JPS55134478A - Waveform memory unit - Google Patents

Waveform memory unit

Info

Publication number
JPS55134478A
JPS55134478A JP4215479A JP4215479A JPS55134478A JP S55134478 A JPS55134478 A JP S55134478A JP 4215479 A JP4215479 A JP 4215479A JP 4215479 A JP4215479 A JP 4215479A JP S55134478 A JPS55134478 A JP S55134478A
Authority
JP
Japan
Prior art keywords
register
change components
converter
memory
cpu2
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
JP4215479A
Other languages
Japanese (ja)
Inventor
Yukio Tamada
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.)
ROORAND KK
Roland Corp
Original Assignee
ROORAND KK
Roland 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 ROORAND KK, Roland Corp filed Critical ROORAND KK
Priority to JP4215479A priority Critical patent/JPS55134478A/en
Publication of JPS55134478A publication Critical patent/JPS55134478A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To reduce the number of bits per one word of a memory and improve response, by storing change components of an input signal so that their range may be changed in respect to exponential function.
CONSTITUTION: An inputted signal is subjected to A/D conversion by A/D converter 1 to become a digital value and is given to CPU2. In CPU2, A register 21 stores temporarily total sum V'n of coded change components, and B register 22 stores temporarily input voltage Vn converted to the digital value by converter 1. C register 23 stores the difference between the output of converter 1 and total sum V'n of coded change components, and D register 24 designates addresses of ROM31 and ROM32, and the address of waveform storage memory 41 is designated by E register 25. Thus, change components of the input signal are so stored that their range may be changed in respect to exponential function, so that the number of bits per one word of the memory can be reduced to improve response.
COPYRIGHT: (C)1980,JPO&Japio
JP4215479A 1979-04-06 1979-04-06 Waveform memory unit Pending JPS55134478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4215479A JPS55134478A (en) 1979-04-06 1979-04-06 Waveform memory unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4215479A JPS55134478A (en) 1979-04-06 1979-04-06 Waveform memory unit

Publications (1)

Publication Number Publication Date
JPS55134478A true JPS55134478A (en) 1980-10-20

Family

ID=12628015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4215479A Pending JPS55134478A (en) 1979-04-06 1979-04-06 Waveform memory unit

Country Status (1)

Country Link
JP (1) JPS55134478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57141100A (en) * 1981-02-26 1982-09-01 Toshiba Corp Method for signal recording

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49135566A (en) * 1973-04-28 1974-12-27
JPS5346209A (en) * 1976-10-08 1978-04-25 Matsushita Electric Ind Co Ltd Sectional dpcm system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49135566A (en) * 1973-04-28 1974-12-27
JPS5346209A (en) * 1976-10-08 1978-04-25 Matsushita Electric Ind Co Ltd Sectional dpcm system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57141100A (en) * 1981-02-26 1982-09-01 Toshiba Corp Method for signal recording

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