Channel selection method used in a communication system

Details Channel selection method used in a communication system Channel selection method used in a communication system

2001-10-17

2004-06-22

Yao, Kwang Bin (Department: 2667)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000

Reexamination Certificate

active

06754190

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to a channel selection method used in a communication system.
BACKGROUND OF THE INVENTION
A fast, efficient and reliable means of communicating data in a multi-user system is desirable for many applications. A need for such methods arises when multiple pieces of data (from multiple sources) need to be quickly read by a receiver. One particular application of such technology is in the electronic identification of multiple items.
The electronic identification industry is important for numerous commercial and military applications, including real-time item tracking and inventory. Such uses can greatly increase operational efficiency in a myriad of scenarios, including virtually all of those involving some form of manufacturing, warehousing, distribution and retail. The ability to quickly and efficiently perform accurate real-time inventory tracking can greatly reduce waste in many forms, including, but not limited to, the misplacement of items, over- or under-stocking of items, and item theft.
Currently, the electronic identification industry relies heavily on manual (light-based) scanning to identify a plurality of items, where each item is assigned a product code. The Universal Product Code (UPC) system is currently in widespread use throughout the United States retail industry. Manually scanning items, however, is extremely time-consuming and highly prone to human error.
Thus, there exists a need to provide a method for efficient and reliable transmission of data from multiple sources to a receiver.


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