JPS57193153A - Frame synchronism detecting device - Google Patents

Frame synchronism detecting device

Info

Publication number
JPS57193153A
JPS57193153A JP56077540A JP7754081A JPS57193153A JP S57193153 A JPS57193153 A JP S57193153A JP 56077540 A JP56077540 A JP 56077540A JP 7754081 A JP7754081 A JP 7754081A JP S57193153 A JPS57193153 A JP S57193153A
Authority
JP
Japan
Prior art keywords
data
frame
bit
tdt
series
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
JP56077540A
Other languages
Japanese (ja)
Other versions
JPH0244177B2 (en
Inventor
Yoshiichi Nishimura
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP56077540A priority Critical patent/JPS57193153A/en
Publication of JPS57193153A publication Critical patent/JPS57193153A/en
Publication of JPH0244177B2 publication Critical patent/JPH0244177B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements

Abstract

PURPOSE:To pick up accurate frame information from a received data stream quickly, by using the nature of autocorrelation of scramble codes without the insertion of a frame synchronizing signal in data. CONSTITUTION:To each one bit of a specified number of data bits a1-a31, a data DT1 of one frame added substantially with a parity bit, and a scramble code M series SC1 in bits b1-b31 equal to that of the data DT1 of one frame added with a redundant bit O for each one bit are mutually synchronized for scrambling to transmit a transmission data stream TDT. At the reception side, the transmission data TDT and the M series SC1 the same as that used at the transmission side are descrambled with the same position relation at scrambling, allowing to make parity check, and the frame synchronism can be detected by varying the relation of position between the data stream TDT and the scramble code M series SC1 until the result becomes correct.
JP56077540A 1981-05-22 1981-05-22 Frame synchronism detecting device Granted JPS57193153A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077540A JPS57193153A (en) 1981-05-22 1981-05-22 Frame synchronism detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077540A JPS57193153A (en) 1981-05-22 1981-05-22 Frame synchronism detecting device

Publications (2)

Publication Number Publication Date
JPS57193153A true JPS57193153A (en) 1982-11-27
JPH0244177B2 JPH0244177B2 (en) 1990-10-03

Family

ID=13636824

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077540A Granted JPS57193153A (en) 1981-05-22 1981-05-22 Frame synchronism detecting device

Country Status (1)

Country Link
JP (1) JPS57193153A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631128A (en) * 1986-06-20 1988-01-06 Fujitsu Ltd Synchronizing control system
JPS6359131A (en) * 1986-08-28 1988-03-15 Nec Corp Data transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS631128A (en) * 1986-06-20 1988-01-06 Fujitsu Ltd Synchronizing control system
JPS6359131A (en) * 1986-08-28 1988-03-15 Nec Corp Data transmission system

Also Published As

Publication number Publication date
JPH0244177B2 (en) 1990-10-03

Similar Documents

Publication Publication Date Title
EP0758168A4 (en) Variable rate transmitting method, and transmitter and receiver using it
JPS57136833A (en) Time-division multiplex data transmitting method
EP0402115A3 (en) Error detection and correction device
GB2264846A (en) Extended error correction of a transmitted data message
GB2075309B (en) Processing binary data framing
IL74358A (en) Method and apparatus for detecting the collision of data packets
JPS57193153A (en) Frame synchronism detecting device
JPS5381222A (en) Digital signal transmitting system
GB2229066A (en) Data transmission method
GB1448178A (en) Error detection and correction in data transmission
SE8004301L (en) DIGITAL TRANSMISSION EQUIPMENT WITH CODING AND DECODING EQUIPMENT
ES2098268T3 (en) MODEM ABLE TO DETECT A STATE OF SYNCHRONISM OUT OF FRAME.
JPS5495105A (en) Data transfer system
IE38253B1 (en) Improvements in data transmission systems
JPS577658A (en) Pulse-coding system for burst signal
JPS5449002A (en) Secret communication system
JP2603498B2 (en) Digital multiplex radio equipment
DE3363042D1 (en) System for decoding control signals transmitted by a group of cyclical and synchronized pulse transmitters
JPS6447153A (en) Dummy data and normal data transmission/reception system
JPS6096044A (en) Line identification system
ATE492073T1 (en) DEVICE FOR EXCHANGING DIGITAL DATA IN A CDMA SYSTEM
JPS54918A (en) Facsimile transmission system
US3437996A (en) Error correcting circuit
GB1366908A (en) Data transmission
AU2255783A (en) Processing a t.d.m signal