JPS5580833A - Reading system for horogram - Google Patents

Reading system for horogram

Info

Publication number
JPS5580833A
JPS5580833A JP15591378A JP15591378A JPS5580833A JP S5580833 A JPS5580833 A JP S5580833A JP 15591378 A JP15591378 A JP 15591378A JP 15591378 A JP15591378 A JP 15591378A JP S5580833 A JPS5580833 A JP S5580833A
Authority
JP
Japan
Prior art keywords
waveform
signals
reading
decoder
rotor
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
JP15591378A
Other languages
Japanese (ja)
Inventor
Shoji Sugaya
Yoichi Morimoto
Tadashi Hikita
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP15591378A priority Critical patent/JPS5580833A/en
Publication of JPS5580833A publication Critical patent/JPS5580833A/en
Pending legal-status Critical Current

Links

Landscapes

  • Holo Graphy (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To ensure the assured reading of the data from the hologram recording medium featuring the increment of the information quantity by reading the N-bit signals in sequence through one unit of the photo sensor.
CONSTITUTION: The lighting driving is given to light source 1, and motor 63 is started to actuate data card 4 via lenses 3 and 5. Plane mirror 62 which passes through positions P1 and P2 of rotor 61 before and after the center of recording medium 41 coincides with the optical axis reflects its diffraction light to photo sensor 2. And the output signal of sensor 2 undergoes current/voltage conversion 21 to be changed into waveform (a). Waveform (a) is then turned to waveform (b) via comparator 22 to be supplied to decoder 23. On the other hand, N-units of pulses A1, A2... are supplied to decoder 23 in the forms of the decoding signals in accordance with a rotation of rotor 61, and thus the binary code is delivered. Then with the sequential shift of card 4, the information of the recorded hologram signals can be read out.
COPYRIGHT: (C)1980,JPO&Japio
JP15591378A 1978-12-15 1978-12-15 Reading system for horogram Pending JPS5580833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15591378A JPS5580833A (en) 1978-12-15 1978-12-15 Reading system for horogram

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15591378A JPS5580833A (en) 1978-12-15 1978-12-15 Reading system for horogram

Publications (1)

Publication Number Publication Date
JPS5580833A true JPS5580833A (en) 1980-06-18

Family

ID=15616242

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15591378A Pending JPS5580833A (en) 1978-12-15 1978-12-15 Reading system for horogram

Country Status (1)

Country Link
JP (1) JPS5580833A (en)

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