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System and method for updating a memory in an electronic device via wireless data transfer

  • US 5,974,312 A
  • Filed: 07/10/1997
  • Issued: 10/26/1999
  • Est. Priority Date: 07/10/1997
  • Status: Expired due to Term
First Claim
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1. A system for updating data stored in a nonvolatile memory of an electronic device, comprising:

  • (a) a programming unit comprising a first microprocessor, a first wireless communication interface and a memory coupled to said first microprocessor, said memory containing update data;

    (b) an electronic device comprising;

    (i) a second microprocessor operable in a plurality of modes, said plurality of modes including a memory update mode,(ii) a nonvolatile memory coupled to said second microprocessor, and(iii) a second wireless communication interface coupled to said second microprocessor for receiving update data from said programming unit, wherein update data received by said second wireless communication interface is stored in said nonvolatile memory by said second microprocessor responsive to receipt of said update data while said second microprocessor is in said memory update mode; and

    (c) a wireless communication path between said programming unit and said electronic device;

    wherein said wireless communication path comprises a unidirectional communication channel for communicating data from said programming unit to said electronic device and a bidirectional communication channel for communicating data between said programming unit and said electronic device; and

    wherein said unidirectional communication channel communicates notification data and update data to said electronic device, said notification data being repeated in a plurality of notification frames and said update data being repeated in a plurality of update data frames.

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