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Optical Character Recognition (Unicode block)

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Optical Character Recognition
RangeU+2440..U+245F
(32 code points)
PlaneBMP
ScriptsCommon
Symbol setsOCR controls
Assigned11 code points
Unused21 reserved code points
Unicode version history
1.0.0 (1991)11 (+11)
Unicode documentation
Code chart ∣ Web page
Note: [1][2]

Optical Character Recognition is a Unicode block containing signal characters for OCR standards.

Block

Optical Character Recognition[1][2]
Official Unicode Consortium code chart (PDF)
  0 1 2 3 4 5 6 7 8 9 A B C D E F
U+244x ⑀ ⑁ ⑂ ⑃ ⑄ ⑅ ⑆ ⑇ ⑈ ⑉ ⑊
U+245x
Notes
1.^ As of Unicode version 16.0
2.^ Grey areas indicate non-assigned code points

Subheadings

The Optical Character Recognition block has three informal subheadings (groupings) within its character collection: OCR-A, MICR, and OCR.[3]

OCR-A

The OCR-A subheading contains six characters taken from the OCR-A font described in the ISO 1073-1:1976 standard: U+2440 ⑀ OCR HOOK, U+2441 ⑁ OCR CHAIR, U+2442 ⑂ OCR FORK, U+2443 ⑃ OCR INVERTED FORK, U+2444 ⑄ OCR BELT BUCKLE, and U+2445 ⑅ OCR BOW TIE. The OCR bow tie is given the informative alias "unique asterisk".

MICR

The MICR subheading contains four characters standardized in the ISO 1004:1995 standard, from the magnetic ink character recognition E-13B font: U+2446 ⑆ OCR BRANCH BANK IDENTIFICATION, U+2447 ⑇ OCR AMOUNT OF CHECK, U+2448 ⑈ OCR DASH, and U+2449 ⑉ OCR CUSTOMER ACCOUNT NUMBER. The latter two characters are misnamed but have correct normative aliases: U+2448 ⑈ is MICR ON US SYMBOL, and U+2449 ⑉ is MICR DASH SYMBOL (the standard notes that "the Unicode character names include several misnomers"). All four characters have informative aliases: "transit", "amount", "on us", and "dash" respectively.

OCR

The OCR subheading consists of a single character: U+244A ⑊ OCR DOUBLE BACKSLASH.

History

The following Unicode-related documents record the purpose and process of defining specific characters in the Optical Character Recognition block:

Version Final code points[a] Count L2 ID WG2 ID Document
1.0.0 U+2440..244A 11 (to be determined)
L2/10-416R Moore, Lisa (2010-11-09), "Consensus 125-C39", UTC #125 / L2 #222 Minutes, Create two formal aliases, U+2448 MICR ON US SYMBOL and U+2449 MICR DASH SYMBOL for Unicode 6.1.
N4103 "T.3. Optical Character Recognition", Unconfirmed minutes of WG 2 meeting 58, 2012-01-03
  1. ^ Proposed code points and characters names may differ from final code points and names

References

  1. ^ "Unicode character database". The Unicode Standard. Retrieved 2016-07-09.
  2. ^ "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2016-07-09.
  3. ^ "Unicode Code Charts: Optical Character Recognition" (PDF). The Unicode Standard, Version 6.3. Retrieved 27 February 2014.
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