JPS641105A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS641105A
JPS641105A JP15548187A JP15548187A JPS641105A JP S641105 A JPS641105 A JP S641105A JP 15548187 A JP15548187 A JP 15548187A JP 15548187 A JP15548187 A JP 15548187A JP S641105 A JPS641105 A JP S641105A
Authority
JP
Japan
Prior art keywords
signal
readout
voltage
level
readout signal
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
JP15548187A
Other languages
Japanese (ja)
Other versions
JPH011105A (en
Inventor
Hiroshi Totani
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.)
Hitachi Microcomputer System Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Microcomputer Engineering 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 Hitachi Ltd, Hitachi Microcomputer Engineering Ltd filed Critical Hitachi Ltd
Priority to JP15548187A priority Critical patent/JPS641105A/en
Publication of JPH011105A publication Critical patent/JPH011105A/en
Publication of JPS641105A publication Critical patent/JPS641105A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE: To contrive to improve the signal detection rate of a readout signal by changing a level of a reference voltage in a prescribed time width depending on a position signal generated corresponding to the readout location of a readout signal.
CONSTITUTION: A preamplifier 3 amplifying a readout signal V1 by a read/write head 2, an AGC circuit 4 uniformizing the amplitude of the amplified readout signal V1, a signal generation circuit 5 comparing the uniformized readout signal V1' with a slice voltage VSL to generate a gate signal Vg, and voltage variable circuits 6, 7 varying the voltage level of the slice voltage VSL in response to the position signal Vs supplied corresponding to the tracing position of the read/write head 2 and R1WR3 are provided. Thus, the position signal is fed to the voltage variable circuit at a position where the readout signal amplitude is decreased and the slice voltage is varied into a low level, then even if the level uniforming is retarded due to the response of the AGC circuit, the gate signal is to be generated and the signal detection rate of the readout signal is improved by using the gate signal.
COPYRIGHT: (C)1989,JPO&Japio
JP15548187A 1987-06-24 1987-06-24 Signal processing circuit Pending JPS641105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15548187A JPS641105A (en) 1987-06-24 1987-06-24 Signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15548187A JPS641105A (en) 1987-06-24 1987-06-24 Signal processing circuit

Publications (2)

Publication Number Publication Date
JPH011105A JPH011105A (en) 1989-01-05
JPS641105A true JPS641105A (en) 1989-01-05

Family

ID=15606989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15548187A Pending JPS641105A (en) 1987-06-24 1987-06-24 Signal processing circuit

Country Status (1)

Country Link
JP (1) JPS641105A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0430307A (en) * 1990-05-25 1992-02-03 Fujitsu Ltd Peak detection system of magnetic disk device and recording medium format constitution system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1892527A1 (en) 2005-06-07 2008-02-27 Miura Co., Ltd. Method of preparing dioxins analytical sample

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0430307A (en) * 1990-05-25 1992-02-03 Fujitsu Ltd Peak detection system of magnetic disk device and recording medium format constitution system

Similar Documents

Publication Publication Date Title
JPS641105A (en) Signal processing circuit
JPS54128313A (en) Magnetic recorder-reproducer capable of automatic setting of proper bias amount
JPS57127988A (en) Write-in system for semiconductor storage device
JPS5517874A (en) Skew detection circuit of magnetic tape device
JPS5245310A (en) Magnetic tape device
JPS5273794A (en) Magnetic detection circuit for bank notes, etc.
JPS5381103A (en) Preventing device for false insertion of recording disk in autoplayer
JPS6430006A (en) Magnetic recording and reproducing device
JPS5280116A (en) Magnetic card device
JPS5353303A (en) Magnetic recording circuit
JPS51135512A (en) Tracking control method for magnetic recording reproduction device
JPS5380203A (en) Tape guide
JPS5235605A (en) Magnetic tape guide
JPS51112312A (en) Magnetic recording and playing apparatus
JPS5733416A (en) Automatic gain control processing system
JPS5373113A (en) Recording and reproducing apparatus
JPS54103381A (en) Battery voltage detecting circuit
JPS51135510A (en) Tracking control method for magnetic recording reproduction device
JPS5350941A (en) Quantization device
JPS5359405A (en) High-frequency bias magnetic recording ststem
JPS5377606A (en) Magnetic recorder and reproducer
JPS5665315A (en) Magnetic recording and inspecting system
JPS5226209A (en) Magnetic card record signal level detector
JPS5429621A (en) Signal reproducer
JPS51126110A (en) Non-signal part detector in information read-out device