Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6772126 | Method and apparatus for transferring low bit rate digital voice messages using incremental messages | Floyd D. Simpson, Sunil Satyamurti, Kenneth Finlon, Robert J. Schwendeman | 2004-08-03 |
| 6691081 | Digital signal processor for processing voice messages | Kenneth Finlon, Floyd D. Simpson | 2004-02-10 |
| 6597915 | System and method for updating location information for distributed communication devices | Qicai Shi, Edgar H. Callaway, Jr. | 2003-07-22 |
| 6496798 | Method and apparatus for encoding and decoding frames of voice model parameters into a low bit rate digital voice message | Floyd D. Simpson, Sunil Satyamurti, Oleg Andric, Kenneth Finlon | 2002-12-17 |
| 6418405 | Method and apparatus for dynamic segmentation of a low bit rate digital voice message | Sunil Satyamurti, Floyd D. Simpson, Kenneth Finlon | 2002-07-09 |
| 6418407 | Method and apparatus for pitch determination of a low bit rate digital voice message | Floyd D. Simpson, Sunil Satyamurti, Kenneth Finlon | 2002-07-09 |
| 6370500 | Method and apparatus for non-speech activity reduction of a low bit rate digital voice message | Sunil Satyamurti, Floyd D. Simpson, Kenneth Finlon | 2002-04-09 |
| 6163765 | Subband normalization, transformation, and voiceness to recognize phonemes for text messaging in a radio communication system | Oleg Andric, Lu Chang, Arthur Gerald Herkert | 2000-12-19 |
| 6137867 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Robert J. Schwendeman | 2000-10-24 |
| 6073094 | Voice compression by phoneme recognition and communication of phoneme indexes and voice features | Lu Chang, Robert J. Schwendeman | 2000-06-06 |
| 6064955 | Low complexity MBE synthesizer for very low bit rate voice messaging | Kenneth Finlon, Floyd D. Simpson | 2000-05-16 |
| 6052443 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Robert J. Schwendeman | 2000-04-18 |
| 6018706 | Pitch determiner for a speech analyzer | Floyd D. Simpson, Xiaojun Li | 2000-01-25 |
| 5974121 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Robert J. Schwendeman | 1999-10-26 |
| 5806038 | MBE synthesizer utilizing a nonlinear voicing processor for very low bit rate voice messaging | Floyd D. Simpson, Xiaojun Li | 1998-09-08 |
| 5781882 | Very low bit rate voice messaging system using asymmetric voice compression processing | Walter L. Davis, Leon Jasinski | 1998-07-14 |
| 5692019 | Communication device having antenna switch diversity, and method therefor | Chun-Ye Susan Chang, Lu Chang, Lorenzo A. Ponce De Leon, David R. Petreye, James Michael Keba +1 more | 1997-11-25 |
| 5684926 | MBE synthesizer for very low bit rate voice messaging systems | Xiaojun Li, Floyd D. Simpson | 1997-11-04 |
| 5682462 | Very low bit rate voice messaging system using variable rate backward search interpolation processing | Floyd D. Simpson, Xiaojun Li | 1997-10-28 |
| 5666350 | Apparatus and method for coding excitation parameters in a very low bit rate voice messaging system | Xiaojun Li, Floyd D. Simpson | 1997-09-09 |
| 5636231 | Method and apparatus for minimal redundancy error detection and correction of voice spectrum parameters | Xiaojun Li, Floyd D. Simpson | 1997-06-03 |
| 5475863 | Method and apparatus for delivering messages to portable communication units in a radio communication system | Floyd D. Simpson, David F. Willard | 1995-12-12 |
| 5434856 | Method for monitoring communication talkgroups | — | 1995-07-18 |
| 5287552 | Method for more efficient service request processing | Michael D. Sasuta | 1994-02-15 |
| 4766591 | Random multiple-access communication system | — | 1988-08-23 |