Portable electronic device supporting multi-protocols
First Claim
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1. A portable electronic device connectable to an external device, said portable electronic device comprising:
- first storing means for storing software programs respectively using different communication protocols;
second storing means for storing prescribed information, said prescribed information serving to discriminate a specific protocol which is to be used when communication is started with said external device;
third storing means, coupled with said first and second storing means, for storing said specific protocol when communication is started;
communication means for communicating with said external device based on one of said software programs stored in said first storing means, said software program corresponding to said specific protocol stored in said third storing means; and
a controller unit, coupled to said first and said second storing means as well as said communication means and which incorporates said third storing means, for temporarily changing said specific protocol used by said portable electronic device during communication in response to a protocol type selection command input from said external device, where said specific protocol is changed by modifying the stored contents of said third storing means, and for changing said specific protocol used by said portable electronic device at the time of start of communication in response to an initial data updating command, where said specific protocol for use at the time of start of communication is changed by modifying the stored contents of said second storing means.
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Abstract
A portable electronic device includes a storing unit for storing different types of communication protocols, a priority order setting unit for setting a priority order for the different types of communication protocols stored in the storing unit, a selecting unit for selecting a predetermined communication protocol from the different types of communication protocols on the basis of the priority order set by the priority order setting unit, and a communicating unit for performing communication using the predetermined communication protocol selected by the selecting unit.
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Citations
17 Claims
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1. A portable electronic device connectable to an external device, said portable electronic device comprising:
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first storing means for storing software programs respectively using different communication protocols; second storing means for storing prescribed information, said prescribed information serving to discriminate a specific protocol which is to be used when communication is started with said external device; third storing means, coupled with said first and second storing means, for storing said specific protocol when communication is started; communication means for communicating with said external device based on one of said software programs stored in said first storing means, said software program corresponding to said specific protocol stored in said third storing means; and a controller unit, coupled to said first and said second storing means as well as said communication means and which incorporates said third storing means, for temporarily changing said specific protocol used by said portable electronic device during communication in response to a protocol type selection command input from said external device, where said specific protocol is changed by modifying the stored contents of said third storing means, and for changing said specific protocol used by said portable electronic device at the time of start of communication in response to an initial data updating command, where said specific protocol for use at the time of start of communication is changed by modifying the stored contents of said second storing means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system formed of portable electronic devices each optionally connected to an external device, each portable electronic device comprising:
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first storing means for storing software programs respectively using different communication protocols; second storing means for storing prescribed information serving to discriminate a specific protocol which is to be used by the portable electronic device at the time of start of a communication with the external device; third storing means, coupled with said first and second storing means, for storing said specific protocol when communication is started; communication means for communicating with said external device based on one of said software programs stored in said first storing means, said software program corresponding to said specific protocol stored in said third storing means; and a controller unit, coupled to said first and said second storing means as well as said communication means and which incorporates said third storing means, for temporarily changing said specific protocol used by said portable electronic device during communication in response to a protocol type selection command input from said external device, where said specific protocol is changed by modifying the stored contents of said third storing means, and for changing said specific protocol used by said portable electronic device at the time of start of communication in response to an initial data updating command, where said specific protocol for use at the time of start of communication is changed modifying the stored contents of said second storing means.
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8. A portable electronic device to be used with an external device, comprising:
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storing means for storing a plurality of communication protocols to be used for a communication between said portable electronic device and said external device, each protocol having a priority associated therewith; determining means, coupled with said storing means, for determining whether the portable electronic device supports at least two of the stored protocols, and providing a determining result based on that determination for indicating which protocol will be used for said communication, thereby allowing a lower priority protocol to be used before a higher priority protocol; selecting means, coupled with said determination means, for selecting a protocol based on said determining result; and means, coupled with said selecting means, for communicating with said external device using said selected protocol. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A portable electronic device comprising:
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storing means for storing a plurality of communication protocols; means for prioritizing said protocols including a first and subsequent priority corresponding to said stored protocols, said first and subsequent priorities being changeable; means for selecting a protocol from said stored protocols based on said priorities associated therewith; and means for performing communication using said selected protocol.
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Specification