JPS57182287A - Optical character scanner - Google Patents

Optical character scanner

Info

Publication number
JPS57182287A
JPS57182287A JP56065456A JP6545681A JPS57182287A JP S57182287 A JPS57182287 A JP S57182287A JP 56065456 A JP56065456 A JP 56065456A JP 6545681 A JP6545681 A JP 6545681A JP S57182287 A JPS57182287 A JP S57182287A
Authority
JP
Japan
Prior art keywords
circuit
signal
window
envelope
binary
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
JP56065456A
Other languages
Japanese (ja)
Inventor
Yasuo Nishijima
Tetsuo Miura
Tetsuo Umeda
Hiroshi Ueda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56065456A priority Critical patent/JPS57182287A/en
Publication of JPS57182287A publication Critical patent/JPS57182287A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/10—Image acquisition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)

Abstract

PURPOSE:To read characters in a window envelope excellently by binary-coding a photoelectrically converted signal regarding an area other than a window part as usual, and also binary-coding only a photo-electrically converted signal obtained through the window in the window area. CONSTITUTION:An envelope 10 has an address entry side irradiated with light from a light source 30, and scattered light from the envelope is condensed to a scanning part 40. This scanning part 40 scans on the envelope 10 to convert characters and sumbols photoelectrically, and the resulting signal is led to a scanning signal processing part 60. A gate pulse generating circuit 63 uses the output signal of a window detecting circuit 70 to generate a gate pulse, and a gate circuit 62 receives the signal of the circuit 63 to gate the photoelectrically converted signal. On the basis of a signal obtained by the circuit 62, an AGC circuit 61 varies the amplification factor of the photo-electrically converted signal to convert the signal from the circuit 61 into two kind of video signals by a binary-coding circuit 65.
JP56065456A 1981-04-30 1981-04-30 Optical character scanner Pending JPS57182287A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56065456A JPS57182287A (en) 1981-04-30 1981-04-30 Optical character scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56065456A JPS57182287A (en) 1981-04-30 1981-04-30 Optical character scanner

Publications (1)

Publication Number Publication Date
JPS57182287A true JPS57182287A (en) 1982-11-10

Family

ID=13287649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56065456A Pending JPS57182287A (en) 1981-04-30 1981-04-30 Optical character scanner

Country Status (1)

Country Link
JP (1) JPS57182287A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125473A (en) * 1981-01-28 1982-08-04 Nec Corp Optical character scanning device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125473A (en) * 1981-01-28 1982-08-04 Nec Corp Optical character scanning device

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