JPH0230238A - Digital information transmission system - Google Patents

Digital information transmission system

Info

Publication number
JPH0230238A
JPH0230238A JP17919888A JP17919888A JPH0230238A JP H0230238 A JPH0230238 A JP H0230238A JP 17919888 A JP17919888 A JP 17919888A JP 17919888 A JP17919888 A JP 17919888A JP H0230238 A JPH0230238 A JP H0230238A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
error correction
information
coding circuits
correction coding
output
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.)
Pending
Application number
JP17919888A
Inventor
Akisuke Shikakura
Original Assignee
Canon 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

Links

Abstract

PURPOSE: To efficiently realize information transmission even if an error ratio of the transmission line is fluctuated by selecting the error correction capability adaptively in response to the state of the transmission line.
CONSTITUTION: An addition circuit 40 gives a synchronous signal for the transmission and an ID signal to a synthesis information signal outputted from a time base conversion memory 38 at every prescribed information quantity. Error correction coding circuits 42, 44 add a parity bit to an output of the addition circuit 40 to form and add an error correction code. The error correction coding circuits 42, 44 form an error correction code with different error correction capabilities and either of them is functioned effectively under the command of a mode selection circuit 46. The mode selection circuit 46 selects the error correction coding circuits 42, 44 and also gives a command to the time base conversion memory 38 to adjust the quantity of information of the synthesized information output. The output of the error correction coding circuits 42, 44 is sent to the transmission line via a modulation circuit 48.
COPYRIGHT: (C)1990,JPO&Japio
JP17919888A 1988-07-20 1988-07-20 Digital information transmission system Pending JPH0230238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17919888A JPH0230238A (en) 1988-07-20 1988-07-20 Digital information transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17919888A JPH0230238A (en) 1988-07-20 1988-07-20 Digital information transmission system

Publications (1)

Publication Number Publication Date
JPH0230238A true true JPH0230238A (en) 1990-01-31

Family

ID=16061646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17919888A Pending JPH0230238A (en) 1988-07-20 1988-07-20 Digital information transmission system

Country Status (1)

Country Link
JP (1) JPH0230238A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03292023A (en) * 1990-04-10 1991-12-24 Nec Corp Interleave stage number variable and error correction transmission system
JPH06311140A (en) * 1993-04-21 1994-11-04 Nec Corp Error detection device
JPH08322042A (en) * 1995-05-25 1996-12-03 Nec Corp Digital image transmission/reception system
US7164710B2 (en) 1998-05-15 2007-01-16 Lg Electronics Inc. Rate adaptation for use in adaptive multi-rate vocoder
JP2008005046A (en) * 2006-06-20 2008-01-10 Oki Electric Ind Co Ltd Encryption communication system
US8009375B2 (en) 1990-07-06 2011-08-30 Hitachi Consumer Electronics Co., Ltd. Apparatus and method for receiving and recording digital information

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03292023A (en) * 1990-04-10 1991-12-24 Nec Corp Interleave stage number variable and error correction transmission system
US8009375B2 (en) 1990-07-06 2011-08-30 Hitachi Consumer Electronics Co., Ltd. Apparatus and method for receiving and recording digital information
JPH06311140A (en) * 1993-04-21 1994-11-04 Nec Corp Error detection device
JPH08322042A (en) * 1995-05-25 1996-12-03 Nec Corp Digital image transmission/reception system
US7164710B2 (en) 1998-05-15 2007-01-16 Lg Electronics Inc. Rate adaptation for use in adaptive multi-rate vocoder
US7558359B2 (en) 1998-05-15 2009-07-07 Lg Electronics Inc. System and method for adaptive multi-rate (AMR) vocoder rate adaptation
US7613270B2 (en) 1998-05-15 2009-11-03 Lg Electronics Inc. System and method for adaptive multi-rate (AMR) vocoder rate adaptation
US8265220B2 (en) 1998-05-15 2012-09-11 Lg Electronics Inc. Rate adaptation for use in adaptive multi-rate vocoder
JP2008005046A (en) * 2006-06-20 2008-01-10 Oki Electric Ind Co Ltd Encryption communication system

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