JPS57141163A - Transmitter - Google Patents

Transmitter

Info

Publication number
JPS57141163A
JPS57141163A JP2790981A JP2790981A JPS57141163A JP S57141163 A JPS57141163 A JP S57141163A JP 2790981 A JP2790981 A JP 2790981A JP 2790981 A JP2790981 A JP 2790981A JP S57141163 A JPS57141163 A JP S57141163A
Authority
JP
Japan
Prior art keywords
bits
data
transmission time
circuit
transmitted
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
JP2790981A
Other languages
Japanese (ja)
Inventor
Shigeru Tagaito
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP2790981A priority Critical patent/JPS57141163A/en
Publication of JPS57141163A publication Critical patent/JPS57141163A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4902—Pulse width modulation; Pulse position modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To shorten the transmission time of a transmitter which encodes and transmits data by two kinds of bits having a short and a long transmission time, by inverting all bits when there are many bits having the long transmission time. CONSTITUTION:A transmitter consists of a input circuit 1, a control circuit 2, a data register circuit 3, an oscillating circuit 4, a timing generating circuit 5, and an output circuit 6. Transmitted data are transmitted by being coded by two kinds of bits having a shot and a long transmission time. The control circuit 2 discriminates whether the total number of bits having the short transmission time is equal to or less than (total bit number minus one)/2 and, when the discrimination result meets requirements, inverts all bits of the data to transmit an inversion flag ''1'' and the inverted data. When not, a noninversion flag ''0'' and noninverted data are transmitted.
JP2790981A 1981-02-26 1981-02-26 Transmitter Pending JPS57141163A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2790981A JPS57141163A (en) 1981-02-26 1981-02-26 Transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2790981A JPS57141163A (en) 1981-02-26 1981-02-26 Transmitter

Publications (1)

Publication Number Publication Date
JPS57141163A true JPS57141163A (en) 1982-09-01

Family

ID=12234003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2790981A Pending JPS57141163A (en) 1981-02-26 1981-02-26 Transmitter

Country Status (1)

Country Link
JP (1) JPS57141163A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276641A2 (en) * 1986-12-03 1988-08-03 Cray Research, Inc. Data coding interface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0276641A2 (en) * 1986-12-03 1988-08-03 Cray Research, Inc. Data coding interface

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