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Device and modes for outputting image bits in scanner

A technology of output device and output method, which is applied in the direction of image communication, electrical components, etc., can solve the problem of inability to eliminate the influence of original data of digital image data, inability to include information of overflow bits in bright parts, and inability to provide the most optimal output for back-end signal processors. best compensation

Inactive Publication Date: 2004-05-26
UMAX DATA SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The digital image data output by known image bits does not contain overflow bits, so even if it is output with 16 bits, it still cannot contain the information of overflow bits in bright parts
[0008] (2) The digital image data output by known image bits does not contain overflow bits, so it cannot provide the best compensation for the post-stage signal processor
[0009] (3) In the image bit output device and mode in the known scanner, it is impossible to eliminate the influence of the digital image data on the original data after compensation
[0010] (4) In the known image bit output device and mode, the user cannot decide the mode of output

Method used

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  • Device and modes for outputting image bits in scanner
  • Device and modes for outputting image bits in scanner
  • Device and modes for outputting image bits in scanner

Examples

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no. 1 example

[0029] figure 2 It shows an image bit output device in a scanner according to a preferred embodiment of the present invention, the output device includes: the analog / digital converter 20 receives the analog image data sent after scanning the document, and converts it into digital image data After output. The digital signal processor 22 is coupled to the analog / digital converter 20 and outputs N-bit digital image data after compensating the digital image data. Finally, the bit selector 24 is coupled to the digital signal processor 22, and outputs the selected digital image data after selecting the output bit range of the N-bit digital image data.

[0030] Wherein, the digital image data output by the analog / digital converter 20 is 16 bits, and the N-bit digital image data contains overflow bits.

[0031] Furthermore, the selected digital image data is 16 consecutive bits in the N-bit digital image data and the selected digital image data is bb j ~b j-15 , where b j Repres...

no. 2 example

[0034] Please refer to image 3 , which depicts a flow chart of image bit output mode in a scanner according to a preferred embodiment of the present invention, the output mode flow process is as follows:

[0035] s102. The simulated image data is transmitted after scanning the document.

[0036] s104. Convert the analog image data into digital image data.

[0037] s106. After the digital image data is compensated, output N-bit digital image data.

[0038] s108. After selecting a bit range for outputting the N-bit digital image data, output the selected digital image data with M bits.

[0039] Wherein, the selected digital image data is the bth in the N-bit digital image data j ~b j-M-1 Ones, b j It represents the jth bit in the N-bit digital image data; and the selected digital image data is M consecutive bits in the N-bit digital image data.

[0040] Among them, the digital image data is 16 bits, and the N-bit digital image data contains overflow bits.

[0041] In yet...

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Abstract

Device of outputting image bits includes A / D converter, digital signal processor and digit selector. Digital image data output from A / D converter in the output device are compensated by digital signal processor to make digital image data contain bit position of 'overflow'. Then, bit range of the output digital image compensated is selected. Bit mode for outputting image from scanner provides original digital image data or digital image data containing bit position of 'overflow' for users in order to provide more correct original digital image data for posterior processor.

Description

technical field [0001] The present invention relates to an image bit output device and method, and in particular to an image bit output device and method in a scanner. Background technique [0002] figure 1 A known image bit output device in a scanner is shown. The known output devices include: an analog / digital converter 10 and a digital signal processor 12 . The analog / digital converter 10 converts analog image data into digital image data. The digital signal processor 12 is coupled to the analog / digital converter 10 , and outputs the received digital image data after compensation. [0003] When the analog / digital converter 10 receives the analog image data transmitted after scanning the document, it converts the analog image data into digital image data and outputs it, and the digital signal processor 12 compensates the digital image data, and then outputs the compensated image data digital image data. [0004] Wherein, the digital image data output by the digital si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/00H04N1/40
Inventor 陈世煌
Owner UMAX DATA SYST