JPS6041180A - Setting device of the number of sheets - Google Patents

Abstract

PURPOSE:To obtain an easily operatable and highly reliable analog type sheet number setting device by setting up the number of copied sheets of a copying machine or the like by a variable resistor and converting the change of resistance into a digital value to determine the value. CONSTITUTION:When a dial of a sheet number setting variable resistor 7 is turned to set up the number of sheets, the voltage of a terminal A1 of a CPU8 provided with an A/D input is set up to a certain value, the CPU8 A/D-converts the voltage value into digital data and stores the digital data in an internal memory M1. The stored data are converted into display data, the display data are stored in a memory M2 and compared with the preceding data in a counter CT1. In case of coincidence, the display data are returned to the A/D converter, and in case of inconsistency, the data in the M2 are stored in the counter CT1 and displayed on a segment display device 9. Data indicating the real number of times of recording and stored in a counter CT2 are converted into the data in the counter CT1 and then returned to the A/D converter.

Description

Detailed Description of the Invention (Technical Field) The present invention is a copy number setting device, particularly a copy machine, etc., where the number of copies is set by converting the resistance change of a variable resistor provided in one setting section into a digital value. This invention relates to an analog type sheet number setting device.

(Background Art) Conventionally, this type of device requires input from multiple key groups such as 10 keys and up/down keys, and these key groups are configured in a matrix or can be read directly.
The hardware configuration for this has become complicated, and the cost has increased accordingly. In addition, when copying processing is performed using a central processing unit (CPU), etc., the number of I10 boats is limited, so if the I10 boats for the number setting device are included, the number of I10 boats is limited to a predetermined number. When this number is exceeded, an additional I10 board for expansion is required, which also has the disadvantage of increasing costs.

(Purpose) Therefore, an object of the present invention is to eliminate the above-mentioned conventional drawbacks, improve operability and improve reliability, and provide a sheet number setting device that is extremely inexpensive and has a simple configuration. shall be.

(Example) The present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a schematic configuration of an embodiment of the present invention. In the figure, / to 6 are fixed resistors, 7 is a variable resistor for setting the number of sheets that can be changed by operating the dial or lever of the I/λ operation section (not shown), and g is a microphone 4 computer with A/D input (hereinafter referred to as In g, VA8S is the analog GND N VRFJF + standard input, A/
indicates the manual setting of the number of sheets, and OO to 076 indicates the output of the number of sheets setting data.

Next, in the above configuration, the CPU g performs control according to the procedure shown in FIG. According to FIG. 2, the control operation by the CPUg after the power is turned on will be explained.

Step Sl: After turning on the power, to the first to nose counter CT/
Set 7 as the initial value and use this as the segment indicator? Displayed by

Step 8.2: Select the analog input boat.

Step S32 Starts the operation of converting the analog value of the selected analog human-powered boat into a digital signal. Step sy: Processing time for performing g-bit A/D conversion, which is approximately ? A time of about 6 μsec is required.

Step S6: Finish A/D conversion. A/D conversion is completed only after this step SS.

Step Sb: The h/D converted data sent to the first memory M/ is converted into display data and stored in the second memory M,2.

Step S: Compare the data in the first counter CT/ with the data in the above-mentioned memory M2, and if the data is the same, jump to step 8.2, otherwise proceed to the next step sg. .

STEP Sg: Data in the λ-th memory M is input to the first counter CT.

Step s9: The updated data in the counter CT/ of i/ is displayed on the segment display t.

Step S10: Copy count indicating the actual number of stored recordings in the second counter CT2 (if the copy count method is a subtraction type, convert the data to the data in the first counter CT/ and add it) If it is a type, set it to O, then jump to step S2.

In addition, various means such as a dial, a wheel, a lever, etc. can be used as means for changing the variable resistor 7 on the upper side.

(Effects) As explained above, according to the present invention, the numerical value is set only from the change in the variable resistor, so the hardware configuration is extremely simple, and the operating procedure is also simplified. Therefore, operability is improved, and numerical values can be set more easily than before.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration 3 of the sheet number setting device of the present invention, and FIG. 2 is a flowchart showing its control procedure. /~6... fixed resistor, 7... variable resistor, g... microcomputer (CPU), 9...
Segment display, CT/, CTco...counter, M/, Mtsu...memory. Figure 1 Procedural amendment (method) Mr. Kazuo Wakasugi, Director General of the Japan Patent Office, July 1, 1953, Patent Application No. 1982-149230 2, Invention title number setting device 3, Make amendments Relationship with the Patent Case (100) Canon Co., Ltd. 1, "No. ko wa" on page 7, line 73 of the specification is corrected to "Fig. 1 wa."

Claims (1)

[Claims] l) Setting means for setting the number of recording sheets, means for changing a resistance value by the setting means, and A/D conversion means for converting an analog input obtained from the changed resistance value into a digital value. and a first counter that converts the digital value into a predetermined numerical value and stores it. 2) The sheet number setting device according to claim 1, wherein the content of the first counter is set to 1 when the resistance change is not obtained by the setting means after power is turned on. 3) A first counter that stores the number of sheets set by the setting section and changes and stores the number of sheets each time the recording process is performed, and the contents of the first counter are stored as described above after the recording process is completed. 2. The number-of-sheets setting device according to claim 1, wherein the change is made when a resistance change is obtained from the setting means, and the memory is maintained without being changed when the change remains. (Hereafter, margin)