CHRISTINE Y. LIU, MD
Marriage and Family Therapists at Wheatland Rd, Dallas, TX

License number

Texas 24614

Personal information

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Name

Address

Phone

Christine Liu, age 54

508 Rocky Branch Ln, Coppell, TX 75019

Christine Liu

2802 Crystal Falls Dr, Garland, TX 75044

(972) 530-2841

Christine Liu

6640 Kings Hollow Ct, Dallas, TX 75248

Christine Liu

1520 Preston Rd APT 1, Plano, TX 75093

(972) 259-2052

Christine Liu

2600 Preston Rd, Plano, TX 75093

(972) 599-2052

Professional information

Error Detection And Error Concealment Of Convolutionally Encoded Data

US Patent:

5960010, Sep 28, 1999

Filed:

May 2, 1997

Appl. No.:

8/850429

Inventors:

Christine N. Liu - Dallas TX
Wilfrid P. LeBlanc - Vancouver, CA
Vishu R. Viswanathan - Plano TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

G06F 1110

US Classification:

371 431

Abstract:

An improved error detection and error concealment for Viterbi decoding of convolutionally encoded data is provided. The most sensitive part of the data is parity encoded and sent with parity and this data with the next most sensitive data are convolutionally encoded and sent with the least sensitive data over a transmission channel to a receiver. At the receiver the convolutionally encoded data is decoded using the Viterbi algorithm. The decoder compares the parity computed from decoded data with the decoded parity and if they are not equal generates a Bad Frame Indicator (BFI) flag and also determines which decoded parameters are likely bad and hence generates a Bad Parameter Indicator (BPI) flag for those parameters, by determining the confidence levels for the parameters and comparing against pre-selected thresholds. The decision to discard a decoded parameter is dependent on the BFI flag and the BPI flag of that parameter.