JPH1153253A - Memory module substrate and equipment mounted with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inform an operator of wrong mounting in such a case by providing an output part which outputs a mount signal indicating which of 1st and 2nd substrate mount parts a 1st memory module substrate is mounted on according to the settings of an information setting part. SOLUTION: The memory module substrate having information A written is inserted into a socket having a specific circuit. When a current is supplied from a power source 15 after the mounting is completed, an H-level detection signal 11 and an L-level detection signal 12 are outputted from a buffer 13. Two L-level signals are inputted to a logic element 16. When a memory module substrate having information B written is inserted into the socket, the logic circuit 16 outputs two H-level signals. Therefore, a reset circuit 17 operates to make a connection with an error display circuit, thereby informing the user that the memory module substrate is mismounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a memory module substrate having a memory and a device mounted with the memory module substrate.

[0002]

2. Description of the Related Art FIG. 11 is a view showing a memory module substrate of a conventional printer, and FIG. 12 is a schematic view showing a control board of the conventional printer. In the figure, 1
01A is a memory module substrate, 102 is a program writable memory such as an EPROM, and 103 is a terminal. A plurality of memories 102 on which information A is written are mounted on a memory module substrate 101A. Is connected to the terminal 3. 104 is a printer device, 1
Reference numeral 05 denotes a control board on which the sockets 106A and 106B, the CPU 107, and the like are mounted.

The two memory module substrates 10
When mounting the memory modules 1A and 101B on the sockets 106A and 106B, the memory module board 101A is mounted on the socket 106A and the memory module board 101B is mounted on the socket 106B. Information B is written in the memory 102 of the memory module substrate 101B (not shown). In the printer device 104, the CPU 107
Socket 106 mounted on control board 105
A, memory module board 101 mounted on 106B
The control is performed by referring to the information A and the information B written in the memories A and 101B.

[0004]

A conventional printer 1
Reference numeral 04 denotes a memory module substrate 101A on which the memory 102 on which the information A is written is mounted and a memory module substrate B on which the information B is written
6B. If the memory module boards 101A, 101B are mounted in the wrong sockets 6B, 6A, the CPU 107 cannot accurately refer to the information A and the information B, and the printer 104 cannot operate normally. there were.

[0005] The present invention has been made to solve such a problem, and an object of the present invention is to provide a memory module board that can recognize that predetermined information is stored in a memory of the memory module board. It is another object of the present invention to provide a device equipped with a memory module board capable of recognizing whether a memory module board having a memory in which predetermined information is stored is mounted on a corresponding board mounting section. Still another object of the present invention is to provide a device equipped with a memory module board that can operate normally even when a memory module board having a memory in which predetermined information is stored is mounted on any board mounting section.

[0006]

An apparatus mounted with a memory module board according to the present invention has a first memory module having an information setting section which is set according to first information stored in a first memory. A substrate, a second memory module substrate having a second memory in which second information is stored, first and second substrate mounting portions on which the first and second memory module substrates are mounted, A control unit that is controlled based on the first and second information stored in the first and second memories; and a first memory module board that is configured to control the first memory module substrate according to the setting of the information setting unit. And an output section for outputting a mounting signal indicating which mounting section of the second board mounting section is mounted.

[0007] A first memory module substrate having an information setting section set according to the first information stored in the first memory, and a first memory module substrate having an information setting section set according to the second information stored in the second memory. A second memory module board having an information setting section set by the user, first and second board mounting sections on which the first and second memory module boards are mounted, and the first and second memories And a control unit that is controlled based on the first and second information stored in the first and second memory module boards according to the setting of the information setting unit. A detection unit for detecting which of the mounting units is mounted.

In addition, when the second memory module substrate is mounted on the first substrate mounting portion based on a signal from the detecting portion, a display circuit is provided for displaying erroneous mounting. Further, a signal is provided between the control unit and the first and second substrate mounting units, and a signal indicating that the second and first memory module substrates are mounted on the first and second substrate mounting units is provided by the detection unit. And a switching unit for switching a logical connection state between the control unit and the first and second substrate mounting units when the signal is output from the control unit. Furthermore, a memory module substrate according to the present invention includes a memory in which predetermined information is stored, an information setting unit set in accordance with information stored in the memory, and a signal line connected to the memory and the information setting unit. And a substrate having the memory, the information setting unit, and the terminal.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a memory module substrate according to Embodiment 1 of the present invention, and FIG. 2 is a circuit diagram of an erroneous mounting detection circuit on the memory module substrate side of FIG. In the figure, 10A is a memory module substrate, 10a is a substrate formed of resin, 2 is EPROM, EEPROM which stores predetermined information,
An OM, a program writable memory such as a flash memory, 3 is formed of, for example, copper, and terminals to which a signal line (not shown) of the memory 2 and the fuses 8 and 9 are connected.
Reference numeral 9 denotes a fuse (information setting unit) that is cut in accordance with the information stored in the memory 2. For example, the fuse 9 is commonly connected to a predetermined terminal 3 a of the terminals 3, the fuse 8 is connected to the terminal 3 b, and the fuse 9 is connected to the terminal 3 c. (FIG. 2).

FIG. 3 is a schematic diagram showing a control board of the printer device according to the first embodiment of the present invention, and FIG. 4 is a circuit diagram of an erroneous mounting detection circuit on the controller side of the printer device according to the first embodiment of the present invention. Module substrate 10A having memory 2 in which information A is stored
FIG. 4 is a circuit diagram when mounted on A. FIG. 5 is a table illustrating detection signals of the circuit of FIG. In the figure, 5 is a control board, 6A and 6B are memory module boards 10
A, a socket (substrate mounting portion) to which 10B (not shown) is mounted; and 7, a CPU provided on a control substrate
(Control unit). In the circuit on the control board 5 side, for example, the power supply terminal 15 for applying +5 V to the terminal 3a of the memory module board 10A and the terminals 3b and 3c are connected to GND via the resistors 14 and 14, and the detection signals 11 and 12 are extracted. And output buffers 13 and 13 (output unit).

In the memory module substrate 10A in which the information A is written (having the memory 2 in which the information A is stored), at the time of writing, the fuse 8 is blown by a writing device to be described later according to the writing content. In the memory module substrate 10B to which the information B is written, the fuse 9 is cut at the time of writing. Here, a case where the memory module substrate 10A on which the information A is written is mounted on the socket 6A will be described. By providing a circuit such as the memory module substrate side of FIG. 4 on the memory module substrate 10A and providing a circuit such as the control substrate side of FIG.
When A is mounted (positive), H (Hig) is connected via the terminal 3b.
h: + 5V) level, and when the memory module board 10B is mounted (reverse), an L (Low: 0V) level detection signal 11 is generated via the terminal 3c (FIG. 5).

As shown in FIG. 5, based on the combination in which the fuses 8 and 9 are cut, that is, the detection signals 11 and 12 are detected.
(1) Memory module board 10A on which information A is written, (2) Memory module board 10B on which information B is written, (3) Not mounted on socket 6A,
(4) Four states of mounting of the unwritten memory module substrate can be determined. Therefore, by detecting the levels of the two detection signals 11 and 12,
After the mounting of the memory module substrate, it is possible to determine which memory module substrate is mounted in the socket 6A, and it is possible to normally operate the printer device 4 and to provide a highly reliable device. Further, since it is possible to determine the status of (3) unmounted and (4) unwritten, the printer device 4 can be operated more normally.

In the above description, the memory module substrate 1
The case where the erroneous mounting detection circuit having the fuses 8 and 9 is provided at 0A and the erroneous mounting detection circuit having the buffer 13 and the resistor 14 is provided at the socket 6A and the control board 5 has been described.
It is preferable that a similar erroneous mounting detection circuit is provided for B, the socket 6B, and the control board 7. This is because the state of mounting the memory module boards 10A and 10B to the sockets 6A and 6B of the control board 5 can be accurately determined. Also, when there are three or more sockets and memory module boards, This is because it is necessary to determine the mounting state of the memory module substrate.

Embodiment 2 FIG. Hereinafter, a second embodiment of the present invention will be described. FIG. 6 is a reset circuit diagram for performing a reset operation when a memory module substrate of the printer device according to the second embodiment of the present invention is erroneously mounted. FIG. 7 is an erroneous mounting of the memory module substrate of the printer device according to the second embodiment of the present invention. FIG. 7 is a display circuit diagram of an erroneous mounting display at times. In the figure, 16 is a logic element (detection unit) for inputting detection signals 11 and 12 and detecting the information type of the memory module board mounted in the socket, and 17 is in accordance with an L level output signal from the logic element 16. A reset circuit 18 for resetting the printer device 4 is a display circuit for displaying that the mounting is erroneous according to an H level output signal from the logic element (AND element) 16. Note that the logic element 16 in FIG.
Is a configuration when provided on a socket on which the memory module substrate 10A on which the information A is written is mounted. The other configuration is the same as that of the first embodiment, and a description thereof will be omitted.

Next, the operation will be described. The memory module substrate 10A on which the information A is written is mounted on the socket having the circuits shown in FIGS. After the mounting is completed, when a current is supplied from the power supply 15, the H-level detection signals 11 and L
The signal of the level detection signal 12 is output from the buffer 13. The logic element 16 receives two L-level signals and does not output H-level signals. On the other hand, when the memory module substrate 10B on which the information B is written is mounted in the socket, two H-level signals are input to the logic element 16 and the logic element 16 outputs an L-level signal. 17 operates to prevent runaway of the printer device 4. Further, by connecting the error display circuit 18, the user of the printer device 4 can be notified of the incorrect mounting of the memory module substrate. Note that the reset circuit 17 and the display circuit 18 may operate in response to an H level signal instead of an L level signal.

Embodiment 3 In the first and second embodiments, the second module mounted on the memory module substrates 10A and 10B
When an erroneous mounting detection circuit is configured by cutting one of the two fuses, that is, the information setting unit
9 has been described, but the information setting unit may have another configuration. FIG. 8 is an erroneous mounting detection circuit diagram on the memory module substrate side according to Embodiment 3 of the present invention, showing an example of a memory module substrate on which information A is written.

In the figure, 8C (solid line), 9C (dashed line)
Is a chip jumper used according to information stored in the memory 2. The other configurations are the same as those of the first and second embodiments, and the description thereof is omitted. At the time of assembling the memory module substrate 10A on which the information A is written, FIG.
Is mounted, and a chip jumper 9C is mounted on the memory module module substrate 10B on which the information B is written. With the configuration as described above, in addition to the same effects as the first and second embodiments, the chip jumper 8
Since C and 9C are used, it is suitable for mass production and can be manufactured at low cost.

Embodiment 4 Hereinafter, a fourth embodiment of the present invention will be described. FIG. 9 is a circuit configuration diagram of a writer for a memory module substrate according to Embodiment 4 of the present invention. In the figure, 3d is a contact connecting the memory 2 and the information writing unit 19, 19 is an information writing unit for writing information A, B, etc. in the memory 2, and 20B and 20C are controlled by the switch control circuit 21. Switch, 21 is an information signal 19S
A switch control unit 22 that controls the switches 20B and 20C according to the write information of the memory module 22 is a memory module erroneous mounting detection circuit that detects erroneous mounting of the memory module substrate mounted on the socket. FIG. 9 shows a circuit of the memory module substrate in an unwritten state. The writer is an information writer 19, switches 20B and 20C, a switch control circuit 2
1. It is composed of a memory module erroneous mounting detection circuit 22 and the like. The fuses 8 and 9 are connected to the H level voltage (5
The one cut by application of V) is used. Other configurations are the same as those of the first to third embodiments, and thus description thereof will be omitted.

Next, the operation will be described. First, the writer applies the H-level signal to the terminal 3a by the power supply 15. Then, the memory module erroneous mounting detection circuit 22
Determines that the memory module substrate is an unwritten product when an H-level signal is input from the terminals 3b and 3c. On the other hand, when an L-level signal is input from either terminal 3b or terminal 3c, it is determined that the memory module substrate has been written, and writing is prohibited.

Next, writing of information into the memory 2 will be described. The information writing section 19 writes the information A into the unwritten memory 2. Thereafter, the switch control circuit 21 receiving the information signal 19S indicating the write information A connects the switch 20B to the ground side and cuts the fuse 8. On the other hand, when writing the information B, after writing the information B in the memory 2, the switch 20C is connected to the ground side to cut the fuse 9.

As described above, the information setting unit is connected to the fuse 8,
9, the fuse 8 or 9 may be blown when writing the information A and the information B, unlike the case where the chip jumpers 19 and 20 are used as in the third embodiment.
Superior versatility. Further, the switch control circuit 21 controls the switches 20B and 20C in accordance with the contents of the information signal 19S.
9, the disconnection state (setting state of the information setting section) always matches,
High reliability in assembling the memory module substrate.

In the above description, when the memory module erroneous mounting detection circuit 22 determines that the memory module board has data written therein, the memory module board is prohibited from being written. Therefore, the memory module board cannot be reused. . The case where the output of the terminal 3b in FIG. 9 is H level and the output of the terminal 3c is L level is determined as the memory module substrate 10A in which the information A is written, and the output of the terminal 3b is L level and the terminal 3c Is at the H level, it is determined that the memory module substrate 10B has the information B written therein. And
Information writer 19 and memory module erroneous mounting detection circuit 22
With this configuration, writing is permitted only when the information type of the newly written write data and the information type based on the blown state of the fuse of the memory module substrate match, so that the memory module substrate can be reused. It becomes possible.

Embodiment 5 Hereinafter, a fifth embodiment of the present invention will be described. FIG. 10 shows Embodiment 5 of the present invention.
FIG. 6 is a circuit diagram showing erroneous mounting switching of a memory module substrate of the printer device according to the first embodiment. In the figure, information A and information B are written in 10A and 10B, respectively, and sockets 6B and 6B are respectively written.
A is a memory module substrate that is incorrectly mounted on
The switching means provided between 7 and the sockets 6A and 6B is constituted by an address multiplexer 31 and a data multiplexer 32. A decoder 33 outputs chip select (output control of memory) signals 29 and 30. The other configuration is the same as that of the first embodiment, and a description thereof will be omitted.

Next, the operation will be described. After the memory module substrates 10A and 10B are mounted in the sockets 6B and 6A, the erroneous mounting detection circuit 22 operates in the same manner as the operation described in the above embodiment to input the detection signals 25 and 2
The H level and the L level of each of the signals 6, 27 and 28 are detected, and it is determined whether the memory module boards 10A and 10B to be mounted on the sockets 6A and 6B are mounted. The erroneous mounting detection circuit 22 includes the memory module substrates 10A,
0B is properly mounted, the L level signal 22S
, And outputs an H-level signal 22S when mounted. In the case of the fifth embodiment, an H-level signal 22S is output.

The address multiplexer 31 and the data multiplexer 32 are initially set in the sockets 6A,
The CPU 7 is set so that the CPU 7 can normally perform a control operation on the memory module substrates 10A and 10B mounted on 6B. When the H-level signal S22 is input from the erroneous mounting detection circuit 22, the address multiplexer 31 and the data multiplexer 32 change the internal logical connection from the initial state to the opposite state (socket 6).
A, 6B with the memory module boards 10B, 10A mounted). When the L-level signal S22 is input from the erroneous mounting detection circuit 22, the logical connection in the initial state is not changed.

Thereafter, an address signal 34 is output from the CPU 7, and the address multiplexer 31 operates according to its own logical connection state.
And a data signal 35 is input to the CPU 7 from the memory module substrates 10A and 10B via the data multiplexer 32. With the above-described configuration, any of the memory module substrates 10 is attached to the sockets 6A and 6B.
Regardless of whether or not A and 10B are mounted, the CPU 7 can perform a normal control operation without being aware of the mounted state.

In the above description, the printer device 4 is described as an example of the device on which the memory module boards 10A and 10B are mounted. However, devices other than the printer device 4 may be used. Also, since the data width is wide, the memory 2
In the case where two types of memories, an even number memory and an odd number memory, are used, it is possible to make a determination by using information A and information B as information for even and odd numbers.

[0028]

According to the present invention, there is provided an apparatus equipped with a memory module board according to the present invention, comprising: a first memory module board having an information setting section set according to first information stored in a first memory; A second memory module substrate having a second memory in which the information of the first and second memory modules is stored; first and second substrate mounting portions on which the first and second memory module substrates are mounted; A control unit that is controlled based on the first and second information stored in the second memory; and the first memory module board is configured to control the first and second information in accordance with the setting of the information setting unit. An output unit that outputs a mounting signal indicating to which mounting unit the substrate mounting unit is mounted, so that a memory module substrate having a memory in which predetermined information is stored is mounted on the corresponding substrate mounting unit. Can recognize whether or not

Also, a first memory module substrate having an information setting section set in accordance with the first information stored in the first memory, and a first memory module board having an information setting section in accordance with the second information stored in the second memory. A second memory module board having an information setting section set by the user, first and second board mounting sections on which the first and second memory module boards are mounted, and the first and second memories And a control unit that is controlled based on the first and second information stored in the first and second memory module boards according to the setting of the information setting unit. A detection unit that detects which of the mounting units is mounted on the mounting unit, and detects whether a memory module substrate having a memory in which predetermined information is stored is mounted on a corresponding substrate mounting unit. The control operation is highly reliable.

Further, when the second memory module board is mounted on the first board mounting section based on a signal from the detecting section, a display circuit is provided for displaying erroneous mounting. It can be notified that it is erroneous mounting.

The first and second substrate mounting portions are provided between the control portion and the first and second substrate mounting portions, and the second and first substrates are mounted on the first and second substrate mounting portions.
When a signal indicating that the memory module substrate is mounted is output from the detection unit, a switching unit that switches a logical connection state between the control unit and the first and second substrate mounting units is provided. A normal operation can be performed even if a memory module substrate having a memory in which is stored is mounted on any substrate mounting portion.

Still further, a memory module substrate according to the present invention includes a memory in which predetermined information is stored, an information setting unit set in accordance with information stored in the memory, and a signal transmitted to the memory and the information setting unit. Since it is provided with the terminal connected via the line, and the substrate having the memory, the information setting section, and the terminal, it can be recognized that the predetermined information is stored in the memory of the memory module substrate.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a memory module substrate according to Embodiment 1 of the present invention;

FIG. 2 is a circuit diagram of an erroneous mounting detection circuit on the memory module substrate side of FIG. 1;

FIG. 3 is a schematic diagram showing a control board of the printer device according to the first embodiment of the present invention.

FIG. 4 is an erroneous mounting detection circuit diagram on the controller side of the printer device according to the first embodiment of the present invention;

FIG. 5 is a table illustrating detection signals of the circuit of FIG. 4;

FIG. 6 is a reset circuit diagram that performs a reset operation when a memory module substrate of the printer device according to Embodiment 2 of the present invention is incorrectly mounted.

FIG. 7 is a display circuit diagram showing erroneous mounting when a memory module substrate of the printer device according to Embodiment 2 of the present invention is erroneously mounted.

FIG. 8 is a circuit diagram of an erroneous mounting detection circuit on the memory module substrate side according to Embodiment 3 of the present invention;

FIG. 9 is a circuit configuration diagram of a writer for a memory module substrate according to a fourth embodiment of the present invention.

FIG. 10 is a circuit diagram showing erroneous mounting switching of a memory module substrate of a printer according to a fifth embodiment of the present invention.

FIG. 11 is a diagram illustrating a memory module substrate of a conventional printer device.

FIG. 12 is a schematic diagram showing a control board of a conventional printer device.

[Explanation of symbols]

2 memory, 3, 3a, 3b, 3c, 3d terminal,
4 printer device, 5 control board,
6A, 6B socket, 7 CPU, 8 fuse, 8C Chip jumper, 9 fuse, 9C
Chip jumper, 10A, 10B memory module board, 10a board, 11 detection signal, 1
2 detection signal 13 buffer, 14 resistance, 15
Power supply, 16 logic elements, 17 reset circuit, 18 display circuit, 19 information writing section,
20B, 20C switch, 21 switch control circuit, 22 memory module incorrect mounting detection circuit,
25 detection signal, 26 detection signal, 27 detection signal, 28 detection signal, 29 chip select,
30 chip select, 31 address multiplexer, 32 data multiplexer, 33
Decoder, 34 address signal, 35 data signal

Claims (5)

[Claims] 1. A first memory module substrate having an information setting unit set according to first information stored in a first memory, and a second memory storing second information. A second memory module substrate, first and second substrate mounting portions on which the first and second memory module substrates are mounted, and first and second stored in the first and second memories. A control unit that is controlled based on the above information, and which of the first and second substrate mounting units the first memory module substrate is mounted on in accordance with the setting of the information setting unit. And an output unit for outputting a mounting signal. 2. A first memory module substrate having an information setting section set according to first information stored in a first memory, and a first memory module substrate having an information setting section set according to second information stored in a second memory. A second memory module board having an information setting section set by the user; first and second board mounting sections on which the first and second memory module boards are mounted; and the first and second memories And a control unit controlled based on the first and second information stored in the first and second memory module boards according to the setting of the information setting unit. A device mounted with a memory module board, comprising: a detection unit that detects which of the mounting units is mounted. 3. When a second memory module board is mounted on a first board mounting section based on a signal from a detection section,
3. The device equipped with the memory module substrate according to claim 2, further comprising a display circuit for displaying erroneous mounting. 4. A signal provided between the control section and the first and second board mounting sections and indicating that the second and first memory module boards have been mounted on the first and second board mounting sections. 4. The memory module board according to claim 2, further comprising: a switching unit configured to switch a logical connection state between the control unit and the first and second board mounting units when the signal is output from the detection unit. Equipment installed. 5. A memory in which predetermined information is stored, an information setting unit set according to information stored in the memory, a terminal connected to the memory and the information setting unit via a signal line, A memory module substrate comprising the memory, the information setting unit, and a substrate having terminals.