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).

  • SIGNAL TRANSMISSION STRUCTURE AND LAYOUT METHOD FOR THE SAME
    Publication number: 20090056984
    Abstract: A signal transmission structure is provided. The signal transmission structure includes conduction blocks periodically formed at a power plane, neck blocks connecting adjacent conduction blocks, and openings formed corresponding to the neck blocks at a ground plane for reducing equivalent capacitance between the neck blocks and the ground plane, so as to improve the noise isolation performance.
    Type: Application
    Filed: December 6, 2007
    Publication date: March 5, 2009
    Applicant: TATUNG COMPANY
    Inventors: Shih-Chieh Chao, Chih-Wen Huang, Chun-Lin Liao
  • Network device with hybrid-mode transmitter
    Patent number: 7483688
    Abstract: A network device comprises a hybrid-mode transmitter for transmitting a differential transmission signal at a first transmission rate or a second transmission rate. The network device includes a first mode channel and a second mode channel. The first mode channel includes a voltage mode driver and a current mode driver for outputting the differential transmission signal. The second mode channel includes a second mode driver, which is one of a voltage mode driver and a current mode driver. The network device transmits the differential transmission signal at the first transmission rate through the voltage mode driver of the first mode channel and the second mode driver. The network device transmits the differential transmission signal at the second transmission rate through at least one of the current mode driver and the voltage mode driverfirst mode channel.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: January 27, 2009
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chen-Chih Huang, Chih-Wen Huang
  • Structure of light-source module
    Patent number: 7443550
    Abstract: The invention discloses an improved structure of light-source module, which arranges a reflection piece of light-source module in an image picking-up device of optical scanner. The invention applies the design of improved reflection piece to generate a compensatory function to the light source to reduce the waste formed by the light dissipation, which will be gathered by the reflection piece and be reflected to the document to be scanned. With the design of appropriate angle and position, the reflection piece may completely reflect the light onto the document to be scanned for obtaining a preferable quality of scanned image. Wherein, the reflection piece may be designed as two pieces, one of which may reach the function of light compensation, or one reflection piece may be designed as two reflection parts, one of which may reach the function of light compensation.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: October 28, 2008
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Transceiver for full duplex communication systems
    Patent number: 7436787
    Abstract: A transceiver in a full duplex communication system includes a transmitting circuit coupled to a channel for transmitting a transmit signal to the channel, a cancellation signal generator coupled to the channel for generating a cancellation signal according to the transmit signal, and an echo cancellation device coupled to the transmitting circuit and the cancellation signal generator for attenuating an echo corresponding to the transmit signal with the cancellation signal.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: October 14, 2008
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chih-Wen Huang, Mu-Jung Chen
  • Compensation apparatus for image scan
    Patent number: 7408180
    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: Grant
    Filed: December 29, 2006
    Date of Patent: August 5, 2008
    Assignee: Transpacific IP, Ltd.
    Inventors: Chih-Wen Huang, Cheng-Kuei Chen, Jen-Shou Tseng
  • Method for suppressing resonant effect between capacitors connected in parallel
    Patent number: 7391281
    Abstract: A method for suppressing the resonant effect between capacitors connected in parallel is disclosed. By adjusting the length of the transmission line of the shunt capacitors, the performance of the shunt capacitors, which can be applied on various types of filtering circuits, can be improved in the desired bandwidth.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: June 24, 2008
    Assignee: Tatung Company
    Inventors: Shih-Chieh Chao, Chih-Wen Huang, Chun-Lin Liao
  • OPERATING METHOD AND CHANGER FOR OPTICAL MODULE/PRINTER MODULE SYSTEM
    Publication number: 20080130020
    Abstract: A method of operating an optical module/printer module system through a changer such that either the optical module or the printer module is driven. A first module and a second module is defined such that if the first module is an optical module, the second module is a printer module and if the first module is a printer module, the second module is an optical module. The operating method includes the following steps. In step one, the changer engages with the first module and drives the first module. In step two, the changer rotates so that the changer detaches from the first module and engages with the second module. In step three, the changer drives the second module.
    Type: Application
    Filed: October 4, 2007
    Publication date: June 5, 2008
    Applicant: Transpacific IP, Ltd.
    Inventors: Wen-Yuan Chang, Chih-Wen Huang
  • Satellite tracking method
    Publication number: 20080117104
    Abstract: A satellite tracking method is provided. The satellite tracking method first groups satellites into at least two groups on the basis of their arithmetic relationships, then determines whether any satellite of one selected satellite group is within the vision range of a receiving end with the use of a low dimension correlation device, and if that is the case synchronizes the satellite with the receiving end with the use of a full dimension correlation device.
    Type: Application
    Filed: November 20, 2006
    Publication date: May 22, 2008
    Inventors: Tsui-Tsai Lin, Da-Ben Fung, Gau-Joe Lin, Chien-Hsing Liao, Chih-Wen Huang
  • Multi-rate network transmission circuit
    Patent number: 7375659
    Abstract: A network transmitter and an associated transmitting method are disclosed. The network transmitter includes a signal converter and a signal driver. The former can convert an input signal into a current signal, and the latter can output a differential transmission signal according to the current signal. The signal driver includes a feedback network which can switch between a first configuration and a second configuration.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: May 20, 2008
    Assignee: Realtek Semiconductor Corp.
    Inventor: Chih-Wen Huang
  • Floating window
    Patent number: 7359096
    Abstract: A floating window, suitable for use in a flatbed scanner. The flatbed scanner has at least a top lid and a chassis. The floating window includes a transparent flat panel disposed under an opening of a top lid. A supporting structure and a limiting structure are further installed on the top lid, and a flexible structure is Installed between the supporting structure and the limiting structure. While being pushed by the chassis and pressed by the flexible structure, the transparent flat panel is in a floating status. When the chassis is periodically shifting to perform scanning, the transparent flat panel is correspondingly undulating up and down according to the periodic movement of the chassis; and consequently, the document disposed on the transparent flat panel is shifted up and down accordingly.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: April 15, 2008
    Assignee: Transpacific IP, Ltd.
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • Method and apparatus for fastening adjustable optical lenses
    Patent number: 7333248
    Abstract: A paper-separating plate is adapted for a paper-separating mechanism having a paper-separating roller. The paper-separating plate placed around a side of the paper-separating roller comprises a main body and a cushion. The main body has a surface and a plurality of grooves and the grooves are positioned on the surface. The cushion is positioned on the surface of the main body and covers the grooves. The cushion positioned over the partial grooves is elastically pressed onto the paper-separating roller. The grooves are linear and the direction of extending the linear grooves is substantially parallel with the axis of the paper-separating roller, the linear grooves neighboring one another or each other. Besides, the cushion is made of flexible material and the main body is made of rigid material.
    Type: Grant
    Filed: April 23, 2002
    Date of Patent: February 19, 2008
    Assignee: Transpacific IP, Ltd.
    Inventors: Jen-Shou Tseng, Chih-Wen Huang, Chuan-Yu Hsu
  • Low noise multilayer printed circuit board
    Publication number: 20080037237
    Abstract: A low noise multilayer printed circuit board includes at least one ground layer and at least one power layer. The at least one ground layer is divided into a first area and a second area. The first area and the second area are connected by a first metal neckline. The at least one power layer is divided into a third area and a fourth area. The third area and the fourth area are connected by a second metal neckline. The first area corresponds to the third area. The second area corresponds to the fourth area. The location where the first and second areas are connected by the first metal neckline is different from that where the third and fourth areas are connected by the second metal neckline.
    Type: Application
    Filed: December 22, 2006
    Publication date: February 14, 2008
    Applicant: Tatung Company
    Inventors: Shih-Chieh Chao, Chih-Wen Huang, Chun-Lin Liao
  • Echo cancellation device for full duplex communication systems
    Patent number: 7304961
    Abstract: An echo cancellation device for a full duplex communications system is provided. The full duplex communication system has a transmitter for transmitting a transmit signal and a receiver for receiving a receive signal. The echo cancellation device has a filter for outputting a filter signal according to the transmit signal, an echo cancellation circuit connected to the filter for outputting an echo cancellation signal according to the filter signal, at least one echo cancellation resistor connected to the transmitter, the receiver, and the echo cancellation circuit, and an echo cancellation detection circuit for outputting a control signal according to an echo residue at the receiver to control the filter.
    Type: Grant
    Filed: June 7, 2004
    Date of Patent: December 4, 2007
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chen-Chih Huang, Chih-Wen Huang
  • Changeable means for different total tracks and its method
    Patent number: 7301679
    Abstract: In one embodiment, at least one rotational reflection element is circulated such that one or more reflection surface sets is positioned along an optical path of a scanner. Circulation is provided by rotating a fixing element that is coupled to the rotational reflection element. The fixing element may comprise a power source and a fixing pin, whereinthe fixing pin is operable to fix a position of the rotational reflection element.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: November 27, 2007
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • [Operating method and changer for optical module/printer module system]
    Patent number: 7289250
    Abstract: A method of operating an optical module/printer module system through a changer such that either the optical module or the printer module is driven. A first module and a second module is defined such that if the first module is an optical module, the second module is a printer module and if the first module is a printer module, the second module is an optical module. The operating method includes the following steps. In step one, the changer engages with the first module and drives the first module. In step two, the changer rotates so that the changer detaches from the first module and engages with the second module. In step three, the changer drives the second module.
    Type: Grant
    Filed: July 4, 2003
    Date of Patent: October 30, 2007
    Assignee: Transpacific IP, Ltd.
    Inventors: Wen-Yuan Chang, Chih-Wen Huang
  • Multi-layer printed circuit with low noise
    Patent number: 7259334
    Abstract: A multi-layer printed circuit board having a low noise characteristic, the multi-layer printed circuit board includes at least one circuit layer; at least one isolation line for dividing the at least one circuit layer into at least two areas, the at least one isolation line forming an open pattern and the at least one isolation line extendedly forming a long neck line into the at least one area; and at least one capacitor placed at one side of the opening of the open pattern in any one of the areas.
    Type: Grant
    Filed: February 11, 2005
    Date of Patent: August 21, 2007
    Assignee: Tatung Co., Ltd.
    Inventors: Shih-Chieh Chao, Chih-Wen Huang, Chun-Lin Liao
  • CHANGEABLE MEANS FOR DIFFERENT TOTAL TRACKS AND ITS METHOD
    Publication number: 20070165287
    Abstract: The present invention is a changeable apparatus for different total tracks and a corresponding method. The apparatus reflects a light from a light source at least twice toward predetermined directions. The apparatus 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. The rotational reflective element firer comprises a pivot axis is for each rotational reflection element for circulating and changing of reflection surface sets and affixing apparatus, which connects to a rotational reflection element for adjusting and fixing positions of the rotational reflection element.
    Type: Application
    Filed: December 22, 2006
    Publication date: July 19, 2007
    Inventors: Yin-Chun Huang, Chih-Wen Huang
  • COMPENSATION APPARATUS FOR IMAGE SCAN
    Publication number: 20070159666
    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: December 29, 2006
    Publication date: July 12, 2007
    Inventors: Chih-Wen Huang, Cheng-Kuei Chen, Jen-Shou Tseng
  • COMPENSATION APPARATUS FOR IMAGE SCAN
    Publication number: 20070152145
    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: December 29, 2006
    Publication date: July 5, 2007
    Inventors: Chih-Wen Huang, Cheng-Kuei Chen, Jen-Shou Tseng
  • Compensation apparatus for image scan
    Patent number: 7236272
    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: Grant
    Filed: August 3, 2001
    Date of Patent: June 26, 2007
    Assignee: Transpacific IP, Ltd.
    Inventors: Chih-Wen Huang, Cheng-Kuei Chen, Jen-Shou Tseng