JPS5592013A - Attenuation unit of digital signal - Google Patents

Attenuation unit of digital signal

Info

Publication number
JPS5592013A
JPS5592013A JP16570178A JP16570178A JPS5592013A JP S5592013 A JPS5592013 A JP S5592013A JP 16570178 A JP16570178 A JP 16570178A JP 16570178 A JP16570178 A JP 16570178A JP S5592013 A JPS5592013 A JP S5592013A
Authority
JP
Japan
Prior art keywords
digital signal
digital
attenuator
input
signals
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
JP16570178A
Other languages
Japanese (ja)
Inventor
Koji Matsushima
Taiji Shimeki
Nobuyoshi Kihara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP16570178A priority Critical patent/JPS5592013A/en
Publication of JPS5592013A publication Critical patent/JPS5592013A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/0054—Attenuators

Landscapes

  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To make attenuation possible without degradation of quality by comparing digital signals from an attenuator with input digital signals and by outputting a digital signal corresponding to difference between both signals. CONSTITUTION:The DC voltage from attenuator 11 is converted to a digital quantity by A/D converter 13 and is compared with input digital signals from input terminal 10 in amplitude by digital comparator 14. In case that input digital signals are larger than the digital signal from attenuator 11, the output from comparator 14 becomes 1, and a signal corresponding to difference between the digital signal and the digital signal from attenuator 11 is outputted to output terminal 17. Otherwise, in case that input digital signals are smaller than the digital signal from attenuator 11, output data of 0...0 formed inside data selector 16 is transmitted to terminal 17.
JP16570178A 1978-12-29 1978-12-29 Attenuation unit of digital signal Pending JPS5592013A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16570178A JPS5592013A (en) 1978-12-29 1978-12-29 Attenuation unit of digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16570178A JPS5592013A (en) 1978-12-29 1978-12-29 Attenuation unit of digital signal

Publications (1)

Publication Number Publication Date
JPS5592013A true JPS5592013A (en) 1980-07-12

Family

ID=15817401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16570178A Pending JPS5592013A (en) 1978-12-29 1978-12-29 Attenuation unit of digital signal

Country Status (1)

Country Link
JP (1) JPS5592013A (en)

Similar Documents

Publication Publication Date Title
JPS5592013A (en) Attenuation unit of digital signal
JPS5671374A (en) Video recording method
JPS5625827A (en) Coding unit
JPS57145500A (en) Reverberation sound adder
JPS5574279A (en) Transmission unit of digital video signal
JPS5454618A (en) Electronic musical instrument
JPS5625814A (en) Mixing unit for digital signal
JPS57106221A (en) Analogue-digital converter
JPS5739610A (en) Broadband ccd delay line
JPS54100211A (en) Active 2-4 line converter circuit
JPS5596764A (en) Half tone reproducing circuit
SU1095352A1 (en) Two-step amplifier
FI843303A (en) KOPPLING FOER ANALOG / DIGITAL-OMVANDLING AV EN FAERGTELEVISIONSSIGNAL.
ES8602315A1 (en) Apparatus for correcting frequency-dependent attenuation of the transmitting medium in signal transmission.
SU718945A1 (en) Arrangement for measuring fluctuation noise of video signal
SU1172045A1 (en) Device for generating bipulse signal
JPS5779772A (en) Fadar circuit
JPS54120571A (en) Dpcm-pcm converter
JPS55158769A (en) Insertion loss circuit for voice switch
JPS57152726A (en) A/d converting circuit
GB1489743A (en) Telecommunication system networks
JPS5731219A (en) Balance-to-unbalance converting circuit
JPS5371555A (en) Digital mixer
JPS6412732A (en) Carrier signal sending system
JPS55137731A (en) Echo suppressor