Claims
- 1. A method comprising:
receiving a low activity communication signal; encoding the low activity communication signal in a first frame using channel-coding redundancy, the encoding comprising interleaving a sequence of bits representing the low activity signal across multiple frames; and transmitting the multiple frames to a destination.
- 2. The method of claim 1 wherein encoding the low activity communication signal includes using vocoder signatures containing sequenced bits that are spaced further apart than sequenced bits contained within standard vocoder parameters.
- 3. The method of claim 1 further comprising:
receiving the multiple frames at the destination; decoding the received frames to retrieve the sequence of bits representing the low activity communication signal, wherein the decoding comprising retrieving the sequence of bits representing the low activity communication signal based on information contained in frames adjacent to the first frame if the first frame is not received at said destination.
- 4. The method of claim 1 wherein the low activity communication signal comprises a Baudot signal.
- 5. An apparatus comprising:
an encoder to receive and encode a low activity communication signal in a first frame, the first encoder to interleave a sequence of bits representing the low activity communication signal across multiple frames and to transmit the multiple frames to a destination; and a decoder to receive the multiple frames at the destination, the decoder to retrieve the sequence of bits representing the low activity communication signal based on information contained in frames adjacent to the first frame if the first frame is not received at the destination.
- 6. The apparatus of claim 5 wherein encoding the low activity communication signal includes using vocoder signatures containing sequenced bits that are spaced further apart than sequenced bits contained within standard vocoder parameters.
- 7. The apparatus of claim 5 wherein the low activity communication signal comprises a Baudot signal.
- 8. A machine-readable medium comprising instructions which, when executed by a machine, cause the machine to perform operations including:
receiving a low activity communication signal; encoding the low activity communication signal in a first frame using channel-coding redundancy, the encoding comprising interleaving a sequence of bits representing the low activity signal across multiple frames; and transmitting the multiple frames to a destination.
- 9. The machine-readable medium of claim 8 wherein encoding the low activity communication signal includes using vocoder signatures containing sequenced bits that are spaced further apart than sequenced bits contained within standard vocoder parameters.
- 10. The machine-readable medium of claim 9 further comprising:
receiving the multiple frames at the destination; decoding the received frames to retrieve the sequence of bits representing the low activity communication signal, wherein the decoding comprising retrieving the sequence of bits representing the low activity communication signal based on information contained in frames adjacent to the first frame if the first frame is not received at said destination.
- 11. The machine-readable medium of claim 8 wherein the low activity communication signal comprises a Baudot signal.
Parent Case Info
[0001] The present Application for Patent is a Divisional Application and claims priority to patent application Ser. No. 09/152,190 entitled “Method and Apparatus Supporting TDD/TTY Modulation over Vocoded Channels,” filed Sep. 12, 1998, and assigned to the assignee hereof and hereby expressly incorporated by reference herein.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09152190 |
Sep 1998 |
US |
Child |
10420662 |
Apr 2003 |
US |