of an electronic component through a contact probe.   Software that writes software stored in a work computer to a memory of an electronic component that is mounted on a board and whose input / output terminals are connected to data communication terminals formed on the board via a software writing tool In the control method of the writing jig, if the control unit detects that the plurality of contact detection probes are brought into contact with the corresponding ground points formed on the substrate and are conducted, And a writing start trigger signal for causing the software writing tool to output the software data to the software writing tool.

Images