JPS5513585A - Frame synchronizing circuit - Google Patents

Frame synchronizing circuit

Info

Publication number
JPS5513585A
JPS5513585A JP8651278A JP8651278A JPS5513585A JP S5513585 A JPS5513585 A JP S5513585A JP 8651278 A JP8651278 A JP 8651278A JP 8651278 A JP8651278 A JP 8651278A JP S5513585 A JPS5513585 A JP S5513585A
Authority
JP
Japan
Prior art keywords
frame
detection result
circuit
disagreement
stored
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
JP8651278A
Other languages
Japanese (ja)
Other versions
JPS5819177B2 (en
Inventor
Masahiro Ko
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP53086512A priority Critical patent/JPS5819177B2/en
Publication of JPS5513585A publication Critical patent/JPS5513585A/en
Publication of JPS5819177B2 publication Critical patent/JPS5819177B2/en
Expired 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 shorten a synchronization restoration time by adding a function, by which the detection result of agreement or disagreement between a data train and a frame synchronous code pattern is stored, to the frame synchronizing circuit. CONSTITUTION:Agreement or disagreement between the bit pattern at the frame synchronous code position in data signals from data input terminal 11 and a frame synchronous code pattern is detected by detector circuit 12, and the detection result dependent upon circuit 12 is stored in shift register 21. The detection result stored in register 21 is read out at the next frame position and is compared with the detection result of circuit 12 by gate 27, and FF 17 is reset. Then, presence or absence of disagreement pulses of circuit 12 is detected by NAND gate 18 at the frame pulse position from frame counter 14, and FF 17 is set in case of disagreement. This operation is controlled by digital counter 24, and FF 17 is reset when the detection result of circuit 12 agrees with the detection result one frame before, thereby shortening the synchronization restoration time.
JP53086512A 1978-07-14 1978-07-14 Frame synchronization circuit Expired JPS5819177B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53086512A JPS5819177B2 (en) 1978-07-14 1978-07-14 Frame synchronization circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53086512A JPS5819177B2 (en) 1978-07-14 1978-07-14 Frame synchronization circuit

Publications (2)

Publication Number Publication Date
JPS5513585A true JPS5513585A (en) 1980-01-30
JPS5819177B2 JPS5819177B2 (en) 1983-04-16

Family

ID=13889026

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53086512A Expired JPS5819177B2 (en) 1978-07-14 1978-07-14 Frame synchronization circuit

Country Status (1)

Country Link
JP (1) JPS5819177B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791052A (en) * 1980-09-11 1982-06-07 Western Electric Co Fleming circuit
JPS59161150A (en) * 1983-03-04 1984-09-11 Fujitsu Ltd Frame synchronizing circuit
JPS627240A (en) * 1985-07-03 1987-01-14 Nec Corp Synchronization decision system
US4694321A (en) * 1984-07-18 1987-09-15 Hitachi, Ltd. Semiconductor device having bipolar transistor and integrated injection logic
US5330922A (en) * 1989-09-25 1994-07-19 Texas Instruments Incorporated Semiconductor process for manufacturing semiconductor devices with increased operating voltages

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5791052A (en) * 1980-09-11 1982-06-07 Western Electric Co Fleming circuit
JPH0288352U (en) * 1980-09-11 1990-07-12
JPS59161150A (en) * 1983-03-04 1984-09-11 Fujitsu Ltd Frame synchronizing circuit
US4694321A (en) * 1984-07-18 1987-09-15 Hitachi, Ltd. Semiconductor device having bipolar transistor and integrated injection logic
JPS627240A (en) * 1985-07-03 1987-01-14 Nec Corp Synchronization decision system
US5330922A (en) * 1989-09-25 1994-07-19 Texas Instruments Incorporated Semiconductor process for manufacturing semiconductor devices with increased operating voltages
US5408125A (en) * 1989-09-25 1995-04-18 Texas Instruments Incorporated Semiconductor process for manufacturing semiconductor device with increased operating voltages

Also Published As

Publication number Publication date
JPS5819177B2 (en) 1983-04-16

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