Resumes
Resumes
Craig Teeple Phones & Addresses
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Tucson, AZ
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Amherst, NH
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4800 N Paseo Del Tupo, Tucson, AZ 85750 (520) 360-0439
Work
Position:
Private Household Service Occupations
Education
Degree:
Associate degree or higher
Emails
Publications
Wikipedia
Sunshine Hockey League
View pageJoe Musa, JAX (55) Joe Musa, JAX (100) Mats Larson, JAX (230) 1994-95: Joe Musa, JAX (40) Craig Teeple, DB (61) Roman Hubalek, WePB (95) Mats Larson, JAX (335)
Us Patents
Methods And Apparatus For An Adsl Transceiver
View pageUS Patent:
7170927, Jan 30, 2007
Filed:
Aug 16, 2002
Appl. No.:
10/222499
Inventors:
Zhonghua Wu - Tucson AZ, US
Craig R Teeple - Tucson AZ, US
Craig R Teeple - Tucson AZ, US
Assignee:
Texas Instruments Incorporated - Dallas TX
International Classification:
H04M 9/08
US Classification:
375222, 375260, 37940601
Abstract:
An ADSL transceiver hybrid circuit uses one or more isolated couplers (optical couplers, capacitors, or the like) configured to minimize the transmit signal component in the receive signal path by providing an isolated transmit signal feedback, thereby providing echo cancellation, isolating the telephone loop from the analog front end, and eliminating the need for a complex high-pass filter. The ADSL transceiver provides isolation and echo cancellation by: (a) generating a signal within the analog loop (e. g. , telephone loop, or “local loop”) corresponding to a differential transmit signal; (b) receiving a composite signal from the analog loop corresponding to the sum of the transmit signal generated on the analog loop and the receive signal; (c) producing an isolated transmit signal (e. g. , through the use of an opto-coupler, capacitor, transformer, or the like); (d) inverting the isolated transmit signal to produce an inverted isolated transmit signal; and (e) producing the differential receive signal based on the sum of the inverted isolated transmit signal and the composite signal.