Synchronization protocol

a synchronization protocol and image sensor technology, applied in the field of monolithic integrated circuits, can solve the problems the link between the image sensor and the host processor must support the relatively high read-out data rate of the image sensor, etc., and achieve the effect of reducing the potential dynamic range of the pixel cell

Inactive Publication Date: 2005-03-03
SILVERBROOK RES PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution enhances the dynamic range of the image sensor by minimizing voltage drops and improving data processing efficiency, allowing for high-speed, low-cost machine vision applications without adding complex circuitry.

Problems solved by technology

One of the issues that arises when such image sensors are used in systems with a host processor is that the link between the image sensor and the host processor must support the relatively high read-out data rate of the image sensor.
This reduces the potential dynamic range of the pixel cell.

Method used

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Embodiment Construction

The detailed description is broken down into sections for convenience.

Section A describes a preferred embodiment of the present invention in the form of the Jupiter image sensor chip with on-board image processing.

Section B describes the functions of the Ganymede image sensor component of Jupiter.

Section C describes the design of the Ganymede image sensor.

Section D describes the design of an 8-bit analog-to-digital converter (ADC) used by Ganymede.

Section E describes the functions and design of the Callisto image processor component of Jupiter.

Section F describes alternative filtering and subsampling circuits which may be utilised by Callisto.

Section G describes netpage tag sensing algorithms adapted to utilise the Callisto image processor for tag image processing and tag decoding in the context of the netpage networked computer system outlined in the cross-referenced patent applications listed above.

In a preferred embodiment of the invention, the Jupiter image sens...

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Abstract

A monolithic integrated circuit for use in a system having a host processor, the integrated circuit including at least one input pin for receiving command data from the host processor; at least one output pin for transmitting processed image data to the host processor in response to the command data; and an image processor configured to generate the processed image data by performing an image-processing function on image data captured by an image sensor.

Description

FIELD OF THE INVENTION The present invention relates to the field of monolithic integrated circuits, and, more particularly, to image capture and image processing. The invention has been developed for use in a hand-held stylus configured to capture coded data disposed on a substrate, and will be described hereinafter with reference to that application. However, it will be appreciated that the invention can be applied to other devices. GLOSSARY This section lists the acronyms, abbreviations and similar information used in this specification. BIST: Built-in self test DNL: Differential non-linearity ESD: Electro-static discharge FPN: Fixed pattern noise INL: Integral non-linearity PGA: Programmable gain amplifier PVT: Process-Voltage-Temperature BACKGROUND OF INVENTION Monolithic integrated circuit image sensors are known in the art. Examples include Charge-Coupled Devices (CCDs) and CMOS image sensors. Refer, for example, to Janesick, J. R., Scientific Charge-Coupled Device...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H04N3/15H04N25/00
CPCH04N5/378H04N5/3559H04N25/59H04N25/78H04N25/76H04N25/7795H04N25/75
InventorLAPSTUN, PAULYOURLO, ZHENYA ALEXANDERHENDERSON, PETER CHARLES BOYDMOINI, ALIREZAUNDERWOOD, MATTHEW JOHNRIDLEY, NICHOLAS DAMONSILVERBROOK, KIA
OwnerSILVERBROOK RES PTY LTD