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US 2002/0154346 A1Published application
Scanning head module
AssigneeUmax Data Sytems Inc.
InventorChui-Kuei Chiu
Life of this patent
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Abstract
A scanning head module is provided. A photosensitive detector and a processing circuit are integrated in one module and installed on a main board so that a signal transmission line and a driving device for driving the processing circuit between the photosensitive detector and the processing circuit could be removed. Thus, the electrical magnetic interference (EMI) of the output signal of the photosensitive detector is significantly eliminated. The shielding of the scanning module for preventing electrical magnetic interference is also simplified.
Claims40
A scanning head module, comprising:
- a light source;
- and
- a housing comprising an optical system and a main board;
- wherein
- said light source illuminating a document to be scanned;
- said optical system including a set of mirrors and a lens assembly;
- said main board including a photosensitive detector and a processing circuit, wherein the illumination light from the document is guided by said set of mirrors and focused by said lens assembly onto said photosensitive detector, and said processing circuit processes the signal received from said photosensitive detector.
4 more elements
A scanning head module, comprising:
- a light source;
- and
- a housing comprising an optical system and a main board;
- wherein
- said light source illuminating a document to be scanned;
- said optical system including a set of mirrors and a lens assembly;
- said main board including a photosensitive detector, a processing circuit, a memory and an interface control circuit, wherein the illumination light from the document is guided by said set of mirrors and focused by said lens assembly onto said photosensitive detector, and said processing circuit processes the signal received from said photosensitive detector, while said memory accesses the information of said processing circuit, and said interface control circuit outputs the information of said processing circuit to a host through an interface.
4 more elements
Dependencies are inferred from the claim text.