JP2002160424A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer capable of preventing fabrication of a program card. SOLUTION: This printer comprises a CPU 1 for executing system controlling, an ASIC 2 that controls a peripheral circuit of the CPU 1 and has an ID storing section 4 for storing the serial ID, DIMM boards 7, 9 whereby various emulation programs can be additionally mounted on a controller board and each has an area to which the serial ID is written, and an operation section 11 for various key inputting. The CPU 1 controls to compare the serial ID value in the ASIC 2 with the serial ID values in the DIMM boards 7, 9 when the power is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a printer capable of adding various emulation programs.

[0002]

2. Description of the Related Art Conventionally, in a printer device, a program card in which an emulation program is mounted in a nonvolatile memory is added to a DIMM (dual in-line memory module) slot so that various emulations can be executed in addition to a main printer language. Was.

[0003]

However, in the case of this configuration, the program card can be easily duplicated by duplicating the program in the printed circuit board and the nonvolatile memory, and the expensive program card may be forged. There is.

Accordingly, an object of the present invention is to provide a printer device capable of preventing forgery of a program card.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a system control means for controlling a system, a peripheral circuit of the system control means, and a serial ID thereof are stored. A peripheral circuit control unit having an ID storage unit for performing the operation, an emulation program expansion unit having an area in which various emulation programs can be added on the controller board and a serial ID is written, and an operation unit for performing various key inputs, The means relates to a printer device which performs control for comparing the serial ID value of the peripheral circuit control means with the serial ID value in the emulation program adding means when the power is turned on.

According to a second aspect of the present invention, the system control means controls the writing of the serial ID value to the emulation program extension means by inputting the serial ID value writing mode of the operation means. Printer device.

According to a third aspect of the present invention, there is provided the case where there is no input of a serial ID value writing mode of the operating means,
Serial ID in emulation program expansion means
When the value is a predetermined value, the system control means
3. The printer according to claim 2, wherein control is performed to write the D value into the emulation program extension means.

In the present invention, a serial ID value of an ASIC (peripheral circuit control means) for controlling a peripheral circuit of a CPU (system control means), which is always present on a controller board, is written into a program card, and the serial ID value is written when the power is turned on. Comparing the values renders a forged program card unusable and prevents forgery.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a block diagram of an apparatus configuration of the present invention, and each configuration will be described. 1 is CP
U, which controls the system of the controller board. An ASIC 2 controls the CPU 1, a memory, an engine, a host interface, and the like. Further, it has an ID storage unit 4 inside. This is composed of a nonvolatile memory such as a register or an EEPROM, and the serial ID value is written before the ASIC 2 is shipped. Note that the serial ID value is the serial number of the ASIC 2, and the same number does not exist.

Reference numeral 3 denotes an SDRAM, which is used for storing expanded image data, storing an execution program, storing various set values, and the like. Reference numeral 5 denotes a flash ROM on which an OS is mounted, which stores a program mounted on a controller board for controlling the entire system. 6 and 8 are DI
It is an MM connector, and DIMM boards (non-volatile memory) 7, 9 on which an emulation program is mounted can be added.

Reference numeral 10 denotes an operation unit I / F, which makes an electrical connection with the operation unit 11. The user can set the device with the operation unit 11. 12 is IC card I /
F, download flash ROM 5,
It is possible to download emulation programs for the DIMM boards 7 and 9.

Next, FIG. 2 shows a flowchart of the present invention, and its operation will be described. First, when the power of the apparatus is turned on, it is checked whether a specific key of the operation unit 11 is pressed (S1). If the specific key is pressed, the serial ID is stored in the DIMM boards 7 and 9 storing the emulation program. The process proceeds to the flow of writing the serial ID in the ASIC 2 mounted on the controller board to the address (S2), and if it is not pressed, it starts up normally.

When the apparatus normally starts up, maker information and type information of the DIMM boards 7 and 9 storing the emulation program are obtained (S3), and it is confirmed that the emulation program exists (S3).
4). If it does not exist, it shifts to the standby state (S
5) If it exists, access the address storing the serial ID of the emulation program storing DIMMs 7 and 9 to read the serial ID value (S6).

If the read data is FFFFFFFFh (Y in S7), it is determined that the emulation card has not been attached to the device and has not been used yet, and the flow proceeds to a serial ID value writing flow (S2).
If it is not FFFFFFFFh (N in S7), the serial ID value is checked (S8), and the serial ID value is A
It is determined whether the value matches the serial ID value in SIC2.

If they match (Y in S9), it is determined that the device can be used, and the use of the emulation program is permitted (S10). If they do not match (N in S9), it is determined that the emulation program cannot be used, an error is displayed on the operation unit 11, and the use of the emulation program is prohibited (S11).

[0016]

According to the first aspect of the present invention, the system control means performs control for comparing the serial ID value of the peripheral circuit control means with the serial ID value in the emulation program expansion means when the power is turned on. Further, it is possible to provide a printer device capable of preventing forgery of a program card.

According to the second aspect of the present invention, the system control means controls the writing of the serial ID value to the emulation program adding means by inputting the serial ID value writing mode of the operating means. ID value can be rewritten,
Diversion to other devices becomes easy.

According to the third aspect of the present invention, when there is no input of the serial ID value writing mode of the operating means, and when the serial ID value in the emulation program adding means is a predetermined value, the system control means: Since the control for writing the serial ID value to the emulation program extension means is performed, the serial ID value can be easily written without relying on key input.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a printer device according to the present invention.

FIG. 2 is a flowchart illustrating the operation of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 ASIC 4 ID storage part 7, 9 DIMM board 11 Operation part

Claims (3)

[Claims] 1. A system control means for performing system control, a peripheral circuit control means for controlling peripheral circuits of the system control means and having an ID storage unit for storing a serial ID thereof, and various emulation programs on a controller board. An emulation program expansion unit having an area in which a serial ID can be added and an operation unit for performing various key inputs is provided. The system control unit includes a serial ID value of a peripheral circuit control unit when the power is turned on, and an emulation program expansion unit. A printer device for performing control for comparing serial ID values in the means. 2. The printer device according to claim 1, wherein the system control means controls writing of the serial ID value to the emulation program adding means by inputting the serial ID value writing mode of the operation means. 3. When there is no input of a serial ID value writing mode of the operation means and the serial ID value in the emulation program addition means is a predetermined value, the system control means changes the serial ID value to the emulation program addition means. 3. The printer device according to claim 2, wherein control is performed to write data into the printer.