1
Alex Roustaei: Optical scanning head. Brown Martin Haller & McClain, October 11, 1994: US05354977 (379 worldwide citation)

The optical scanning head for scanning one- and two-dimensional bar codes includes at least one combination of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. The combination and arrangement of the LEDs depends on whether one- or two-dimensional ba ...


2
Alex Roustaei: Optical scanning head. Brown Martin Haller & McClain, July 2, 1996: US05532467 (271 worldwide citation)

The optical scanning head includes at least one trio of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. An optical module includes a light shield or "dark room" and a lens/filter assembly which provides control of the depth of focus of the scanner. ...


3
Alex Roustaei: Optical scanning head. Brown Martin Haller & McClain, September 20, 1994: US05349172 (252 worldwide citation)

The optical scanning head includes at least one trio of light emitting diodes arranged so the LEDs emit light at different angles to create a fan of light. An optical module includes a light shield or "dark room" and a lens/filter assembly which provides control of the depth of focus of the scanner. ...


4
Alex Roustaei, Wenji Xia, Dennis G Priddy: Apparatus and method for decoding damaged optical codes. Symagery Microsystems, Katten Muchin Zavis Rosenman, February 3, 2004: US06685095 (222 worldwide citation)

An improved optical code reading system and method that enhances the ability of a reader to locate a symbol within a field of view and enhances the error-correcting properties of the encoding scheme commonly used in 2D bar codes. The reader offsets the effects of damaged finder patterns and missing ...


5
John Scott Thomas, Alex Roustaei, Paul Vulpoiu: Ambient light detection technique for an imaging array. Symagery Microsystems, Pearne & Gordon, October 22, 2002: US06469289 (153 worldwide citation)

This invention is directed to a method and apparatus for determining the level of ambient light impinging on a selected number of pixels in an imaging array where each pixel includes a photodiode. The ambient light may be determined by resetting the pixels in the array and by detecting current flow ...


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Alex Roustaei, William Farmilo, Michael McLean: Image capture and processing accessory. Pearne & Gordon, October 25, 2001: US20010034222-A1

An imager for capturing and processing images for a variety of applications which may be connected to a transceiver such as a cell phone, a personal digital assistant or an internet appliance for transmitting the images over a limited bandwidth network, is described. The imaging applications include ...


8
Alex Roustaei, Kevin Xiao, Wenji Xia: Apparatus and method for global and local feature extraction from digital images. Morrison & Foerster, April 18, 2002: US20020044689-A1

An optical imaging device and method which utilizes global feature extraction and local feature extraction to locate, identify and decode optical codes found within a captured image is disclosed. A global feature extraction unit first processes low-resolution image data to locate regions of interest ...


9
Alex Roustaei, Wenji Xia, Dennis G Priddy: Apparatus and method for decoding damaged optical codes. Morrison & Foerster, April 11, 2002: US20020041712-A1

An improved optical code reading system and method that enhances the ability of a reader to locate a symbol within a field of view and enhances the error-correcting properties of the encoding scheme commonly used in 2D bar codes. The reader offsets the effects of damaged finder patterns and missing ...


10
Alex Roustaei: Method and apparatus for controlling power consumption in an active pixel sensor array. Pearne & Gordon, January 16, 2003: US20030011695-A1

The invention is directed to a method and apparatus of controlling power consumption in a CMOS active pixel sensor (APS) transducer array, which has a number of APS's arranged in columns and rows and connected to a power supply, for providing output signals representing an image and wherein the outp ...