JPS5492155A - Retrieval device - Google Patents
Retrieval deviceInfo
- Publication number
- JPS5492155A JPS5492155A JP16046877A JP16046877A JPS5492155A JP S5492155 A JPS5492155 A JP S5492155A JP 16046877 A JP16046877 A JP 16046877A JP 16046877 A JP16046877 A JP 16046877A JP S5492155 A JPS5492155 A JP S5492155A
- Authority
- JP
- Japan
- Prior art keywords
- unit
- moving amount
- address
- inputted
- information
- 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
Links
Landscapes
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Moving Of Head For Track Selection And Changing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
PURPOSE: To retrieve desirable information at a high speed with high precision from information recorded at high density, by detecting a relative moving amount between a recording disk and pickup and its direction and by performing the arithmetic process of the moving amount and the address on the recording track on the disk.
CONSTITUTION: Picture information recorded on recording disk 3 is detected by pickup unit 4 with reflected light of beam 2 from light source 1 such as a laser, and unit 4 generates a pulse equivalent to the moving amount relative to disc 3. The output of unit 4 is inputted to movement detection circuit 11 which detects the moving amount and direction and address reader 13 which reads out the address of information under regeneration. The address of the desirable information is inputted to input unit 12 and output signal A of unit 12 and the output of unit 13 are processed by arithmetic unit 14 to obtain a preset value, which is inputted to up-down counter 15. The value counted from signals relating the moving amount and the direction from circuit 11 and the preset value in counter 15 is D/A-converted 16 and pickup driving element 18 is driven to retrieve the desirable information.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52160468A JPS6048055B2 (en) | 1977-12-29 | 1977-12-29 | search device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52160468A JPS6048055B2 (en) | 1977-12-29 | 1977-12-29 | search device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16219384A Division JPS60121535A (en) | 1984-07-31 | 1984-07-31 | Detector for track crossing direction or shift amount of light beam |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5492155A true JPS5492155A (en) | 1979-07-21 |
JPS6048055B2 JPS6048055B2 (en) | 1985-10-25 |
Family
ID=15715590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52160468A Expired JPS6048055B2 (en) | 1977-12-29 | 1977-12-29 | search device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6048055B2 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56124168A (en) * | 1980-03-04 | 1981-09-29 | Matsushita Electric Ind Co Ltd | Device for reproducing information |
JPS57147168A (en) * | 1981-03-05 | 1982-09-10 | Matsushita Electric Ind Co Ltd | Jumping scanner |
JPS581853A (en) * | 1981-06-26 | 1983-01-07 | Hitachi Ltd | Position detector for pickup head |
JPS5877037A (en) * | 1981-10-30 | 1983-05-10 | Hitachi Ltd | Recorder and reproducer of optical information |
JPS5891536A (en) * | 1981-11-25 | 1983-05-31 | Hitachi Ltd | Accessing system of digital optical disk |
JPS58137168A (en) * | 1982-02-10 | 1983-08-15 | Hitachi Ltd | Disk device |
JPS5948870A (en) * | 1982-09-10 | 1984-03-21 | Hitachi Ltd | Random access device of video disk player |
JPS6139239A (en) * | 1984-07-28 | 1986-02-25 | Sony Corp | Optical disc player |
JPS61196431A (en) * | 1985-02-25 | 1986-08-30 | Sony Corp | Optical disk player |
US5048001A (en) * | 1989-04-07 | 1991-09-10 | Matsushita Electric Industrial Co., Ltd. | Load correction method for an information retrieval apparatus |
US5109366A (en) * | 1988-04-14 | 1992-04-28 | Matsushita Electric Industrial Co., Ltd. | Slip-off preventing tracking control apparatus |
JPH09134531A (en) * | 1996-10-16 | 1997-05-20 | Hitachi Ltd | Information memory apparatus |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5110701A (en) * | 1974-07-16 | 1976-01-28 | Mitsumi Electric Co Ltd | Dochokairo |
JPS5117410A (en) * | 1974-08-05 | 1976-02-12 | Mansei Kogyo Kk | YOMITORISOCHI |
JPS5132217A (en) * | 1974-09-13 | 1976-03-18 | Teac Corp | |
JPS51117005A (en) * | 1975-04-07 | 1976-10-14 | Hitachi Ltd | Tracking absorption equipment |
JPS5215340A (en) * | 1975-07-25 | 1977-02-04 | Canon Inc | Image read method and equipment |
JPS52152704A (en) * | 1976-04-23 | 1977-12-19 | Thomson Brandt | Optical data disk reader |
-
1977
- 1977-12-29 JP JP52160468A patent/JPS6048055B2/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5110701A (en) * | 1974-07-16 | 1976-01-28 | Mitsumi Electric Co Ltd | Dochokairo |
JPS5117410A (en) * | 1974-08-05 | 1976-02-12 | Mansei Kogyo Kk | YOMITORISOCHI |
JPS5132217A (en) * | 1974-09-13 | 1976-03-18 | Teac Corp | |
JPS51117005A (en) * | 1975-04-07 | 1976-10-14 | Hitachi Ltd | Tracking absorption equipment |
JPS5215340A (en) * | 1975-07-25 | 1977-02-04 | Canon Inc | Image read method and equipment |
JPS52152704A (en) * | 1976-04-23 | 1977-12-19 | Thomson Brandt | Optical data disk reader |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6231428B2 (en) * | 1980-03-04 | 1987-07-08 | Matsushita Electric Ind Co Ltd | |
JPS56124168A (en) * | 1980-03-04 | 1981-09-29 | Matsushita Electric Ind Co Ltd | Device for reproducing information |
JPS57147168A (en) * | 1981-03-05 | 1982-09-10 | Matsushita Electric Ind Co Ltd | Jumping scanner |
JPH039554B2 (en) * | 1981-03-05 | 1991-02-08 | Matsushita Electric Ind Co Ltd | |
JPS581853A (en) * | 1981-06-26 | 1983-01-07 | Hitachi Ltd | Position detector for pickup head |
JPS5877037A (en) * | 1981-10-30 | 1983-05-10 | Hitachi Ltd | Recorder and reproducer of optical information |
JPS5891536A (en) * | 1981-11-25 | 1983-05-31 | Hitachi Ltd | Accessing system of digital optical disk |
JPH0551973B2 (en) * | 1981-11-25 | 1993-08-04 | Hitachi Ltd | |
JPS58137168A (en) * | 1982-02-10 | 1983-08-15 | Hitachi Ltd | Disk device |
JPS5948870A (en) * | 1982-09-10 | 1984-03-21 | Hitachi Ltd | Random access device of video disk player |
JPS6139239A (en) * | 1984-07-28 | 1986-02-25 | Sony Corp | Optical disc player |
JPS61196431A (en) * | 1985-02-25 | 1986-08-30 | Sony Corp | Optical disk player |
US5109366A (en) * | 1988-04-14 | 1992-04-28 | Matsushita Electric Industrial Co., Ltd. | Slip-off preventing tracking control apparatus |
US5048001A (en) * | 1989-04-07 | 1991-09-10 | Matsushita Electric Industrial Co., Ltd. | Load correction method for an information retrieval apparatus |
JPH09134531A (en) * | 1996-10-16 | 1997-05-20 | Hitachi Ltd | Information memory apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6048055B2 (en) | 1985-10-25 |
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