Patents by Inventor Kuo-Jeng Wang

Kuo-Jeng Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030185458
    Abstract: A method of automatically adjusting sharpening weighting value in an image sharpening process is disclosed. The method utilizes scanning a correction board having a black reference region, a white reference region and a plurality of line pair regions to aid the calculations of the modulation transfer function value and noise value. The method automatically adjusts weighting values of a sharpening function and avoids accompanying noise increase simultaneously in an image sharpening process performed in an image processing apparatus and thereby high quality images with high signal/noise ratio can be provided.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 2, 2003
    Inventor: Kuo-Jeng Wang
  • Publication number: 20030188048
    Abstract: An image compensation method of an image scanner is disclosed. The method can automatically select either a host or the image scanner to execute image compensation according to the transfer speed between the host and the image scanner.
    Type: Application
    Filed: March 26, 2002
    Publication date: October 2, 2003
    Inventors: Chun-Jen Chen, Kuo-Jeng Wang
  • Patent number: 6608301
    Abstract: A single step multi-section exposure scanning method for a scanner. The scanner includes a photo-sensor and a stepper motor. The photo-sensor has N rows of sensor cells that correspond to each primary color. The scanning device is driven forward an exposure distance for each revolution of the stepper motor. The single step multi-section exposure scanning method includes the following steps. First, the photo-sensor moves forward one exposure distance. One row of sensor cells is exposed after moving every 1/Nth of the exposure distance. Thereafter, analogue voltages obtained through the exposed row of sensor cells are transmitted to an analogue/digital converter. The above process is repeated until the entire document is scanned.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: August 19, 2003
    Assignee: Umax Data Systems, Inc.
    Inventors: Rong-Ji Liu, Kuo-Jeng Wang, Tom-Chin Chang
  • Publication number: 20030147106
    Abstract: An image data sequencing method for a memory unit inside an optical scanning device. The image data sequencing method is particularly suitable for scanning a line of pixels with each pixel comprising a plurality of primary colors. The image data sequencing method involves scanning a line of pixels to obtain the data for a primary or secondary color. The pixels within the scan line are subdivided into groups. A storage space is reserved both before and after the address space inside the memory unit for holding the scanned primary or secondary color data so that all the primary or secondary color data constituting a pixel are in a fixed sequence next to each other inside the memory unit. When all the primary or secondary color data of pixels within a group are secured, the group of data is released from the memory unit.
    Type: Application
    Filed: February 6, 2002
    Publication date: August 7, 2003
    Inventors: Tom-Chin Chang, Kuo-Jeng Wang
  • Publication number: 20030141369
    Abstract: A scanning apparatus utilizing gravity acceleration for scanning is provided. The scanning apparatus comprises a U-shaped housing, a shaft bearing, a housing and a scanning head. The shaft bearing passes through the housing with two ends thereof respectively and rotationally fastened on two sidewalls of the U-shaped housing, thereby the housing is vertically and rotationally fastened in the U-shaped housing. The scanning head is disposed in the housing with an engageable piece engaged with a hook-type element of the housing so as to fasten the scanning head at a predetermined position close to the top end of the housing. When the scanning head is going to scan, the engagement between the engageable piece and the hook-type element is released and a starting power is applied to the scanning head by gravity acceleration. Thereby the scanning head is guided to move downward to scan via cooperation between a guiding piece and a guiding rail.
    Type: Application
    Filed: January 25, 2002
    Publication date: July 31, 2003
    Applicant: UMAX DATA SYSTEMS INC.
    Inventors: Yu-Ru Yu, Kuo-Jeng Wang
  • Publication number: 20030142368
    Abstract: The present invention provides a repeatedly sampling method for image scanning. It is mainly a sample treatment procedure proceeded for the data of an image scanning device during the scanning of an image. The method mainly includes the steps of sampling, sorting, eliminating group-departing value, and getting mean value, etc. Wherein, the sampling procedure makes several times of scanning pick-up on a single point of the image to produce several sets of sampling value; the sorting procedure sorts the several sets of sampling value after being sampled according to their magnitudes; the eliminating group-departing value procedure gives up the relatively larger values and relatively smaller values from the several sets of sampling value after being sorted; the getting mean value procedure gets a mean value from the several sets of sampling value. By applying the repeatedly sampling method of entirety of the invention, it may reduce the error of data pick-up during the procedure of scanning.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 31, 2003
    Inventor: Kuo-Jeng Wang
  • Publication number: 20030107779
    Abstract: In accordance with the present invention, a method and a system for promoting scanning speed are provided. The method comprises steps of determining a transmission rate of a transit interface, adjusting system clock responsive to the transmission rate of the transit interface to change a data generated rate, and scanning an original to generate data at the rate controlled by the system clock. The key aspect of the present invention is by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the system clock is adjusted to produce the data at a rate that can reduce the possibility of memory buffer full leading to the reduction in the time wasting on start-stop processes and therefore promote the scanning speed without requiring the increase in size of a memory buffer.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Applicant: UMAX DATA SYSTEMS INC
    Inventors: Chun-Jen Chen, Kuo-Jeng Wang
  • Publication number: 20030081143
    Abstract: In accordance with the present invention, a method and a system for increasing scanning speed are provided. The method comprises steps of determining a transmission rate of a transit interface, scanning an original to generate an image data, and adjusting a cycle time of the image data to change a data generated rate responsive to the transmission rate of the transit interface. The key aspect of the present invention is by adjusting the cycle time of a state machine to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the cycle time of the state machine is adjusted to produce the data at a rate that prevents the smearing process.
    Type: Application
    Filed: November 1, 2001
    Publication date: May 1, 2003
    Applicant: UMAX DATA SYSTEMS INC.
    Inventor: Kuo-Jeng Wang
  • Publication number: 20030035152
    Abstract: A scanning method with two exposure steps. A scanning system is driven with a motor. While the motor is stopped after rotating a predetermined distance, the scanning process is started. In the first scanning step, an odd (even) number of pixel video data is obtained. The odd (even) number of pixel video data is compensated as required. In a second scanning step, an even (odd) number of pixel video data is compensated as required. The video data is then output.
    Type: Application
    Filed: August 14, 2001
    Publication date: February 20, 2003
    Inventors: Kuo-Jeng Wang, Tom-Chin Chang, Rong-Ji Liu
  • Publication number: 20030025073
    Abstract: A single step multi-section exposure scanning method for a scanner. The scanner includes a photo-sensor and a stepper motor. The photo-sensor has N rows of sensor cells that correspond to each primary color. The scanning device is driven forward an exposure distance for each revolution of the stepper motor. The single step multi-section exposure scanning method includes the following steps. First, the photo-sensor moves forward one exposure distance. One row of sensor cells is exposed after moving every 1/Nth of the exposure distance. Thereafter, analogue voltages obtained through the exposed row of sensor cells are transmitted to an analogue/digital converter. The above process is repeated until the entire document is scanned.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventors: Rong-Ji Liu, Kuo-Jeng Wang, Tom-Chin Chang
  • Publication number: 20030025949
    Abstract: A control device and a method for controlling scanning speed of a scanner. The control device includes a decision device and a driving device. The decision device further includes an image buffer, an up-down counter and a comparator. The decision device receives the input image data and utilizes the up-down counter to compute data access volume inside the image buffer. The comparator decides whether to increase or decrease the scanning speed according to the data access volume and also outputs decision data to the driving device.
    Type: Application
    Filed: July 31, 2001
    Publication date: February 6, 2003
    Inventor: Kuo-Jeng Wang
  • Publication number: 20030012429
    Abstract: An automatic determination method for color scan of a scanner. The previewed image data is analyzed for the determination method of the color, gray scale and black-and-white scan. Whether the image data is suitable for black-and-white scan is determined. When it is suitable, the black-and-white scan is executed. When it is not suitable, whether the image data is suitable for gray scale scan is judged. If it is suitable for gray scale scan, the gray scan is performed. If it is not suitable for the gray scale scan, a color scan is performed. Therefore, without manual configuration by the user, a reasonable correction scan can be determined.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 16, 2003
    Inventor: Kuo-Jeng Wang
  • Publication number: 20030007141
    Abstract: An apparatus to reduce the transmission noise interference of a scannerhas a charge coupled device, a shield circuit and a charge coupled device cable. Image analog signals are output from the charge coupled device. The shield circuit is coupled to the charge coupled device to filter the unwanted analog signal output from the charge coupled device, and to reserve the required analog signal. The charge coupled device is coupled to the shield circuit to transmit the required analog signal.
    Type: Application
    Filed: July 3, 2001
    Publication date: January 9, 2003
    Inventor: Kuo-Jeng Wang
  • Publication number: 20020186422
    Abstract: A method of reducing memory requirement in the compensation memory unit of a scanner. The method includes providing an even compensation data value and an odd compensation data value and averaging the two to produce an odd-even compensation data value. Only half as much memory space is required to hold the averaged odd-even compensation data values.
    Type: Application
    Filed: August 8, 2001
    Publication date: December 12, 2002
    Inventors: Tom-Chin Chang, Kuo-Jeng Wang, Rong-Ji Liu
  • Publication number: 20020163677
    Abstract: A method for determining a local compensation for the pixel brightness is applied to evaluate the pixels of a scanned document for which brightness needs to be compensated. The method comprises, for each pixel, first evaluating the difference between the corresponding brightness value and darkness value. The result of the difference then is compared to a predetermined level value. If the difference is less than the predetermined level value, the brightness of the corresponding pixel is compensated for.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 7, 2002
    Inventor: Kuo-Jeng Wang
  • Publication number: 20020135817
    Abstract: A transmission system and a method of correctly transmitting scan data within a scanner. The transmission system includes a synchronous dynamic memory and a buffer unit. The synchronous dynamic memory serves not only as a storage unit for holding data, but also provides a masking function for processing the last remaining scan data. The buffer unit is coupled to the synchronous dynamic memory for holding the scan data sent by the synchronous dynamic memory.
    Type: Application
    Filed: March 22, 2001
    Publication date: September 26, 2002
    Inventor: Kuo-Jeng Wang
  • Patent number: 6457110
    Abstract: A method of reading data from a synchronous dynamic random access memory inside a scanner. The synchronous dynamic random access memory has a plurality of memory banks. A batch of random access data is stored inside any one of the memory banks and a batch of burst data capable of operating in the burst mode is stored in any other memory bank. The command for reading the random number data and the burst mode command for transmitting burst mode data are issued concurrently.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: September 24, 2002
    Assignee: Umax Data Systems, Inc.
    Inventor: Kuo-Jeng Wang
  • Publication number: 20020133667
    Abstract: A method of reading data from a synchronous dynamic random access memory inside a scanner. The synchronous dynamic random access memory has a plurality of memory banks. A batch of random access data is stored inside any one of the memory banks and a batch of burst data capable of operating in the burst mode is stored in any other memory bank. The command for reading the random number data and the burst mode command for transmitting burst mode data are issued concurrently.
    Type: Application
    Filed: March 16, 2001
    Publication date: September 19, 2002
    Inventor: Kuo-Jeng Wang