JPS55124345A - Transmission system - Google Patents

Transmission system

Info

Publication number
JPS55124345A
JPS55124345A JP3151379A JP3151379A JPS55124345A JP S55124345 A JPS55124345 A JP S55124345A JP 3151379 A JP3151379 A JP 3151379A JP 3151379 A JP3151379 A JP 3151379A JP S55124345 A JPS55124345 A JP S55124345A
Authority
JP
Japan
Prior art keywords
signals
quantization
led
shift
levels
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
JP3151379A
Other languages
Japanese (ja)
Inventor
Shiro Okamura
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP3151379A priority Critical patent/JPS55124345A/en
Publication of JPS55124345A publication Critical patent/JPS55124345A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation

Abstract

PURPOSE:To reduce the quantizing distortion by giving the quantization to the information signals by dividing them into several units of level quantum groups featuring the quantization level shift. CONSTITUTION:Waveforms 3 and 4 of signals 1 and 2 are led into quantizers 5 and 5' and then quantized at quantization levels 15 and 16 to be led to coders 6 and 7. In this case, levels 15 and 16 shift by about 1/2 quantum to each other. The signals encoded through encoders 5 and 6 are led to decoders 9 and 10 via track 8 of the memory unit or the transmission line. Decoders 9 and 10 restore the shift of the quanta of the encoded signals for demodulation. The demodulated signal is then regenerated to the original information signal or its related signal through compounder 11. Thus the quantization levels are shifted when the information signal is quantized, and as a result the quantizing distortion of nearly one bit can be reduced.
JP3151379A 1979-03-16 1979-03-16 Transmission system Pending JPS55124345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3151379A JPS55124345A (en) 1979-03-16 1979-03-16 Transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3151379A JPS55124345A (en) 1979-03-16 1979-03-16 Transmission system

Publications (1)

Publication Number Publication Date
JPS55124345A true JPS55124345A (en) 1980-09-25

Family

ID=12333282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3151379A Pending JPS55124345A (en) 1979-03-16 1979-03-16 Transmission system

Country Status (1)

Country Link
JP (1) JPS55124345A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363026A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Automatic control device for ex posure amount of electrophotographic copier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5363026A (en) * 1976-11-18 1978-06-06 Ricoh Co Ltd Automatic control device for ex posure amount of electrophotographic copier

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