Microcomputer control system in which programs can be modified and newer versions of the modified programs being detected and executed
First Claim
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1. A microcomputer control system, comprising:
- a memory unit for storing an incorporated program which controls the microcomputer control system when executed,wherein the incorporated program can be modified based on a program provided from outside of the microcomputer control system; and
a control unit for executing each task of the incorporated program as an execution element,wherein each task of the incorporated program and each corresponding task of the program provided from outside the microcomputer control system are compared, andwherein each task of the incorporated program is replaced with the corresponding task of the program provided from outside the microcomputer control system, if the task of the program provided from outside the microcomputer control system is newer.
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Abstract
Programs or data in a mask ROM incorporated in a one-chip microcomputer can be modified from the outside. With version information appended to each of a mask ROM 2 incorporated in a one-chip microcomputer 6 and an external EPROM 5, by comparing the version numbers, programs (tasks and subroutines) of a new version can always be executed and update data of a new version can be used. The programs can be customized for each user.
19 Citations
7 Claims
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1. A microcomputer control system, comprising:
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a memory unit for storing an incorporated program which controls the microcomputer control system when executed, wherein the incorporated program can be modified based on a program provided from outside of the microcomputer control system; and a control unit for executing each task of the incorporated program as an execution element, wherein each task of the incorporated program and each corresponding task of the program provided from outside the microcomputer control system are compared, and wherein each task of the incorporated program is replaced with the corresponding task of the program provided from outside the microcomputer control system, if the task of the program provided from outside the microcomputer control system is newer. - View Dependent Claims (3, 4, 5, 6, 7)
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2. A microcomputer control system, comprising:
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a memory unit for storing an incorporated program which controls the microcomputer control system when executed, wherein the incorporated program can be modified based on a program provided from outside the microcomputer control system; and a control unit for executing each subroutine of the incorporated program as an execution element, wherein each subroutine of the incorporated program and each corresponding subroutine of the program provided from outside the microcomputer control system are compared, and wherein each subroutine of the incorporated program is replaced with the corresponding subroutine of the program provided from outside the microcomputer control system, if the subroutine of the program provided from outside the incorporated control system is newer.
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Specification