JPS5558648A - Code decision system - Google Patents

Code decision system

Info

Publication number
JPS5558648A
JPS5558648A JP13203378A JP13203378A JPS5558648A JP S5558648 A JPS5558648 A JP S5558648A JP 13203378 A JP13203378 A JP 13203378A JP 13203378 A JP13203378 A JP 13203378A JP S5558648 A JPS5558648 A JP S5558648A
Authority
JP
Japan
Prior art keywords
code
information
decided
rom5
quadrant
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
JP13203378A
Other languages
Japanese (ja)
Other versions
JPS5822896B2 (en
Inventor
Yasukazu Ito
Kazuo Murano
Shigeyuki Umigami
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP53132033A priority Critical patent/JPS5822896B2/en
Publication of JPS5558648A publication Critical patent/JPS5558648A/en
Publication of JPS5822896B2 publication Critical patent/JPS5822896B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To make it possible to decide the code of transmission signals without increment of the capacity of a ROM by making x and y coordinates of receiving information into absolute values and comparing them with the comparison table of the ROM and deciding the code after decision of the position on the first quadrant. CONSTITUTION:After stored in 5-bit address registers 1 and 2 for x and y coordinates, x coordinate information and y coordinate information of receiving information are made into absolute values by absolute value circuits 3 and 4. Then, they are outputted from circuits 3 and 4 as 4-bit address information and are compared with the comparison table of 4-bit information stored in ROM5, and the position on the first quadrant is decided, and the code is decided in 6. As a result, the code of transmission signals can be decided effectively without increment of the capacity of ROM5.
JP53132033A 1978-10-26 1978-10-26 Sign determination method Expired JPS5822896B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53132033A JPS5822896B2 (en) 1978-10-26 1978-10-26 Sign determination method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53132033A JPS5822896B2 (en) 1978-10-26 1978-10-26 Sign determination method

Publications (2)

Publication Number Publication Date
JPS5558648A true JPS5558648A (en) 1980-05-01
JPS5822896B2 JPS5822896B2 (en) 1983-05-12

Family

ID=15071919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53132033A Expired JPS5822896B2 (en) 1978-10-26 1978-10-26 Sign determination method

Country Status (1)

Country Link
JP (1) JPS5822896B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188144A (en) * 1988-01-22 1989-07-27 Canon Inc Data deciding method
JPH04292041A (en) * 1991-03-20 1992-10-16 Fujitsu Ltd Carrier control signal generation circuit in eight-phase demodulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871557A (en) * 1971-12-21 1973-09-27
JPS5219019A (en) * 1975-07-31 1977-01-14 Milgo Electronic Corp Binary equalizing method and device for audio band phase modulation modem
JPS52109318A (en) * 1976-03-10 1977-09-13 Sharp Corp Data transmitting system utilized multi-vector signal method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871557A (en) * 1971-12-21 1973-09-27
JPS5219019A (en) * 1975-07-31 1977-01-14 Milgo Electronic Corp Binary equalizing method and device for audio band phase modulation modem
JPS52109318A (en) * 1976-03-10 1977-09-13 Sharp Corp Data transmitting system utilized multi-vector signal method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01188144A (en) * 1988-01-22 1989-07-27 Canon Inc Data deciding method
JPH04292041A (en) * 1991-03-20 1992-10-16 Fujitsu Ltd Carrier control signal generation circuit in eight-phase demodulator

Also Published As

Publication number Publication date
JPS5822896B2 (en) 1983-05-12

Similar Documents

Publication Publication Date Title
Tutte A non-Hamiltonian graph
JPS5558648A (en) Code decision system
EP0359254A3 (en) Method of back-tracking in computer processing
JPS5543689A (en) Character input system
JPS5552178A (en) Pattern read-in system
JPS5478940A (en) Code conversion system
JPS5727348A (en) Address converter
JPS53110334A (en) Patern correction system
JPS5437646A (en) Program loading system
JPS5257465A (en) Overdrive controlling oilhydraulic system
JPS54145441A (en) Converter
JPS52105870A (en) Absolute-value comparing circuit
JPS5435643A (en) Load system of microprogram
JPS52147022A (en) Key input system
JPS5794849A (en) Microprogram controller
JPS52129343A (en) Command chaining system
JPS5356936A (en) Transfer control system
JPS5251807A (en) Pilot circuit selection circuit
JPS531286A (en) Crosslinking of chlorinated polyethylene
JPS51133874A (en) Carry-in and ou t equipment of article
JPS6462759A (en) Parallel processing system
JPS5372666A (en) Level switch circuit
JPS52132648A (en) Priority selector circuit
JPS5418145A (en) Air conditioner
JPS5552131A (en) Subchannel control system