JPS6227758A - Count integrating device - Google Patents

Abstract

PURPOSE:To facilitate finding of troubles due to an electrically rewritable ROM by indicating memory replacement when the electrically rewritable ROM where data of a total counter number is stored exceeds the number of times of rewritability. CONSTITUTION:This device consists of an electrically rewritable ROM1 where data of the total counter number is stored, a controller 2 which controls a high-voltage transformer, etc. and exchanges signals with an I/O port, an interface, etc. and controls the electrically rewritable ROM1, and a display device which indicates memory replacement when the electrically rewritable ROM1 exceeds the number of times of rewritability. The electrically rewritable ROM1 consists of a RAM cell 1a and a nonvolatile cell 1b having the same memory capacity, and stored contents of the RAM cell 1a are transferred to the nonvolatile cell 1b when a pulse STORE outputted from a CPU2 is inputted, and stored contents of the nonvolatile cell 1b are transferred to the RAM cell 1a when a pulse RECALL is inputted.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a copying machine equipped with a memory circuit for storing data of a total counter number whose memory content must be maintained even when the power is not turned on. This invention relates to a counting and integrating device.

[Technical Background of the Invention] In recent years, copying apparatuses have been developed that are equipped with a memory circuit that stores a cumulative value of the number of close-up shots that have been performed as a signal.

This memory circuit is called a total counter, and holds the accumulated value using, for example, an electrically rewritable ROM when the power is on and when the power is off.

The count written in this memory circuit is used for determining the timing of maintenance, calculating copy costs, etc.

In such conventional counting and accumulating devices for copying machines, those that use an electrically rewritable ROM as a storage circuit for storing data on the total counter number have a memory capacity that stores the data on the total counter number. is an electrically rewritable ROM consisting of the same RAM cell and nonvolatile cell, and inputs detection signals from switches, sensors, etc. to control high voltage transformers, motors, etc., and connects the I10 port, interface, etc. to the bus. It is equipped with a control device (CPU) that exchanges signals through the ROM and controls an electrically rewritable ROM.

In this apparatus, when the power is turned on, the CPU enters a preparation state, and thereafter enters an operating state and becomes ready for copying. When the copy is made, the CPU outputs an l pulse, and this m pulse is input to the electrically rewritable ROM RAM cell and non-volatile cell, and the total value up to the visual field stored in the non-volatile cell is Counter number data is RA
It is input into the M cell.

Roughly for each copy, the data of the total counter number up to the present stored in the RAM cell is input to this CPU,
The total counter number of data is counted up for each copy, and the data in the RAM cell is rewritten each time.

On the other hand, the data of the total counter number stored in the non-volatile cell is manually input to CPJJ, and when the data of the total counter number of the RAM cell and the data of the total counter number of the non-volatile cell are compared in CPtJ, the CPU
From r = RA of ROM where pulses can be electrically rewritten
Data input to the M cell and the nonvolatile cell and stored in the RAM cell is input to the nonvolatile cell, and the data is rewritten.

That is, the data of the total counter number counted up for each copy is input to the nonvolatile cell, and the data stored in the nonvolatile cell is rewritten to the data of the total counter number counted up.

[Problems with the Background Art] However, the lifetime of the number of rewrites of the electrically rewritable nonvolatile ROM cells of the ROM described above is very short, so failures of copying machines often occur due to the nonvolatile cells. Since it is extremely difficult to discover that the cause of this copying machine failure is that the non-volatile cell has reached the end of its rewriting lifespan, it requires a great deal of effort to repair the copying machine failure. was.

[Object of the Invention] The present invention has been made in response to the above-mentioned circumstances, and it is possible to easily discover failures caused by exceeding the number of rewrites of the electrically rewritable ROM that stores the data of the total counter number. The purpose of the present invention is to provide a counting and integrating device that can perform

[Summary of the Invention] That is, the counting and accumulating device of the present invention includes a counting device, an electrically rewritable ROM that stores data of the total counter number of the counting device, and a ROM that is electrically rewritable when counting is performed. A counting and integrating device comprising a control device that rewrites the data of the total counter number stored in the ROM with the data of the counted up total counter number, the number of times the electrically rewritable ROM can be rewritten is determined. A display device is provided that displays a memory replacement when the total counter number is exceeded, and the control device compares the total counter number data with the rewriteable number of times and determines that the total counter number data is larger than the rewriteable number of times. By outputting a memory exchange display signal when the display device inputs the memory exchange display signal and displaying a memory exchange display when the memory exchange display signal is input, it is possible to rewrite an electrically rewritable ROM that stores data of the total counter number. This makes it easy to discover failures caused by failures that have occurred over a certain number of times.

[Embodiments of the Invention] Hereinafter, details of embodiments of the present invention will be described based on the drawings.

FIG. 1 is a block diagram for explaining one embodiment of the present invention, and FIG. 2 is an electrically rewritable ROM of this embodiment.
FIG. 3 is a flow chart for explaining the operation of this embodiment.

As shown in FIG. 1, the counting and accumulating device of the copying machine of this embodiment has an electrically rewritable ROM'l that stores data on the total counter number, and detecting signals from switches, sensors, etc. as input. A control unit (CPU) 2 which controls the high voltage transformer, motor, etc., exchanges signals with the I10 port, interface, etc. via the bus, and further controls the electrically rewritable ROM1; The ROM 1 includes a display device (not shown) that displays a memory replacement indication when the ROM 1, which can be rewritten twice, exceeds the rewriteable number of times.

In addition, as shown in FIG. 2, the electrically replaceable ROM 1 consists of a RAM cell 1a with the same memory capacity and a non-volatile cell 1b. All memory contents of Mt cell 1a are transferred to nonvolatile cell 1b, and RECA
The structure is such that all the stored contents of the nonvolatile cell 1b are transferred to the RAM cell 1a by inputting the LL pulse.

The operation of the counting and accumulating device of the copying machine of this embodiment configured as described above will be explained based on the flowchart shown in FIG.

First, in this apparatus, when the power is turned on, the CPU 2 enters a preparation state, and then enters an operating state and becomes ready for copying. And when it is copied, Figure 3-a) CPU 2 uses RECA
To output the LL pulse (Figure 3-b), this RECALL
The pulse is input to the RAM cell 1a and the nonvolatile cell 1b of the electrically rewritable ROM 1, and the data of the total counter number up to the present stored in the nonvolatile cell 1b (=life counter number data, evening) is input to the RAM cell 1a.

Roughly, the data of the number of life counters in ROM1 which can be electrically rewritten is input to the CPU2, and the data of the number of life counters and the data of the number of life counters are input to the ROMI which can be electrically rewritten by the CPU2.
When the data of the number of life counters is smaller than the number of rewrites α (Fig. 3-C), normal processing is performed (Fig. 3-d). When the data becomes larger than the rewriteable number of times α, a memory exchange signal is output from the CPU 2 and input to the display device.

The display device to which this memory exchange signal has been input displays it using, for example, a lamp mounted on the surface of the panel of the copying machine (FIG. 3-e).

Therefore, by installing the above-mentioned display device, it is easy to discover whether the failure is caused by exceeding the rewritable number of times in the electrically rewritable ROM 1 that stores the data of the total counter number of this copying machine. Ru.

On the other hand, for each copy, the data of the total counter number up to the present stored in the RAM cell 1a is input to this CPU 2, and the data of the total counter number is counted up for each copy, and the data of the RAM cell 1a is rewritten each time. It's getting worse.

At that time, the data of the total counter number stored in the nonvolatile cell 1b is input to the CPU 2, and the CPU 2 performs the RA
When the total counter number data of the M cell 1a and the total counter number data of the non-volatile cell 1b are compared and are different, the CPU 2 sends two pulses to the electrically rewritable RAM cell 1a of the POM1 and the non-volatile cell 1b. The data input and stored in the RAM cell 1a is input to the nonvolatile cell and the data is rewritten.

That is, the data of the total counter number counted up for each copy is input to the nonvolatile cell 1b, and the data stored in the nonvolatile cell 1b is rewritten with the data of the total counter number counted up.
[Effects of the Invention] As explained above, according to the counting and accumulating device of the present invention, the electrically rewritable ROM that is provided with a display device and stores the data of the total counter number can be rewritten more than the number of times that it can be rewritten. At this time, the display means displays a memory replacement display, so that a failure caused by the electrically rewritable ROM can be easily discovered.

[Brief explanation of drawings]

FIG. 1 is a block diagram for explaining one embodiment of the present invention, and FIG. 2 is an electrically rewritable ROM of this embodiment.
FIG. 3 is a flow chart for explaining the operation of this embodiment. 1... ROM1 that can be electrically rewritten
a...RAM cell 1b...Non-volatile cell 2...CPU Applicant Toshiba Corporation Patent attorney Satoshi Suyama - Figure 1 Figure 2

Claims (2)

[Claims] (1) A counting device, an electrically rewritable ROM that stores data on the total counter number of the counting device,
In the counting and accumulating device, the electrically rewritable ROM is rewritable, and includes a control device that rewrites the data of the total counter number stored in the ROM with the data of the counted up total counter number when counted. a display device is provided that displays a memory replacement display when the number of times the total counter is exceeded, and the control device compares the data of the total counter number with the number of times that can be rewritten and the data of the total counter number is greater than the number of times that can be rewritten. 1. A counting and accumulating device, characterized in that a memory replacement display signal is output when the memory replacement display signal becomes large, and the display device displays a memory replacement display when the memory replacement display signal is input. (2) The counting and integrating device according to claim 1, which is a counting and integrating device for a copying machine.