System and method for pendant bud for serially chaining...

Details System and method for pendant bud for serially chaining... System and method for pendant bud for serially chaining...

2005-10-18

2005-10-18

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

C710S008000, C710S009000, C710S014000, C710S015000, C710S016000, C710S017000, C710S018000, C710S019000, C710S031000, C710S072000, C713S001000, C713S100000, C713S600000

Reexamination Certificate

active

06957284

ABSTRACT:
A communications system is arranged for serially chaining multiple portable pendant peripherals to a portable host device. The system enables multiple low power input/output peripherals to communicate over a bi-directional data line with a portable host device such as a PDA or cellular phone. Fixed-length data packets are employed in a store-and-forward approach between the host device and the pendant peripherals. An upstream pendant system component controls a unidirectional clock signal that regulates data transfers to or from the host device and a downstream pendant peripheral. A device identification field associated with the data packet is incremented or decremented as the data packet is forwarded along the pendant bus chain until it reaches its destination.

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Cypress Semiconductor Corp. “USB On-The-Go Protocol” Feb. 26, 2002, pp. 1-79.

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