JPS56149844A - Signal encoding transmission equipment - Google Patents

Signal encoding transmission equipment

Info

Publication number
JPS56149844A
JPS56149844A JP5380580A JP5380580A JPS56149844A JP S56149844 A JPS56149844 A JP S56149844A JP 5380580 A JP5380580 A JP 5380580A JP 5380580 A JP5380580 A JP 5380580A JP S56149844 A JPS56149844 A JP S56149844A
Authority
JP
Japan
Prior art keywords
signal
shift register
register
bit
range
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
JP5380580A
Other languages
Japanese (ja)
Other versions
JPS6359291B2 (en
Inventor
Tsuneo Mikado
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 Television Industry Corp
Original Assignee
Nippon Television Industry 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 Television Industry Corp filed Critical Nippon Television Industry Corp
Priority to JP5380580A priority Critical patent/JPS56149844A/en
Publication of JPS56149844A publication Critical patent/JPS56149844A/en
Publication of JPS6359291B2 publication Critical patent/JPS6359291B2/ja
Granted 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
    • H04B14/06—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation
    • H04B14/066—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using differential modulation, e.g. delta modulation using differential modulation with several bits [NDPCM]

Abstract

PURPOSE:To decode with high accuracy by transmitting an encoding data which represents a level of an input signal, together with a differential encoding signal, and correcting the cumulative distortion caused by error information of the differential encoding signal. CONSTITUTION:An audio input signal (a) is sampled by the AD converter 1 and is converted to a PCM signal of 12 bits. This 12 bit PCM signal is input to the shift register 2, and the upper rank 2 bits representing 1/2 and 1/4 of the full range are extracted to the shift register 3. A difference between the present sampled value (output of register 2) and the previous sampled value (output of shift register 4) is calculated by the subtracter 5, the 7 bit DPCM (RD) and 1 bit code (SI) showing whether the finite difference is positive or negative are obtained, and they are recorded in the disk 7 together with the outputs (RS0-RS11) of the range signal (AQ) AD converter 1 of the register 3. In this way, a stable decoding can be executed by correcting the cumulative distortion by a range code representing a level.
JP5380580A 1980-04-23 1980-04-23 Signal encoding transmission equipment Granted JPS56149844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5380580A JPS56149844A (en) 1980-04-23 1980-04-23 Signal encoding transmission equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5380580A JPS56149844A (en) 1980-04-23 1980-04-23 Signal encoding transmission equipment

Publications (2)

Publication Number Publication Date
JPS56149844A true JPS56149844A (en) 1981-11-19
JPS6359291B2 JPS6359291B2 (en) 1988-11-18

Family

ID=12953011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5380580A Granted JPS56149844A (en) 1980-04-23 1980-04-23 Signal encoding transmission equipment

Country Status (1)

Country Link
JP (1) JPS56149844A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223033A (en) * 1983-06-01 1984-12-14 Sony Corp Digital signal transmitting method
JPS6417594A (en) * 1987-07-11 1989-01-20 Futaba Denshi Kogyo Kk Remote controller

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63119993U (en) * 1987-01-28 1988-08-03

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59223033A (en) * 1983-06-01 1984-12-14 Sony Corp Digital signal transmitting method
JPH0574253B2 (en) * 1983-06-01 1993-10-18 Sony Corp
JPS6417594A (en) * 1987-07-11 1989-01-20 Futaba Denshi Kogyo Kk Remote controller
JPH0479197B2 (en) * 1987-07-11 1992-12-15 Futaba Denshi Kogyo Kk

Also Published As

Publication number Publication date
JPS6359291B2 (en) 1988-11-18

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