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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Shellhammer; Stephen J.
Address:
Lake Grove, NY
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
7039358 Coexistence techniques in wireless networks May 2, 2006
Techniques are provided for frequency coordination among two different wireless network protocols, such as the IEEE 802.11 and Bluetooth protocols, operating in proximity with one another. Coordination is accomplished by the use of a first radio transceiver operating in accordance wi
7007846 Omnidirectional reading of two-dimensional symbols March 7, 2006
A method and apparatus for aligning a scan pattern to a two dimensional bar code having parallel rows of codewords. The two dimensional bar code is scanned with a scanning pattern oriented such that a plurality of lines thereof cross the bar code rows. A determination if there is a n
6992564 Cordless identification security system and method January 31, 2006
A system and method described for tracking portable devices. The system may include a transmitter which transmits wireless inquiries to a plurality of portable devices and a receiver receiving replies to the inquiries from the portable devices. In addition, the system may include a m
6853293 Wearable communication system February 8, 2005
A portable data input or computer system includes an input/output device such as a keyboard and a display, another data input device such as an optical bar code scanner, and a data processor module. To scan bar code type indicia, the operator points the scanner at the bar code and trigge
6783071 Scanner pairing in a bluetooth POS network August 31, 2004
Wireless data communications using a master/slave protocol are easily established between a master radio module which is part of a POS terminal and a slave radio module which is part of a portable bar code scanning device. A bar code identifying the portable bar code scanning device is
6764012 Signaling arrangement for and method of signaling in a wireless local area network July 20, 2004
A signaling arrangement and method for use in a wireless local area network managed by a system manager include a reader for electro-optically reading bar code symbols. The system manager verifies that a symbol has been successfully read and sends an acknowledgment signal by wireless, ra
6672511 Omnidirectional reading of two-dimensional symbols January 6, 2004
A method and apparatus for aligning a scan pattern to a two dimensional bar code having parallel rows of codewords. The two dimensional bar code is scanned with a scanning pattern oriented such that a plurality of lines thereof cross the bar code rows. A determination if there is a non-z
6672506 Statistical sampling security methodology for self-scanning checkout system January 6, 2004
A statistical basis for use in a self-scanning checkout system determines how many items to check in a shopper's shopping cart for incorrect or missing scans as well as which particular or types of items to check to determine if they were properly scanned, if the shopper is determined to
6092725 Statistical sampling security methodology for self-scanning checkout system July 25, 2000
A statistical basis for use in a self-scanning checkout system determines how many items to check in a shopper's shopping cart for incorrect or missing scans as well as which particular or types of items to check to determine if they were properly scanned, if the shopper is determined to
5635697 Method and apparatus for decoding two-dimensional bar code June 3, 1997
A method and apparatus for decoding a two-dimensional bar code symbol using a charge-coupled device (CCD) camera, charge-modulation device (CMD) camera, or other bar code reading device such as a hand-held reader, light pen or wand, scan mouse, or stationary laser scanner. The CCD/CMD ca
5523552 Method and apparatus to scan randomly oriented two-dimensional bar code symbols June 4, 1996
Disclosed are methods and apparatus for automatically aligning the field of view of a two dimensional bar code reading device with a randomly oriented two-dimensional bar code symbol wherein the symbol comprises a unique pattern located contiguously on at least one side thereof. One meth










 
 
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