Synergy Computer Graphics Corporation

Cygnet Systems LLC

Dale C Frese

Paul M Hug

Paul A Yesnosky

William H Umeda

Frank R Suchomel

A sensor assembly is provided in which a balanced pair of sensors is provided by abutting two optical devices each having a light emitting diode of infrared emitting diode type (IRED) and a photosensitive transistor. By using only one IRED which is located between the photo-sensitive transistors, a substantially identical image of an object placed above the IRED is provided to simultaneously to each of the phototransistors. The sensors mounted on a printed circuit board are also aligned to windows on a surface of the sensor assembly automatically by providing projections, preferably cylindrical, on the inside walls of the sensory assembly and complementary recesses on the printed circuit board. Signals are transmitted to a multiplicity of printed circuit boards simultaneously by threading conductors through holes situated at predefined locations on each printed circuit board.

Sensor assembly for sensing printed marks on a print medium

A start of plot mark consists of three portions, a first, second and third portion each of equal area with the first and second portions being above a reference line and spaced from each other by the second portion which is below the reference line. The first and second portions are used to generate a reference signal for use in measuring the zero crossing of the output signal from the start of plot mark thereby to automatically compensate for uncertainties in the zero crossing such as those uncertainties produced by differences in intensities of the start of plot coloration versus the background coloration of the print medium, differences in reflectivity and illumination of the print medium, and imbalances between sensor output signals.

Self-referencing start of plot system and method

An information handling system for use with information containing storage discs, specifically optical discs, is disclosed herein. This system, which may be referred to as a jukebox, includes a combination drive and disc storage unit, a separate disc storage unit without a drive, and a storage disc transport unit. The combination drive and disc storage unit contains a drive assembly for writing information onto and retrieving it from the storage discs as well as shelves for individually storing specific ones of the discs. The separate disc storage unit includes only the shelves. While the storage disc transport unit contains an arrangement of robotic components for transporting specific storage discs between their storage shelves and the drive assembly pursuant to commands from an external source, specifically from a control computer forming part of the system and an outside host computer.

Growing community of inventors

San Jose, CA, United States of America

Dale C Frese