MY111914A - Satellite receiver code rate switching apparatus - Google Patents

Satellite receiver code rate switching apparatus

Info

Publication number
MY111914A
MY111914A MYPI94003110A MYPI19943110A MY111914A MY 111914 A MY111914 A MY 111914A MY PI94003110 A MYPI94003110 A MY PI94003110A MY PI19943110 A MYPI19943110 A MY PI19943110A MY 111914 A MY111914 A MY 111914A
Authority
MY
Malaysia
Prior art keywords
signal
code rate
reed
switching apparatus
satellite receiver
Prior art date
Application number
MYPI94003110A
Inventor
Sidney Stewart John
Original Assignee
Thomson Consumer Electronics 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
Priority claimed from PCT/US1993/011338 external-priority patent/WO1995015033A1/en
Application filed by Thomson Consumer Electronics Inc filed Critical Thomson Consumer Electronics Inc
Publication of MY111914A publication Critical patent/MY111914A/en

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Radio Relay Systems (AREA)
  • Error Detection And Correction (AREA)

Abstract

A SATELLITE SIGNAL RECEIVER INCLUDES AN INPUT DEMODULATOR (25) FOLLOWED BY A VITERBI DECODER (26) AND A REED-SOLOMON DECODER (28) .A RECEIVED SIGNAL IS ENCODED WITH INFORMATION INCLUDING ERROR-REPRESENTATIVE INFORMATION, AND EXHIBITS AN ERROR CORRECTION CODE RATE WHICH IS A FUNCTION OF THE POWER LEVEL OF A SATELLITE TRANSMITTED SIGNAL. THE DEMODULATOR (25) PRODUCES CONTROL SIGNALS REPRESENTING THE PRESENCE OR ABSENCE OF SYNCHRONISM WITH THE RECEIVED SIGNAL, AND SIGNAL QUALITY (E.G., SIGNAL-TO-NOISE RATIO). THE REED-SOLOMON DECODER (28) PRODUCES A CONTROL SIGNAL INDICATING WHETHER OR NOT ERROR DETECTION AND CORRECTION IS OCCURRING PROPERLY. THESE CONTROL SIGNALS ARE SENSED BY A CONTROL NETWORK (22, 23) TO CHANGE THE CODE RATE OF THE VITERBI DECODER IF NECESSARY .(FIG 2)
MYPI94003110A 1993-11-22 1994-11-22 Satellite receiver code rate switching apparatus MY111914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1993/011338 WO1995015033A1 (en) 1993-11-22 1993-11-22 Satellite receiver code rate switching apparatus

Publications (1)

Publication Number Publication Date
MY111914A true MY111914A (en) 2001-02-28

Family

ID=22237211

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI94003110A MY111914A (en) 1993-11-22 1994-11-22 Satellite receiver code rate switching apparatus

Country Status (3)

Country Link
JP (1) JP3380252B2 (en)
DE (1) DE69332701T2 (en)
MY (1) MY111914A (en)

Also Published As

Publication number Publication date
DE69332701D1 (en) 2003-03-27
JP3380252B2 (en) 2003-02-24
DE69332701T2 (en) 2003-07-31
JPH09505703A (en) 1997-06-03

Similar Documents

Publication Publication Date Title
KR960706230A (en) Satellite receiver code rate switching apparatus
MX9800366A (en) Apparatus for decoding video signals encoded in different formats.
ES2088716A1 (en) Error detection system
MY112514A (en) Apparatus for demodulating and decoding video signals encoded in different formats
GB2271256A (en) Error detection system
TW324803B (en) Rob bit compensation system and method associated with a receiver or codec
ATE180373T1 (en) RECEIVING APPARATUS AND METHOD
NO180510B (en) Procedure for detection and concealment of errors using predicted signal values
MY110982A (en) Method and apparatus for determining signal usability
JPS57159148A (en) Adaptive modulation system
NO934273L (en) Radio frequency error detection and correction system
EP0844758A3 (en) Non-equalized digital receiver using block decoding with erasure and error correction
JPS5753802A (en) Processor of digital signal
CA2208660A1 (en) Data transmission device
CA2037535A1 (en) Demodulating system capable of accurately equalizing received signals using error correction codes
MY137013A (en) Receiver decoder circuitry, and associated method, for decoding an encoded signal
GB2136251A (en) Dedicated message matched filter
GB2258374A (en) Adjusting the level of an audio signal
US5615297A (en) Transmission system for coded speech signals and/or voiceband data
MY111914A (en) Satellite receiver code rate switching apparatus
SG48300A1 (en) Transmission system and receiver to be used in the transmission system
JPS5537005A (en) Communication mode setting system
GB2131253A (en) Error-correcting decoder
JPS5452907A (en) Data transfer unit
JPS5789349A (en) Decoder for error correction code