Device applied to scaling factor of horizontal scan of a scanner and method thereof
AssigneeWinbond Electronics Corp.
InventorChung-Chih Chang
Life of this patent
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Abstract
The present invention relates to a device applied to scaling factor of horizontal scan of a scanner and a method thereof. The present invention lets signals be processed by a multiplexer, a shifter, and an adder to achieve the above function, or lets signals be processed by a plurality of shifters and a plurality of adders to achieve the above function. Because a divider or a ROM occupying a too large area in the prior art is not required, the present invention can effectively reduce the occupied area, increase the scanning speed, and enhance the image quality of a scanner.
Claims15
A device applied to scaling factor of horizontal scan of a scanner, comprising mainly:
- an input conducting wire situated at the foremost end of a scanner and used as an input end of signal;
- an addition device connected to said input conducting wire;
- a shifting device with one end thereof connected to said input conducting wire and the other end thereof connected to said addition device;
- and
- a shifter with one end thereof connected to said addition device and the other end thereof connected to an output conducting wire.
A method applied to scaling factor of horizontal scan of a scanner, comprising mainly the steps of:
- transferring an input signal to an addition device and a shifting device, right-shifting said input signal n bits and then transferring to said addition device by said shifting device;
- adding said input signal and an output signal of said shifting device by said addition device;
- and
- right-shifting an output signal of said addition signal 2 bits and then outputting the result by said shifting device.
A device applied to scaling factor of horizontal scan of a scanner, comprising mainly:
- an input conducting wire situated at the foremost end of a scanner and used as an input end of signal;
- at least an adder connected to said input conducting wire;
- at least a shifter with one end thereof connected to said input conducting wire and the other end thereof connected to said adder;
- and
- a end shifter with one end thereof connected to said adder and the other end thereof connected to an output conducting wire.
Dependencies are inferred from the claim text.