Voice data transmission system and method
US5148429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1989 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Oct 25, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5671
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A voice data transmission system and method which can reduce transmission delay time and can remove unnatural conversation in a received voice signal due to the truncation of a head part of the voice signal. The signal transmission side of the voice data transmission system, when a voice detection signal is generated, continuously transmits, at a transmission rate faster than a usual transmission rate, a first voice data block at the time of generation of the voice detection signal as well as voice data blocks which are followed by the first voice data block and which correspond to a time duration from the generation time of the voice detection signal block to a predetermined time. In a voice detection mode, the data transmission side subjects voice data to a block formation operation and, after the block formation is completed, transmits the voice data block. The signal reception side of the data transmission system, when receiving a voice packet signal followed by the continuation of a predetermined time of silence, estimates a fluctuation absorbing delay time for the voice packet signal on the basis of transmission delay times between packets corresponding to its head part, and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.