High-speed image scanning system and the method thereof

• US 20060023264A1
• Filed: 02/28/2005
• Published: 02/02/2006
• Est. Priority Date: 07/28/2004
• Status: Abandoned Application

• Current Assignee: Lite-On Technology Corporation
• Original Assignee: Lite-On Technology Corporation
• Inventors: Chung, Ho-Min
• Application Number:
  US11/067,766
• Publication Number:
  US 20060023264A1
• Time in Patent Office: Days
• US Class Current: 358/448
• CPC Class Codes: H04N 1/207 Simultaneous scanning of the original picture and the reproduced picture with a common scanning device

Abstract

A high-speed image scanning system and the corresponding method are disclosed. A high-speed photo sesnor, which can simultaneously output several sets of RGB color signals cooperates with the converter controlling unit and memory controlling unit of an ASIC so that several sets of analog/digital (A/D) converters and memories can be operated in parallel. Accordingly, an external analog image can be outputted to a processing terminal at a high speed.

Claims

1. A high-speed image scanning system for processing an analog image captured from the exterior at a high speed and outputting the processed digital image signals to a processing terminal, the high-speed image scanning system comprising:

a high-speed photo sensor, which has a plurality of (i sets) photo sensing units to simultaneously process the captured image in parallel and output correspondingly a plurality of analog signals (i sets);

an A/D converter module, which has a plurality of (j sets) A/D converters to receive and process in parallel the analog signals and to convert the analog signals into a plurality of digital signals;

a memory module, which has a plurality of (k sets) memories to receive, store, and output in parallel the digital signals; and

an application specific processing unit, which receives the digital signals for image processing and outputs a plurality of recombined image signals for the processing terminal to use, the application specific processing unit comprising;

a converter controlling unit, which connects to the A/D converter module to control how the A/D converters operate in parallel; and

a memory controlling unit, which connects to the memory module to control how the memories operate in parallel.

2. The high-speed image scanning system of claim 1, wherein the high-speed photo sensor is a contact image sensor (CIS).

3. The high-speed image scanning system of claim 1, wherein the high-speed photo sensor is a charge coupled device (CCD).

4. The high-speed image scanning system of claim 1, wherein the photo sensing units are disposed in a static array.

5. The high-speed image scanning system of claim 1, wherein the analog signal includes the RGB color signals.

6. The high-speed image scanning system of claim 1, wherein the analog signal contains one of the RGB color signals.

7. The high-speed image scanning system of claim 1, wherein the application specific processing unit contains:

a data gate, which connects to the A/D converter module to receive the digital signals from the A/D converters for image processing;

an image processing unit, which connects to the data gate to receive the digital signals for image processing;

a buffer unit, which temporarily holds data when the data gate and the image processing unit are processing the image; and

an output recombination unit, which connects to the memory controlling unit to recombine the digital signals extracted from the memories.

8. The high-speed image scanning system of claim 1, wherein the application specific processing unit contains a transmission interface in connection with an interface converter of the processing terminal for transmitting the image signal.

9. The high-speed image scanning system of claim 1, wherein the application specific processing unit is an ASIC.

10. The high-speed image scanning system of claim 1, wherein i, j, and k are equal natural numbers greater than 1.

11. The high-speed image scanning system of claim 1, wherein i, j, and k are unequal natural numbers greater than 1.

12. A high-speed image scanning method for processing an analog image captured from the exterior at a high speed and outputting the processed digital image signals to a processing terminal, the method comprising the steps of:

capturing the image using a plurality of (i sets) photo sensing units in a high-speed photo sensor and then generating a plurality of (i sets) analog signals;

using a converter controlling unit to control a plurality of (j sets) A/D converters to receive the analog signals for signal conversion;

transferring the plurality of converted digital signals outputted by the A/D converters to a data gate and an image processing unit for image processing;

using a memory controlling unit to distribute actively the digital signals to a plurality of (k sets) memories;

using the memory controlling unit to control the memories to extract the digital signals and using an output recombination unit to sort the image; and

outputting the sorted image signals to the processing terminal via a transmission interface.

13. The method of claim 12, wherein the high-speed photo sensor is a CIS.

14. The method of claim 12, wherein the high-speed photo sensor is a CCD.

15. The method of claim 12, wherein the photo sensing units are disposed in a static array.

16. The method of claim 12, wherein the analog signal includes the RGB color signals.

17. The method of claim 12, wherein the analog signal contains one of the RGB color signals.

18. The method of claim 12, wherein the processing terminal connects to the transmission interface via an interface converter to transmit the image signals.

19. The method of claim 12, wherein i, j, and k are equal natural numbers greater than 1.

20. The method of claim 12, wherein i, j, and k are unequal natural numbers greater than 1.