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1. (WO1981000318) LECTEUR DE CODE EN BARRES PORTATIF INSTANTANE
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS :
1. A portable instant bar code reader comprising: a hand-held bar code reader unit, said hand-held bar
code reader unit having a portion thereof defining at
least in part an illumination window, a flashable illuminator disposed near said illumination window and means for producing a flash of light therethrough; said handheld bar code reader unit having a portion thereof
defining at least, in part, a light receiving window for receiving reflections of light emitted through said
illumination window; a photodiode array positioned within said hand-held bar code reader in the path of light rays reflected into and through said light receiving window;
a light gathering means positioned between said light
receiving window and said photodiode array for receiving a light pattern from said light receiving window and
focusing the same onto said photodiode array; electronic means for reading out the photodiode array; and means for producing logic signals which are indicative of the
light pattern focused onto said photodiode array.
2. A portable instant bar code reader in accor- dance with Claim 1 wherein said light receiving window is larger in at least one dimension than a label or part of a label with a bar code to be read by said reader and
wherein at least a part of said window may be positioned proximate to a bar code label being read thereby.
3. A portable instant bar code reader in
accordance with Claim 2, wherein means are provided to cause said flashable illuminator to flash when said
light receiving window is positioned proximate to a bar code label to be read by said reader.

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4. A portable instant bar code reader in accordance with Claim 1, wherein said light receiving window comprises an elongated slot having a length greater than the length of a bar code to be read 'thereby, wherein said illumination window having a slot like configuration with a length greater than the length of said bar code, said light receiving and illumination windows being located adjacent to each other or represented by the same single window and both being positionable adjacent to a bar code label being read by said reader.
5. A portable instant bar code reader in accordance with Claim 4 , wherein said light gathering means comprises a lens positioned to receive light reflected from a bar code through said light receiving window and to focus the same onto said photodiode array.
6. A portable instant bar code reader in accordance with Claim 1, wherein means are provided to automatically clear said photodiode array immediately prior to initiation of a flash from said flashable illumination.
7. A portable instant bar code reader comprising: a hand-held unit having an illumination window and a light receiving window positioned adjacent one end thereof (or being parts of the same window) ; a flash illuminating device positioned behind said illumination window; said flash illuminating device and illumination window being configured to distribute light across the surface of a bar code being read by said reader, said light receiving window being adjacent to said illumination window and being configured to receive light reflected from the surface of said bar code; a self-scanning photodiode array disposed within the reader; means for casting an image of light received through said light receiving
window onto said photodiode array; means to initiate
a flash of the flash illuminating device at a desired
read position and means for automatically reading out the photodiode array subsequent to a flash.
8. A bar code reader comprising: means for
producing a flash of light to illuminate a bar code;
means for developing an image of said bar code as a result of said flash of light; means for storing said image; and means for utilizing the read-out of the stored image to produce logic signals indicative of the bar code image.
9 , A bar code reader in accordance with Claim 8 , wherein said flash of light is initiated manually in
response to the proximity of said reader to a bar code being read.
10. A bar code reader in accordance with Claim 9 including means to channel the flash of light onto a bar code to produce a non-glare image for subsequent storing and reading out by said storing and read-out means.

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