Multiplex communications – Fault recovery
Reexamination Certificate
2007-11-15
2010-06-15
Ton, Dang T (Department: 2475)
Multiplex communications
Fault recovery
C370S351000, C370S352000
Reexamination Certificate
active
07738361
ABSTRACT:
A method and apparatus that generates fill frames for Voice over Internet Protocol (VoIP) applications in a communication device is disclosed. The method may include determining if there is a lost frame in a received communication, wherein if it is determined that there is a lost frame, setting a frame loss flag and storing the frame loss flag in the frame loss history register, shifting a loss history register, a line spectral frequency (LSF) history register, a voicing cutoff (VCUT) history register, a pitch history register, and a root mean squared (RMS) gain history register, wherein the loss history register, the LSF history register, the VCUT history register, the pitch history register, and the RMS history register include at least three registers, the three registers being a newest, a middle and an oldest registers, reading the frame loss flag into a newest loss history register, determining contents of the middle register of each of the LSF history register, the VCUT history register, the pitch history register, and the RMS history register, and sending the contents of the middle registers to a synthesizer to generate an output speech signal.
REFERENCES:
patent: 5615214 (1997-03-01), Chandos et al.
patent: 6067511 (2000-05-01), Grabb et al.
patent: 6073093 (2000-06-01), Zinser, Jr. et al.
patent: 6078880 (2000-06-01), Zinser, Jr. et al.
patent: 6081776 (2000-06-01), Grabb et al.
patent: 6081777 (2000-06-01), Grabb
patent: 6094629 (2000-07-01), Grabb et al.
patent: 6098036 (2000-08-01), Zinser, Jr. et al.
patent: 6119082 (2000-09-01), Zinser, Jr. et al.
patent: 6138092 (2000-10-01), Zinser, Jr. et al.
patent: 6549886 (2003-04-01), Partalo
patent: 6584104 (2003-06-01), McGowan
patent: 2003/0161310 (2003-08-01), Dobbins et al.
patent: 2005/0010401 (2005-01-01), Sung et al.
patent: 2005/0044471 (2005-02-01), Chia et al.
patent: 2005/0049853 (2005-03-01), Lee et al.
Perkins, Colin et al “A Survey of Packet Loss Recovery Techniques for Streaming Audio.” IEEE Network—Sep./Oct. 1998.
International Search Report for related application No. PCT/US2008/083299; dated Dec. 29, 2008.
http://www.globalipsound.com/datasheets/NetEQ.pdf.
ITU-T Recommendation G.729, International Telecommunications Union, Mar. 1996, pp. 31-32.
ITU-T Recommendation G.729 Annex D, International Telecommunications Union, Sep. 1998, p. 3.
ITU-T Recommendation G.729 Annex E, International Telecommunications Union, Sep. 1998, pp. 17-18.
ITU-T Recommendation G.711 Appendix I, International Telecommunications Union, Sep. 1999.
Egan Martin W.
Zinser, Jr. Richard L.
Lockheed Martin Corporation
Morlan Robert M
Prass LLP
Prass, Jr. Ronald E.
Ton Dang T
LandOfFree
Method and apparatus for generating fill frames for voice... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for generating fill frames for voice..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating fill frames for voice... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4232055