Title:
【発明の名称】ボコーダ処理されたチャネル上でTDD/TTY変調をサポートするための方法及び装置
Document Type and Number:
Japanese Patent JP2003506968
Kind Code:
A
Abstract:
A method used to encode/decode a low activity communication signal - such as a Baudot tone - for transmission over a telecommunications system (100). The telecommunications system (100) may include any number of wireless links. Once the system (100) is noticed that a low activity signal needs to be transmitted, each vocoder used in the system (100) to encode/decode the signal performs a unique encoding/decoding process. In one embodiment, frames containing errors adversely affecting a signal are delivered to the vocoder and the "soft bits" contained therein are used to determine the original signal transmitted. In another embodiment, encoding of the signal may include encoding the signal using redundancy with the encoded signal being spread across multiple vocoder frames.
Inventors:
Rying, Nikolai K.N.
Application Number:
JP2001515594A
Publication Date:
February 18, 2003
Filing Date:
August 03, 2000
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04J3/00; H04B7/26; H04L1/08; H04L12/56; H04L17/00; H04L29/06; H04M1/72478; H04M11/00; H04W48/08; G10L19/005; H04W28/04; (IPC1-7): H04B7/26; H04J3/00; H04M11/00
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)