Scanning circuit structure
DCFirst Claim
Patent Images
1. A scanning circuit for a document scanner, comprising:
- a main circuit module capable of receiving a scanning instruction from a communication interface, converting the scanning instruction into scan control signals, passing the scan control signals to a connection cable as well as receiving a digital image data captured in a document scanning operation through the connection cable; and
an optical sensor circuit module connected to the main circuit module through the connection cable capable of receiving the scan control signals and converting the scan control signals to timing control signals that control document scanning, extraction of an analog image signal from the document and conversion of the analog image signal into the digital image data.
6 Assignments
Litigations
3 Petitions
Accused Products
Abstract
A scanning circuit having rearranged circuit modules at each end of a flat cable. After the rearrangement, the flat cable carries scanning control signals produced by a conventional IC communication interface instead of timing signals and carries digital image data instead of easily distorted and interfered analog image signals.
11 Citations
31 Claims
-
1. A scanning circuit for a document scanner, comprising:
-
a main circuit module capable of receiving a scanning instruction from a communication interface, converting the scanning instruction into scan control signals, passing the scan control signals to a connection cable as well as receiving a digital image data captured in a document scanning operation through the connection cable; and an optical sensor circuit module connected to the main circuit module through the connection cable capable of receiving the scan control signals and converting the scan control signals to timing control signals that control document scanning, extraction of an analog image signal from the document and conversion of the analog image signal into the digital image data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A scanning method, comprising:
-
receiving scan control signals at an optical sensor circuit module via a connection cable; and converting the scan control signals to timing control signals to control document scanning. - View Dependent Claims (12, 13, 14, 15, 16)
-
-
17. A scanning method, comprising:
-
extracting an analog image signal captured in a document scanning operation from a document at an optical sensor circuit module including an optical sensor; converting the analog image signal into a digital image data at said optical sensor circuit module; receiving the digital image data from said optical sensor circuit module at a main circuit module through a connection cable; and generating timing control signals that control a generation of the analog image signal and a conversion of the analog image signal into the digital image data at the optical sensor circuit module via a timing generator coupled to the optical sensor and an analog/digital converter. - View Dependent Claims (18, 19, 20)
-
-
21. A scanning apparatus, comprising:
-
means for extracting an analog image signal captured in a document scanning operation from a document at an optical sensor circuit module; means for converting the analog image signal into a digital image data at said optical sensor circuit module; means for receiving the digital image data from said optical sensor circuit module at a main circuit module through a connection cable; and means for generating timing control signals that control a generation of the analog image signal and a conversion of the analog image signal into the digital image data at the optical sensor circuit module. - View Dependent Claims (22, 23, 24, 25)
-
-
26. A scanner, comprising:
-
a scanning module, the scanning module including a main circuit module and an optical sensor circuit module; the main circuit module capable of receiving a scanning instruction from a communication interface, converting the scanning instruction into scan control signals, passing the scan control signals to a connection cable as well as receiving a digital image data captured in a document scanning operation through the connection cable; and the optical sensor circuit module connected to the main circuit module through the connection cable capable of receiving the scan control signals and converting the scan control signals to timing control signals that control document scanning, extraction of an analog image signal from the document and conversion of the analog image signal into the digital image data. - View Dependent Claims (27, 28, 29)
-
-
30. An apparatus, comprising:
-
an optical sensor circuit module capable of being connected to a main circuit module through a connection cable, wherein the optical sensor circuit module is capable of receiving scan control signals from the main circuit module and converting the scan control signals to timing control signals that control document scanning, and wherein the optical sensor circuit module is capable of extraction of an analog image signal from the document and conversion of the analog image signal into digital image data. - View Dependent Claims (31)
-
Specification