CA2063922A1 - Selective transmission of encoded voice information representing silence - Google Patents

Selective transmission of encoded voice information representing silence

Info

Publication number
CA2063922A1
CA2063922A1 CA2063922A CA2063922A CA2063922A1 CA 2063922 A1 CA2063922 A1 CA 2063922A1 CA 2063922 A CA2063922 A CA 2063922A CA 2063922 A CA2063922 A CA 2063922A CA 2063922 A1 CA2063922 A1 CA 2063922A1
Authority
CA
Canada
Prior art keywords
information
voice information
transmitted
packets
silence
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2063922A
Other languages
French (fr)
Other versions
CA2063922C (en
Inventor
Alan L. Wilson
Christopher P. Moreno
Donald G. Newberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of CA2063922A1 publication Critical patent/CA2063922A1/en
Application granted granted Critical
Publication of CA2063922C publication Critical patent/CA2063922C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/344—Muting responsive to the amount of noise (noise squelch)

Abstract

Discrete packets (306) containing encoded voice information are transmitted within frames (301 and 302) in a repetitive manner until all voice information has been sent. Following transmission of all packets containing such voice information, at least a predetermined number of additional packets (401) are then transmitted, which additional packets represent silence. Following this, a disconnect signal (304) is transmitted. So configured, loss of the disconnect signal due to fading or other communication pathway disturbances will not necessarily lead to audibilization of undesired sounds, as the decoding protocol at the receiver (200) provides for reprocessing of recently received packet information in the absence of newly available reliable information. Hence, the silence information is continually reprocessed until either reliable information is again available or a time out sequence concludes.
CA002063922A 1991-05-30 1992-03-25 Selective transmission of encoded voice information representing silence Expired - Lifetime CA2063922C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US706,910 1991-05-30
US07/706,910 US5220565A (en) 1991-05-30 1991-05-30 Selective transmission of encoded voice information representing silence

Publications (2)

Publication Number Publication Date
CA2063922A1 true CA2063922A1 (en) 1992-12-01
CA2063922C CA2063922C (en) 1996-09-17

Family

ID=24839581

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002063922A Expired - Lifetime CA2063922C (en) 1991-05-30 1992-03-25 Selective transmission of encoded voice information representing silence

Country Status (2)

Country Link
US (1) US5220565A (en)
CA (1) CA2063922C (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6389010B1 (en) * 1995-10-05 2002-05-14 Intermec Ip Corp. Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
EP0756267A1 (en) * 1995-07-24 1997-01-29 International Business Machines Corporation Method and system for silence removal in voice communication
US5881373A (en) * 1996-08-28 1999-03-09 Telefonaktiebolaget Lm Ericsson Muting a microphone in radiocommunication systems
US5897613A (en) * 1997-10-08 1999-04-27 Lucent Technologies Inc. Efficient transmission of voice silence intervals
US6438131B1 (en) * 1998-07-28 2002-08-20 Lucent Technologies Inc. Low-overhead service specific convergence layer for voice and telephony over packet-based systems
US7054279B2 (en) * 2000-04-07 2006-05-30 Broadcom Corporation Method and apparatus for optimizing signal transformation in a frame-based communications network
US6885987B2 (en) 2001-02-09 2005-04-26 Fastmobile, Inc. Method and apparatus for encoding and decoding pause information
US7260439B2 (en) * 2001-11-01 2007-08-21 Fuji Xerox Co., Ltd. Systems and methods for the automatic extraction of audio excerpts
US7944847B2 (en) * 2007-06-25 2011-05-17 Efj, Inc. Voting comparator method, apparatus, and system using a limited number of digital signal processor modules to process a larger number of analog audio streams without affecting the quality of the voted audio stream
US8712362B2 (en) * 2008-07-26 2014-04-29 Enforcement Video, Llc Method and system of extending battery life of a wireless microphone unit
US20220416996A1 (en) * 2021-06-25 2022-12-29 Graphcore Limited Block Cipher Encryption Pipeline

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660765A (en) * 1970-04-13 1972-05-02 Motorola Inc Squelch circuit having short and long time constant filters for squelch tail elimination
US3654555A (en) * 1970-08-19 1972-04-04 Motorola Inc Carrier and tone squelch circuit with elimination of noise at end of transmission
US3899739A (en) * 1973-09-04 1975-08-12 Gen Electric Decode squelch circuit for a continuous tone control radio receiver
USRE32789E (en) * 1975-11-24 1988-11-22 Motorola, Inc. Transmission trunk multichannel dispatch system with priority queuing
US4132953A (en) * 1977-09-29 1979-01-02 General Electric Company Squelch circuit for a radio receiver
US4344175A (en) * 1980-12-22 1982-08-10 General Electric Company Muting circuit
EP0162173B1 (en) * 1984-05-23 1989-08-16 International Business Machines Corporation Digital transmission system for a packetized voice
KR880700558A (en) * 1984-12-31 1988-03-15 빈센트 죠셉 로너 Outgoing relay radio system, single / dual word signaling device and outgoing relay communication system control method.
US4905302A (en) * 1987-06-03 1990-02-27 General Electric Company Trunked radio repeater system
JPH021671A (en) * 1988-03-17 1990-01-05 Toshiba Corp Load control system for packet switchboard

Also Published As

Publication number Publication date
CA2063922C (en) 1996-09-17
US5220565A (en) 1993-06-15

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