JPS6489031A - Information processor - Google Patents

Information processor

Info

Publication number
JPS6489031A
JPS6489031A JP24609587A JP24609587A JPS6489031A JP S6489031 A JPS6489031 A JP S6489031A JP 24609587 A JP24609587 A JP 24609587A JP 24609587 A JP24609587 A JP 24609587A JP S6489031 A JPS6489031 A JP S6489031A
Authority
JP
Japan
Prior art keywords
detected
digital data
converted
subtracting
constitution
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
JP24609587A
Other languages
Japanese (ja)
Inventor
Mikio Yamamuro
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP24609587A priority Critical patent/JPS6489031A/en
Priority to US07/249,928 priority patent/US4942563A/en
Priority to DE3833330A priority patent/DE3833330C2/en
Priority to KR1019880012755A priority patent/KR910006081B1/en
Publication of JPS6489031A publication Critical patent/JPS6489031A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To execute a stable and correct control with an easy constitution by driving a converging means according to digital data converted by means of a converting means. CONSTITUTION:A light emitted from a light source 14 is focused on a recording medium 1 by using a converging means 10, first and second signals are detected from the light from the recording medium 1, the detected first and second detecting signals are added, and thereby, an incident light quantity is detected. The first and second detecting signals are subtracted by a subtracting means 22, the detection result of the incident light quantity is made into a referring voltage, and a subtracting signal from the subtracting means 22 is converted to the digital data by means of a converting gain corresponding to the referring voltage. Further, according to the converted digital data, the converging means 10 is driven. Thus, the converging means 10, the stable and correct control can be executed with the simple constitution.
JP24609587A 1987-09-30 1987-09-30 Information processor Pending JPS6489031A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP24609587A JPS6489031A (en) 1987-09-30 1987-09-30 Information processor
US07/249,928 US4942563A (en) 1987-09-30 1988-09-27 Signal processing apparatus and method capable of providing precise digital data
DE3833330A DE3833330C2 (en) 1987-09-30 1988-09-30 Device for detecting a light beam from an optical memory
KR1019880012755A KR910006081B1 (en) 1987-09-30 1988-09-30 Optical disk player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24609587A JPS6489031A (en) 1987-09-30 1987-09-30 Information processor

Publications (1)

Publication Number Publication Date
JPS6489031A true JPS6489031A (en) 1989-04-03

Family

ID=17143414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24609587A Pending JPS6489031A (en) 1987-09-30 1987-09-30 Information processor

Country Status (1)

Country Link
JP (1) JPS6489031A (en)

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