Process control device and process control method using a medium with rewritable marking technique
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsKoji Eguchi, Hiroshi Mochizuki, Tamio Matsumura
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Abstract
A process control method allowing an operator to readily confirm an order of operation processes includes steps of: reading magnetic data of a control card when the control card is inserted; transmitting completion data based on a lot number identified from read magnetic data to a host computer; receiving update data by the host computer; writing next process data in the received data as a visually recognizable image on the control card; and writing the next process data as a visually recognizable image based on process data identified by the read magnetic data when a predetermined time period passes without receiving update data.
Claims20
A process control device for controlling a process of producing a product with a medium attached to said product, the medium allowing a recording of data in a first recording manner and a recording of a visually recognizable image for an operator in a second recording manner, comprising:
- a read circuit reading data recorded in said first recording manner on said medium;
- a transmit circuit, connected to said read circuit, transmitting said data to a computer connected to said process control device;
- a receive circuit receiving, from said computer, process data of said product in said process based on said data;
- and
- an image recording circuit, connected to said receive circuit, recording an image including a character on said medium in said second recording manner, based on said process data.
A process control device for controlling a process of producing a product with a medium attached to said product, the medium allowing a recording of data in a first recording manner and a recording of a visually recognizable image for an operator in a second recording manner, comprising:
- means for reading data recorded in said first recording manner on said medium;
- means, connected to said reading means, for transmitting said data to a computer connected to said process control device;
- means for receiving process data of said product in said process based on said data from said computer;
- and
- means, connected to said receiving means, for recording an image including a character on said medium based on said process data in said second recording manner.
A process control method to control a process of producing a product with a medium attached to said product, the medium allowing a recording of data in a first recording manner and a recording of a visually recognizable image for an operator in a second recording manner, comprising steps of:
- reading data recorded in said first recording manner on said medium;
- transmitting said data to a computer controlling said process;
- receiving process data of said product in said process based on said data from said computer;
- and
- recording an image including a character on said medium in said second recording manner based on said process data.
Dependencies are inferred from the claim text.