Patent EP0255065A2 successfully refreshed from Google Patents.
EP0255065A2
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EP
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Burst signal detection apparatus
Assignee: NEC Corp
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Filing: 1987-07-24
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Granted: —
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Expires: 2007-07-24
Abstract
Abstract The burst signal detection apparatus comprises a channel quality detector (104) parallel to an error-correcting decoder (101). The output or detect signal (5) of the channel quality detector (104) is fed to an ouput circuit (105) together with an arrival signal (4) 10 and a decision signal (6). The channel quality detector (104) recodes an output of the error-correcting decoder (101),i.e. decoded data,and compares it with the input to the error correcting decoder (101), i.e. data contained in the burst signal (1), thereby estimating a channel error. When the estimated channel error is less than a threshold (a count number), the channel channel quality detector (104) produces the detect signal (5).This signal detecting apparatus allows the probability of reception of erroneous data to become extremely small.
Inventors
- 👤 Susumu C/O Nec Corporation Otani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:25
CPC Classifications
H; H04; H04L; H04L1/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A burst signal detection apparatus comprising: a unique word detector for receiving a burst signal comprising data undergone CRC coding and error-correction coding and a unique word that precedes the data, and for detecting the unique word out of the burst signal received; an error-correcting decoder for decoding an error-correction code with regard to the data; a CRC error detector for receiving decoded data output by said error-correcting decoder to detect a CRC error; a channel quality detector for detecting channel quality based on one of an input/output condition and a decoding condition of said error-correcting decoder; and an output circuit for outputting a detection signal in response to outputs of said unique word detector, CRC error detector, and channel quality detector.
Claim 2
Dependent Claim
122 words
A burst signal detection apparatus comprising: a unique word detector for receiving a burst signal comprising data undergone CRC coding and error-correction coding and a unique word that precedes the data, and for detecting the unique word out of the burst signal received; an error-correcting decoder for decoding an error-correction code with regard to the data; a CRC error detector for receiving decoded data output by said error-correcting decoder to detect a CRC error; a channel quality detector for detecting channel quality based on one of an input/output condition and a decoding condition of said error-correcting decoder; and an output circuit for outputting a detection signal in response to outputs of said unique word detector, CRC error detector, and channel quality detector.
Claim 3
Dependent Claim
18 words
A burst signal detection apparatus as claimed in Claim 1, wherein the output circuit comprises an AND gate.
Claim 4
Dependent Claim
136 words
A burst signal detection apparatus which receives a burst signal comprising CRC coded and error-correction coded data and a unique word preceding the data, comprising a unique word detector means for detecting the unique word out of the burst signal; an error-correcting decoder means for decoding the error-correction coded data; a CRC error detector means for decoding the output of the error-correcting decoder means to detect a CRC error; an output circuit means for providing a detection signal in response to the outputs of the unique word detector means and the CRC error detector means, characterized by further comprising a channel quality detector means for detecting channel quality based on one of an input/output condition and a decoding condition of the error-correcting decoder means to supply its output to an input of the output circuit means.
Claim 5
Dependent Claim
136 words
A burst signal detection apparatus which receives a burst signal comprising CRC coded and error-correction coded data and a unique word preceding the data, comprising a unique word detector means for detecting the unique word out of the burst signal; an error-correcting decoder means for decoding the error-correction coded data; a CRC error detector means for decoding the output of the error-correcting decoder means to detect a CRC error; an output circuit means for providing a detection signal in response to the outputs of the unique word detector means and the CRC error detector means, characterized by further comprising a channel quality detector means for detecting channel quality based on one of an input/output condition and a decoding condition of the error-correcting decoder means to supply its output to an input of the output circuit means.
References Cited (Backward Citations)
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