Invention Application
- Patent Title: Wireless transmit-only apparatus and method
- Patent Title (中): 无线发射装置和方法
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Application No.: US10645318Application Date: 2003-08-21
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Publication No.: US20050042991A1Publication Date: 2005-02-24
- Inventor: James Fitzgibbon , Robert Keller , Bernard Wojiak
- Applicant: James Fitzgibbon , Robert Keller , Bernard Wojiak
- Assignee: The Chamberlain Group, Inc.
- Current Assignee: The Chamberlain Group, Inc.
- Main IPC: G07C9/00
- IPC: G07C9/00 ; G08C17/00 ; G08C17/02 ; H03L7/06 ; H04B1/04 ; H04B7/00 ; H04B7/24 ; H04B1/02 ; H04B1/034

Abstract:
A wireless transmit-only apparatus (20) has a controller (21) that responds to a user interface 25 by correlating specific user input with a corresponding characterizing transmission parameter(s) as is stored in a memory (35) and by selecting a corresponding resonant device (31 and 32). The latter devices serve to drive the PLL control input of a phase locked loop (23) to thereby influence the transmission carrier frequency of a wireless transmitter (22). In a preferred embodiment, at least one of the resonant devices comprises a mechanically resonant device such as a surface acoustic wave device, a crystal resonator, or a ceramic resonator.
Public/Granted literature
- US07181174B2 Wireless transmit-only apparatus and method Public/Granted day:2007-02-20
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