Philip Yip, Age ~647406 Napier Trl, Austin, TX 78729

Philip Yip Phones & Addresses

7406 Napier Trl, Austin, TX 78729 (512) 335-6506

Albuquerque, NM

Germantown, MD

7406 Napier Trl, Austin, TX 78729 (512) 297-8387

Work

Position: Executive, Administrative, and Managerial Occupations

Education

Degree: Associate degree or higher

Mentions for Philip Yip

Publications

Us Patents

Monitoring Line Conditions In The Data Transmission Mode

US Patent:
6374375, Apr 16, 2002
Filed:
May 9, 1997
Appl. No.:
08/853300
Inventors:
Philip C. Yip - Austin TX
Muhammad M. Rahmatullah - Austin TX
Terry L. Cole - Austin TX
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
G01R 3128
US Classification:
714715, 375231
Abstract:
A method and apparatus for allowing a modem transmitting data in the data mode to initiate retraining mode due to changing line conditions. The modem inserts a test signal within the data received from a computer system. The data and test signal are encoded and sent over a network to a second modem. The second modem compares the test signal with a standard test signal, and if the test signal received is different from the standard test signal, the second modem initiates retraining of the modems to adjust for the varying line conditions.

Method For Training A Receiving Modem

US Patent:
2005005, Mar 17, 2005
Filed:
Sep 16, 2003
Appl. No.:
10/663628
Inventors:
Philip Yip - Austin TX,
Paul Brown - Austin TX,
Brian Mirkin - Austin TX,
International Classification:
H04B001/38
US Classification:
375222000
Abstract:
A method for training a receiving modem is disclosed. The receiving modem can be trained by a sending modem via a four-segment training procedure. During segment training, the sending modem waits for silence on a transmission line between the sending modem and the receiving modem for 48 symbol intervals. Then, the sending modem performs segment training by sending alternating AB symbols to the receiving modem for 64 symbol intervals. During segment training, the sending modem sends CD symbols to the receiving modem for 64 symbol intervals in order to train an equalizer within the receiving modem. During segment training, the sending modem continues to train the equalizer within the receiving modem by sending scrambled binary “1” symbols to the receiving modem for 48 symbol intervals. After a successful completion of the segment training, the receiving modem can change to a data mode to begin detecting and receiving data from the sending modem.

Mlse Implementation Using A General Purpose Dsp And Shared Hardware For A Gsm Application

US Patent:
6195782, Feb 27, 2001
Filed:
May 28, 1998
Appl. No.:
9/086098
Inventors:
Muhammad M. Rahmatullah - Tustin CA
Tony E. Sawan - Austin TX
Philip Yip - Austin TX
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
H03M 1303
US Classification:
714796
Abstract:
A digital signal processor (DSP), hardware module, and shared memory coupled together to perform Viterbi decoding on a sequence of received symbols. Given channel coefficients, the DSP calculates initial data for Viterbi processing: combination values for each possible state and branch product values for each possible symbol. These values are stored in shared memory for access by the hardware module. The DSP further calculates the first few stages of the Viterbi processing so path metrics are well defined for every state. Path metric values are also stored into the shared memory. The hardware module is optimized to perform calculations associated with a single stage of the Viterbi algorithm. The DSP invokes by the hardware module by passing a received sample to the hardware module. The hardware module calculates a survivor state value and minimizing path metric value for each state in the state space.

System And Method For Estimating A Set Of Parameters For A Transmission Channel In A Communication System

US Patent:
6026130, Feb 15, 2000
Filed:
May 9, 1997
Appl. No.:
8/853430
Inventors:
Muhammad M. Rahmatullah - Austin TX
Philip Yip - Austin TX
Saf Asghar - Austin TX
Assignee:
Advanced Micro Devices, Inc. - Sunnyvale CA
International Classification:
H03D 100
H04L 2714
US Classification:
375340
Abstract:
The present invention comprises a system and method for a GSM receiver to perform channel estimation under the assumption that the analog-to-digital (A/D) converter is free-running. A search process is employed, whereby the known GSM training signal is sampled with a plurality of phases which vary incrementally from zero to a full symbol period. For each phase a sample set (of the training signal) is generated. Furthermore, each sample set is used, together with the received samples, in a cross-correlation procedure to obtain a candidate impulse response vector for the transmission channel. Thus a plurality of candidate impulse response vectors are produced, one of which will be selected to be the optimal representative for the transmission channel. The optimal impulse response vector is selected as follows. Each impulse response vector is convolved with the corresponding sample set, thus producing an estimated output vector.

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