×

System and method for sharing a non-volatile memory element as a boot device

  • US 5,848,367 A
  • Filed: 09/13/1996
  • Issued: 12/08/1998
  • Est. Priority Date: 09/13/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A digital entertainment system implemented within a vehicle having at least one peripheral device associated with individual passenger seats within the vehicle, the digital entertainment system comprising:

  • a headend control system to transmit information in a first digital format;

    a bridge circuit coupled to said headend control system, said bridge circuit to receive the information in the first digital format, to convert the information into a second digital format, and to output the information in the second digital format; and

    a plurality of seat electronics units coupled to the bridge circuit, each of said plurality of seat electronics units includinga memory bus,a non-volatile memory element coupled to the memory bus, said non-volatile memory element contains operational code used during a boot sequence,a plurality of computing systems uniquely controlling operations of at least one peripheral device associated with a passenger seat, each computer system including a processor and a local memory element, to perform the boot sequence in response to a boot condition, anda memory access coordination circuit coupled to the memory bus and to each of the plurality of computing systems, said memory access coordination circuit to control arbitration of the memory bus and to control a direct memory access transfer of the operational code from the non-volatile memory element to the local memory element associated with the selected processor.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×