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US 7,405,848 B2Granted
Scanning device and method using paired differential analog signals
AssigneeTranspacific IP, Ltd.
InventorsChen-Hsiang Shih, Chen-Ho Lee
Life of this patent
Estimating the term…
Abstract
A scanning device having a cable for connecting various parts is provided. A method is provided using a differential pair of clock generated signals to cancel each other, thereby reducing electromagnetic emissions. The differential pair is characterized by each being in phase with the other with regard to frequency, and each being the reverse of the other in amplitude.
Claims19
A scanning device having a differential analog transmission pair, the scanning device comprising:
- an image capture component board, including:
- an image capture component for receiving data in the form of optic signals, and transforming the optic signals into analog electric signals;
- and
- a differential output driver coupled to the image capture component for transforming the analog electric signals into differential mode and outputting a differential analog electric signal;
- and
- a main board coupled to the image capture component board, including:
- a differential input receiver for receiving the differential analog electric signal, and restoring the differential analog electric signal back to the analog electric signals.
4 more elements
A method for using a differential pair in a scanner, the method comprising:
- receiving an optic signal representing scanned data, and transforming the optic signal into analog electric signals;
- transforming the analog electric signals into differential analog electric signals;
- and
- receiving the differential analog electric signals, and restoring the differential analog electric signals back into analog electric signals.
1 more element
An apparatus comprising:
- means for receiving an optic signal representing scanned data, and transforming the optic signal into analog electric signals;
- means for transforming the analog electric signals into differential analog electric signals;
- and
- means for receiving the differential analog electric signals, and restoring the differential analog electric signals back into analog electric signals.
1 more element
Dependencies are inferred from the claim text.