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Home Ring Tones Battery-saving-method-for-portable-communications-receivers

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 Battery saving method for portable communications receivers

Details
Inventors: Macnak, Philip P.; Williard, David F.;
Assignee: Motorola, Inc. (Schaumburg, IL)
Primary Examiner: Yusko; Donald J.
Assistant Examiner:
Attorney, Agent or Firm: Downey; Joseph T., Sarli, Jr.; Anthony J., Southard; Donald B.

A system transmitting synchronization signals and coded message signals is described. In particular, coded synchronization signals are used to indicate the transmission of coded message signals or the absence of transmission of coded message signals following the transmission of the coded synchronization signal, thereby providing a battery saving function for a personal communications receiver.

DETAILED DESCRIPTION It is therefore an object of the present invention to provide a portable communications receiver with an improved battery saving function.
It is a further object of the present invention to provide a portable communications receiver with an improved battery saving function that can adjust for loading on the system.
It is a further object of the present invention to provide a portable communications receiver with an improved battery saving function that also can provide security in the transmission of information.
A system for transmitting synchronization signals and coded message signals is described which uses coded synchronization signals.
The coded synchronization signals indicate the transmission of coded message signals and the absence of transmission of coded message signals following the transmission of the coded synchronization signal, thereby providing an improved battery saving function.
Two coded synchronization signals are provided which are coded binary words.
The coded synchronization signals are complements of each other.
These and other objects and advantages of the present invention will become apparent to those skilled in the art upon consideration of the following description and accompanying drawings of the present invention.



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