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Class Information
Number: 250/568
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Including coded record > Digital information
Description: Subject matter where the date consist of discrete identical indicia and is represented by the relative positional locations of the indicia on the record.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6891182 |
Apparatus for automatically detecting size to be detected and automatic analyzer using the same |
May. 10, 2005 |
| 6849860 |
Detection system and a detection method |
Feb. 1, 2005 |
| 6774374 |
Isolation mounts for use with vacuum chambers and their application in lithographic projection apparatuses |
Aug. 10, 2004 |
| 6618132 |
Miniature laser tracker |
Sep. 9, 2003 |
| RE37925 |
High speed imaging apparatus for CCD based scanners |
Dec. 10, 2002 |
| 6465787 |
Covert surveillance system for tracking light sensitive tagged moving vehicles |
Oct. 15, 2002 |
| 6410931 |
Electro-optical reader with hands-free and hand-held modes of operation |
Jun. 25, 2002 |
| 6225641 |
Optical reader for scanning optical indicia by movement of an aperture relative to an image plane |
May. 1, 2001 |
| 6177683 |
Portable viewer for invisible bar codes |
Jan. 23, 2001 |
| 6073851 |
Multi-focus optical reader with masked or apodized lens |
Jun. 13, 2000 |
| 6060722 |
Optical reader having illumination assembly including improved aiming pattern generator |
May. 9, 2000 |
| 6042012 |
Method and apparatus for reading images without need for self-generated illumination source |
Mar. 28, 2000 |
| 6021946 |
Self-focusing bar code reader and optical receiving system |
Feb. 8, 2000 |
| 6017125 |
Bar coded retroreflective target |
Jan. 25, 2000 |
| 5991102 |
Beam protecting device |
Nov. 23, 1999 |
| 5969323 |
Noise-reduced electro-optical readers with optical bandpass filter |
Oct. 19, 1999 |
| 5945670 |
Optical system for data reading having large depth of field |
Aug. 31, 1999 |
| 5814802 |
High speed imaging apparatus for CCD based scanners |
Sep. 29, 1998 |
| 5814803 |
Image reader with multi-focus lens |
Sep. 29, 1998 |
| 5777311 |
Optoelectronic a device employing a digital filter which operates in different coefficient sets |
Jul. 7, 1998 |
| 5770847 |
Bar code reader with multi-focus lens |
Jun. 23, 1998 |
| 5744790 |
Split optics focusing apparatus for CCD-based bar code scanner |
Apr. 28, 1998 |
| 5717221 |
Multiple laser indicia reader optionally utilizing a charge coupled device (CCD) detector and operating method therefor |
Feb. 10, 1998 |
| 5696370 |
Bar code scanning system for automatically calculating the optical power output levels of the light source |
Dec. 9, 1997 |
| 5693929 |
Scanning module with spring made resistant to overflexing |
Dec. 2, 1997 |
| 5691534 |
Digital signal ouput device having a transparent gear wheel |
Nov. 25, 1997 |
| 5641958 |
Optical system for data reading having wide range of focus |
Jun. 24, 1997 |
| 5598007 |
Symbology reader with fixed focus spotter beam |
Jan. 28, 1997 |
| 5585616 |
Camera for capturing and decoding machine-readable matrix symbol images applied to reflective surfaces |
Dec. 17, 1996 |
| 5576531 |
Hand held bar code scanning device having a manually operated optical trigger switch |
Nov. 19, 1996 |
| 5541397 |
Hand held bar code scanning device having a manually operated optical trigger switch |
Jul. 30, 1996 |
| 5541419 |
Symbology reader wth reduced specular reflection |
Jul. 30, 1996 |
| 5507527 |
Two dimensional code for processing data |
Apr. 16, 1996 |
| 5506411 |
Optical reader with improved response to change in reflected signal |
Apr. 9, 1996 |
| 5498868 |
Optical data reader capable of quickly changing a condensing position of a light beam |
Mar. 12, 1996 |
| 5491346 |
Anamorphic lens system for a hand-held symbology reader |
Feb. 13, 1996 |
| 5479026 |
System having optically encoded information |
Dec. 26, 1995 |
| 5479164 |
Photonic data compression system and method |
Dec. 26, 1995 |
| 5479011 |
Variable focus optical system for data reading |
Dec. 26, 1995 |
| 5404009 |
Integrated optical information detector for an optical information processing apparatus with a plurality of photo detecting strips and a common bonding pad |
Apr. 4, 1995 |
| 5376780 |
Method of and arrangement for reading a bar code on photographic material |
Dec. 27, 1994 |
| 5347121 |
Variable focus optical system for data reading |
Sep. 13, 1994 |
| 5345089 |
System and method for optical scanner sensitivity adjustment |
Sep. 6, 1994 |
| 5332892 |
Optical systems for bar code scanners |
Jul. 26, 1994 |
| 5321436 |
Franking machine with means for checking operation of printing elements |
Jun. 14, 1994 |
| 5317166 |
A system for decoding bar coded labels upon different size containers |
May. 31, 1994 |
| 5298728 |
Signal processing apparatus and method |
Mar. 29, 1994 |
| 5291028 |
Optical device for sensing marks on a surface using green light impinging at least sixty-five degrees to the normal |
Mar. 1, 1994 |
| 5260554 |
System for automatically reading symbols, such as bar codes, on objects which are placed in the detection zone of a symbol reading unit, such as a bar code scanner |
Nov. 9, 1993 |
| 5237161 |
System for automatically reading symbols, such as bar codes, on objects which are placed in the detection zone of a symbol reading unit, such as a bar code scanner |
Aug. 17, 1993 |
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