Patents by Inventor Chih-Wen Huang

Chih-Wen Huang 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).

  • Patent number: 6567191
    Abstract: A locating structure for a dual-mode optical scanning device including a transparency scanning mode and a reflective scanning mode is disclosed. The locating structure includes at least one locating posts formed on a bottom surface of the transparency illumination module and at least one locating holes formed on an object focal plane of the scanner frame corresponding to the locating posts. When the transparency illumination module is closed onto the scanner frame, by means of the locating structure, the deflection between the transparency illumination module and the scanner frame can be limited, so as to accurately locate the transparency illumination module on the scanner frame and enhance the quality of scanned image.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 20, 2003
    Assignee: Umax Data Systems Inc.
    Inventor: Chih-Wen Huang
  • Patent number: 6555854
    Abstract: A charge coupled device (CCD) with multi-focus lengths is provided. The arrays of optical sensors with a plurality of transparent plates in parallel disposed thereon are disposed on a substrate. By way of either of changing the thicknesses of the transparent plates and changing the position levels of the arrays of the optical sensors, each of the arrays of the optical sensors obtains a different focal length. And thus, the depth of focus of the present charge coupled device is improved.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: April 29, 2003
    Assignee: Umax Data Systems Inc.
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Patent number: 6552835
    Abstract: A Reflective and Penetrative Scanning Apparatus has a body, a first ambulatory reflection module, a second ambulatory reflection module, a lens assembly, an image shooting unit and an adjustment means. The body incorporates a Reflective Script Platform and a Penetrative Script Platform. The First Ambulatory Reflection Module is equipped with two Light Sources and two lenses with which to produce two different Light Paths such that once the switching goes to the First Light Path, a light that is emitted from the Light Source will travel by way of the Reflective Script Platform to the Lens Assembly and the Image Shooting Unit, to execute Reflective Scanning operation and when the switching goes to the second Light Path, another light that is emitted from the Light Source will travel by way of the Penetrative Script Platform to the Lens Assembly and the Image Shooting Unit, to execute Penetrative Scanning Operation.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 22, 2003
    Assignee: Umax Data Systems, Inc.
    Inventor: Chih-Wen Huang
  • Publication number: 20030058489
    Abstract: The present invention is a changeable means for different total tracks and its method, the means reflects a light from a light source at least twice toward predetermined directions; the means comprises plural reflection elements, at least one of the plural reflection elements is a rotational reflection element, which has plural reflection surface sets, and each reflection surface set has at least one reflection surface; a pivot axis is for each rotational reflection element circulation and changing of reflection surface sets; a fixing apparatus, which connects to a rotational reflection element for adjusting and fixing positions of the rotational reflection element.
    Type: Application
    Filed: June 19, 2002
    Publication date: March 27, 2003
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Publication number: 20030030854
    Abstract: A focusing apparatus of an automatic document feeder, having the automatic document feeder has a scanning zone for an optical chassis to retrieve an image of a document. The focusing apparatus of automatic document feeder comprises at least one focusing chart, which is disposed at a location corresponding to the scanning zone. The focusing chart is comprised of a plurality of focus detecting elements and capable of automatic focusing by the optical chassis.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 13, 2003
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Publication number: 20030030923
    Abstract: An optical system device with a concave mirror, applicable for a scanner, comprising at least a curved reflection mirror and an image sensor. The curved reflection mirror is used for reflecting an image from an object to the image sensor. The curved reflection mirror can comprise a concave surface or a convex surface or both. At least a planar reflection mirror is located between the object and the curved reflection mirror, and is used to adjust a reflection angle and a reflection position of the image.
    Type: Application
    Filed: November 13, 2001
    Publication date: February 13, 2003
    Inventors: Chuan-Yu Hsu, Chih-Wen Huang
  • Publication number: 20030025948
    Abstract: A compensation apparatus for image scan, applied to an optical scanner with a platform, on which an object to be scanned is disposed. The optical scanner has a photosensitive apparatus with a set of scan photosensitive devices and a storage apparatus. When the object is scanned by the set of scan photosensitive devices, a scanned image is obtained and saved in the storage apparatus temporarily. The compensation apparatus has a set of calibration boards, a set of calibration photosensitive devices and an image processor. The set of calibration boards has two calibration boards located at two sides of the platform. The set of calibration photosensitive devices is located at two sides of the set of scan photosensitive device. The image processor is used to extract and compare the calibrated image, so as to adjust the scanned image.
    Type: Application
    Filed: August 3, 2001
    Publication date: February 6, 2003
    Inventors: Chih-Wen Huang, Cheng-Kuei Chen, Jen-Shou Tseng
  • Publication number: 20020191231
    Abstract: A transparent scanning light source for a scanner. The transparent scanning light source, having both lamps and their associated transformer, is mounted on a base frame and an n-shape light-channeling board is mounted on a cover. By detaching the light-channeling board and the lamps, fabrication of the cover is simplified. The light-channeling board is divided into an illumination section, a support section on each side of the illumination section and a corner section at the junction between the illumination section and the support section. The bottom surface of the support section is capable of channeling light emitted from the lamp into the light-channeling board and out through an irradiation area underneath the illumination section. A diffuser plate is also attached to the irradiation area of the illumination section so that an evenly spread light source is produced for transparent scanning.
    Type: Application
    Filed: June 15, 2001
    Publication date: December 19, 2002
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Patent number: 6494586
    Abstract: A back-light module with an improved light projecting assembly for an image scanning device is disclosed. The light projecting assembly includes a light projecting window having two symmetric or asymmetric opposite edges, incorporated with the back-light module. A light guide plate is mounted in the back-light module with a shape corresponding to that of the light projecting window. Two tubular lamps with a shape corresponding to the edges of the light guide plate. Light transmitted from the tubular lamps are guided by the light guide plate for spreading over and projecting from the light guide plate onto a diffusion plate arranged under the light guide plate. The light is further distributed by a diffusion plate and projected to the optical scanning module of the scanner via the light projecting window.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: December 17, 2002
    Assignee: Umax Data Systems Inc.
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Publication number: 20020186475
    Abstract: An optical system inside a scanner for scanning a document. The optical system has a carrier box, a light source, a set of light reflecting mirrors, a circuit board, a converging mirror and an optical sensor. The carrier box has a hollow interior and a receiving slot in the upper surface thereof. The light source is fixed outside the carrier box such that light emitted from a lamp and reflected back from a document is able to pass through the receiving slot into the carrier box. The set of reflecting mirrors inside the carrier box reflects the light beam towards the converging lens and focuses upon the optical sensor. The optical sensor converts intensity of the light beam into electrical signals. Image distance between the converging lens and the optical sensor are adjusted before positioning the lens and sensor on the circuit board.
    Type: Application
    Filed: June 11, 2001
    Publication date: December 12, 2002
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Publication number: 20020186443
    Abstract: An optical scanner that may assemble the lens design for varying the focus and resolution, having a light source, a reflection compound mirror, a charge coupled device, a basic objective lens and a compound lens. The basic objective lens is designed by simulation software. According to the lens design theory, the compound lens is designed. By incorporating the basic objective lens and the compound lens, different resolutions such as 1200 dpi, 1600 dpi and 2400 dpi of the optical scanner are obtained without redesigning the lens device, the current specification of the optical scanner is also varied.
    Type: Application
    Filed: August 3, 2001
    Publication date: December 12, 2002
    Inventor: Chih-Wen Huang
  • Patent number: 6493075
    Abstract: A Method to adjust the Ranging of the Modulation Transfer Function, MTF, of a Sensing System, more specifically, it provides for the preparation of a Test Chart of Modulation Transfer Function, of standard specification, and further, for the detection of the Modulation Transfer Function, MTF, for positions differing in picture depths, based on the location and size of said Test Chart, or alternatively on a variation in the thickness of the Crown Glass, whereby the acquisition of an applicable ranging of picture depth is achievable, which in turn provides a method of prompt derivation of a ranging scope of picture depths accommodating easy operation in the course of focal adjustment in workshop production of scanners.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: December 10, 2002
    Assignee: Umax Data Systems, Inc.
    Inventors: Chih-Wen Huang, Yin-Chun Huang
  • Publication number: 20020169509
    Abstract: A handheld Multi-Function Peripheral (MFP) capable of scanning includes the operation panel, the control processing unit, and the scanning apparatus. The operation panel is for the user to input a data and a scanning order. The control processing unit is for proceeding logic operation and data processing, and receiving the scanning order. The scanning apparatus includes the scanning channel, the light source, and the photoelectronic imaging device. The scanning channel is the passage for the to-be-scanned document. The light source and the photoelectronic imaging device are equipped in the one side of the scanning channel to provide the light for scanning and capture image of the to-be-scanned document, respectively.
    Type: Application
    Filed: January 31, 2002
    Publication date: November 14, 2002
    Inventors: Chih-Wen Huang, Chui-Kuei Chiu
  • Publication number: 20020158274
    Abstract: A charge coupled device (CCD) with multi-focus lengths is provided. The arrays of optical sensors with a plurality of transparent plates in parallel disposed thereon are disposed on a substrate. By way of either of changing the thicknesses of the transparent plates and changing the position levels of the arrays of the optical sensors, each of the arrays of the optical sensors obtains a different focal length. And thus, the depth of focus of the present charge coupled device is improved.
    Type: Application
    Filed: April 25, 2001
    Publication date: October 31, 2002
    Applicant: UMAX DATA SYSTEMS INC.
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Patent number: 6471203
    Abstract: A paper separating device of the automatic document feeder can be assembled with a paper case loaded at least one piece of paper to provide the automatic paper separating and feeding function. The separating device includes: a paper feeding roller, which is located at one side of the paper case to carry its internal paper moving along the rolling tangent direction; a friction slice, which has one side near the paper feeding roller and locates the paper between the friction slice and the paper feeding roller; a first elastic component, which is combined at one bottom of the friction slice to provide the elastic force perpendicular to the tangent direction to force the friction slice approach the paper feeding roller; the characteristic is there is a second elastic component located at the other side of the friction slice to provide an elastic force opposite to the tangent to force the friction slice move toward the opposite tangent direction.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 29, 2002
    Assignee: Umax Data Systems
    Inventor: Chih-Wen Huang
  • Publication number: 20020145762
    Abstract: An optical chassis pasted with plating film reflection thin plates includes: a shell body, a light source, plural reflection elements, a lens set, and an imaging apparatus. The thin plates of flexible material in lieu of prior glass material constitute the reflection elements. The reflection material is plated on one side surface of the thin plates, and the glue is coated on the other side surface of the thin plates. The thin plates, coated with glue, may be directly pasted onto appropriate positions of an optical chassis as the reflection elements. Not only the present invention completely gets rid of the prior positioning devices, such as spring pieces, screws, and the like, but also it decreases the number of parts, saves assembly time and lowers the production cost. And, further it is without lowering the quality of image scanning, which is resulted from no loose or no movement of the reflection elements.
    Type: Application
    Filed: April 5, 2001
    Publication date: October 10, 2002
    Inventors: Chuan-Yu Hsu, Chih-Wen Huang
  • Patent number: 6463238
    Abstract: The present invention is to provide a light source module for optical scanner, which may mainly receive the light source provided by at least one lamp. The light source module for optical scanner includes: at least one light-guiding element and a light-gathering element. The light-guiding element has a first surface and a second surface. The sectional area of the first surface is larger than that of the second surface. The first surface may receive the light of the lamp and transmit it to the second surface by the light-guiding element. The light-gathering element has a light-gathering front surface that is adjacent to the second surface. The light-gathering element is connected with the second surface. The second surface gathers the light transmitted by the light-guiding element and scatters the light uniformly by the light-gathering front surface.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: October 8, 2002
    Assignee: Umax Data Systems, Inc.
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Publication number: 20020135820
    Abstract: The present invention relates to a scanning apparatus capable engaging an automatic document feeder. Wherein the “light” of at least one light source, through the inter-positions and corresponding relationship of angles, and after being reflected and changing direction, emits to an image retrieving unit. Among its a plurality of reflection mirrors, the scanning apparatus capable of engaging an automatic document feeder further comprising a switch-able reflection mirror, which capable of switching a first position to scan a manuscript by platform type and a second position matching with an automatic document feeder to scan a manuscript by document feeding type. When the scanning apparatus capable engaging an automatic document feeder proceeds a scan by document feeding type, an adjustment apparatus of image retrieving unit makes an appropriate displacement movement to adjust the variation of total light-path.
    Type: Application
    Filed: July 20, 2001
    Publication date: September 26, 2002
    Inventor: Chih-Wen Huang
  • Publication number: 20020118406
    Abstract: A scanning device capable of operating in a reflection mode or a transparency mode. The scanning device includes a transparency processing section, a reflection processing section and an optical system. The transparency processing section includes a document feeding port, a plurality of rollers, a first light source and a driving motor. The document feed port has a narrow slit in the upper surface of the scanning device. The rollers are aligned from the document feeding port down towards the base of the scanning device. The first light source is positioned between the side edge and the document feeding port. The driving motor is responsible for driving the rollers. The reflection processing section is located on the upper surface of the scanning device. The reflection processing section includes a second light source. The optical system includes a first reflecting mirror, a second reflecting mirror set, a lens and an optical sensor.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 29, 2002
    Inventor: Chih-Wen Huang
  • Publication number: 20020117546
    Abstract: A carrier mechanism for supporting and moving a travelling module along a predetermined travelling path is disclosed. The carrier mechanism includes a guide device fixed inside a casing, a carrier movable along the guide device between a forward and rearward positions with the travelling module removably mounted on the carrier and a driving mechanism including a motor mounted to the carrier and in driving engagement with the guide device for moving the carrier between the forward and rearward positions. The guide device includes an elongate strip integrally formed on a bottom of the casing with a rack formed along a side face thereof to drivingly engage a pinion of the motor. Alternatively, a timing belt and toothed wheel system or a wire and pulley system or a worm and gear system may be used to replace the pinion and rack system.
    Type: Application
    Filed: February 27, 2001
    Publication date: August 29, 2002
    Inventor: Chih-Wen Huang