Patents Assigned to Primax Electronics
  • Camera with multimode power button
    Patent number: 6571066
    Abstract: A camera includes a power supply, a microcontroller having a timer, and a multimode power button capable of being actuated for an actuation time. When the camera is off and the button is actuated, the microcontroller turns the camera on. When the camera is on and the button is actuated so the actuation time is shorter than a threshold time, the microcontroller changes a mode of the camera. And when the camera is on and the button is actuated so the actuation time is not shorter than the threshold time, the microcontroller turns the camera off.
    Type: Grant
    Filed: November 18, 2002
    Date of Patent: May 27, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Wen-Yi Tsai
  • Mouse switch mechanism for determining a rotational direction of a ratchet on a pointing device
    Patent number: 6570108
    Abstract: A switch mechanism has a ratchet, two tappets, and two sensors. The ratchet has a plurality of sawteeth. The tappets are installed at two opposite sides of the ratchet. Each sensor is installed beside the ratchet for generating detecting signals. When the ratchet rotates clockwise, the sawteeth of the ratchet will push one tappet toward its corresponding sensor so as to generate corresponding clockwise detecting signals. When the ratchet rotates counterclockwise, the sawteeth of the ratchet will push the other tappet toward its corresponding sensor so as to generate corresponding counterclockwise detecting signals.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: May 27, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Hao-Fong Lin
  • Power adapter assembly for portable electrical device
    Publication number: 20030080630
    Abstract: A power adapter assembly for use between a portable electrical device and a power source is disclosed. The power adapter assembly includes a power connecting device having a first joint at one end thereof for electrically connecting to the portable electrical device and a second joint at the other end thereof, a data storage unit electrically connected with the second joint of the power connecting device and storing the power supply data corresponding to the portable electrical device, and a power adapter having a socket for electrically connecting to the second joint of the power connecting device. The power adapter reads the power supply data stored in the data storage unit, converts the power from the power source into a required power form according to the power supply data, and transfers the required power to the portable electrical device through the power connecting device.
    Type: Application
    Filed: July 5, 2002
    Publication date: May 1, 2003
    Applicant: Primax Electronics Ltd.
    Inventor: Chien-Te Liu
  • Bi-directional low-pass filter for use at user end or office end in communication network
    Patent number: 6552630
    Abstract: A bi-directional low-pass filter for use at a user end or an office end in a communication network is disclosed. By providing compensation and high-band attenuation circuitry, the low-pass filter exhibits an improved attenuation value in high-band and a general attenuation value in a low-frequency band. The satisfactory attenuation performance in the high-frequency band minimizes the signal interference of a high-band communication terminal with a low-band communication terminal in the communication network. Further, by providing symmetric input/output circuitry, the low-pass filter can be operated reversibly.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: April 22, 2003
    Assignee: Primax Electronics Ltd.
    Inventors: Her-Jun Chueh, Kuang-Che Chen
  • Anti-abrasive flat flexible cable
    Patent number: 6552272
    Abstract: An anti-abrasive flat flexible cable for use with an image scanner for electrically connecting a carriage with a circuit board is disclosed. The flat flexible cable includes a metal foil having a first end electrically connected to the circuit board and a second end electrically connected to the carriage for signal transmission between the circuit board and carriage; a thermoplastic plastic wrapper enclosing the metal foil with two opposite ends of the metal foil exposed for electric connection with the circuit board and the carriage, respectively; and a spacer strip selected from a group consisting of Teflon, Nylon and polyoxylated methylene (POM), and attached onto the thermoplastic plastic wrapper for isolating the thermoplastic plastic wrapper from the glass scanning platform.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: April 22, 2003
    Assignee: Primax Electronics, Ltd.
    Inventors: Kung-Cho Sheng, Wen-Lung Hung
  • Transformer coil bracket
    Publication number: 20030067374
    Abstract: A transformer coil bracket includes a bracket body having a horizontal iron core trough formed in the center thereof and two ends which have respectively input terminals and output terminals extending downwards. The exterior of the iron core trough is wound by a primary coil and a secondary coil which connect electrically and respectively with the input terminals and output terminals. The iron core trough is coupled with an iron core which serves as a magnetic induction medium of the transformer. There is a horizontal wall located between the iron core and the input and output terminals to increase creepage distance between the iron core and terminals for reducing transformer thickness.
    Type: Application
    Filed: June 12, 2002
    Publication date: April 10, 2003
    Applicant: Primax Electronics Ltd.
    Inventor: Chih-Peng Wu
  • Wind power generator for vehicles
    Publication number: 20030057708
    Abstract: A wind power generator for vehicles which have a pneumatic power source comprises an air vane set, a generator device and a rectifier. The air vane set receives the kinetic force of the pneumatic power source to drive a rotor of the generator device rotating. The rotor cuts through magnetic force lines in the generator device to generate inductive current. The inductive current is stabilized in voltage and rectified by the rectifier to supply output electricity for car use electric devices.
    Type: Application
    Filed: February 22, 2002
    Publication date: March 27, 2003
    Applicant: Primax Electronics Ltd.
    Inventor: Chih-Peng Wu
  • Projecting device for displaying electrical images
    Patent number: 6530663
    Abstract: A projecting device for displaying electrical images. The projecting device has an illumination device for emitting a polarized trichrome light, three modulating devices for modulating three polarized monochrome lights to display the same electrical image, a light separating device having a first dichroic mirror and a third polarization beam splitting mirror arranged along a first diagonal direction and a first and a second polarization beam splitting mirrors arranged along a second diagonal direction, and a first retarder film installed between the second and the third polarization beam splitting mirrors. The first dichroic mirror, the first and second polarization beam splitting mirrors are used for separating the polarized trichrome light into three monochrome lights and passing each monochrome light to a correspondent modulating device for optical modulation.
    Type: Grant
    Filed: July 15, 2001
    Date of Patent: March 11, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Shang-Yi Lin
  • Charger capable of converting multiple power sources
    Patent number: 6528970
    Abstract: A charger includes a direct current (DC) converter and an alternating current (AC) converter. The DC converter includes a DC input port, a conversion circuit, a transmission port for inputting a second voltage, an output port, and a switch for selectively outputting the first voltage or the second voltage. The AC converter has an AC input port, an AC conversion circuit for transforming an AC power source to the second voltage, and a power port corresponding to the transmission port for outputting the second voltage to the transmission port. The DC converter and the AC converter are capable of engaging with each other such that the power port is connected to the transmission port, and the charger can provide power via the output port provided by the AC power source or the DC power source.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: March 4, 2003
    Assignee: Primax Electronics Ltd.
    Inventors: Sen-Hsiang Liu, Yi-Te Chiang
  • Adjustable-height stand
    Patent number: 6523799
    Abstract: An adjustable-height stand that attaches to a device and allows for rough and fine adjustment of the height of the device. The stand has a screw rod, an adjusting mechanism, and a supporting mechanism. The supporting mechanism attaches to the device. The adjusting mechanism is connected to the supporting mechanism and the screw rod and has two states. In the fine adjustment state, the height is adjusted by turning the screw rod. In the rough adjustment state, the contact between the screw rod and the adjusting mechanism can be broken so that the supporting mechanism can slide up and down the length of the screw rod without turning the screw rod.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: February 25, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Cheng-Min Su
  • Image scanner with automatic signal compensation
    Patent number: 6522432
    Abstract: The present invention relates to an image scanner with automatic signal compensation function for compensating the instability of a light source of the image scanner. The image scanner comprises a test region, a light source for illuminating the document and the test region, optical means for conveying the light reflected from the document and the test region, a line image sensor for receiving the light from the optical means and generating an image signal corresponding to the light reflected from the document and a brightness signal corresponding to the light reflected from the test region, and a signal compensation circuit for amplifying the image signal according to the brightness signal to compensate the instability in the brightness of the light source.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: February 18, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Chien-Chih Lin
  • Automatic start mechanism of shredding apparatus
    Publication number: 20030019964
    Abstract: An automatic start mechanism for a shredding apparatus is disclosed. The shredding apparatus includes a shredding mechanism for cutting the paper when the paper passes through a channel, a power source for outputting a motive power for the shredding mechanism, a trigger disposed at an entrance of the channel for arising a move when the paper passing through the channel to be against thereto, a delay unit for producing an against force driven by the power source, a lever connected between the trigger and the delay unit for moving in response to the trigger and the delay unit against, and a switch electrically connected to the power source and contacted to a first portion of the lever. The distance between the first portion of the lever and the trigger is smaller than a distance between the delay unit and the trigger.
    Type: Application
    Filed: November 6, 2001
    Publication date: January 30, 2003
    Applicant: Primax Electronics, Ltd.
    Inventor: Pei-Yuan Lee
  • Charging systems for simultaneously charging notebook computers and portable devices
    Patent number: 6504343
    Abstract: A charging system for charging multiple portable devices includes transformers, branch converters and converters. Each transformer is specific to a different power supply. The branch converters and converters, specific to different portable devices, can be connected in such a way to transfer power to the various portable devices. Connections are standardized within the system giving it a modular design.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: January 7, 2003
    Assignee: Primax Electronics Ltd.
    Inventor: Tsung-Jen Chang
  • Paper-guiding structure of shredding apparatus
    Publication number: 20020195510
    Abstract: A paper-guiding structure of a shredding apparatus is disclosed. The apparatus includes a first shaft, a second shaft disposed with the first shaft in parallel, wherein a channel is formed between the first shaft and the second shaft for a paper to pass therethrough. A plurality of cutters are staggeredly sleeved and fixed on the first and second shafts respectively and transmitted by the first and second shaft to rotate for cutting paper passing through the channel. A plurality of guiding plates are disposed in the space between every two adjacent cutters for each shaft, and movably sleeved on the first or second shaft. Each of the guiding plates is integrally formed and has a continuous surface facing the channel to eliminate slits through which shredded paper sneaks out of the guiding path.
    Type: Application
    Filed: November 6, 2001
    Publication date: December 26, 2002
    Applicant: Primax Electronics Ltd.
    Inventor: Shin-Fu Lin
  • Initialization method for one-way communications and apparatus for use therewith
    Patent number: 6473071
    Abstract: A method of simulating two-way communications over a one-way communications system, enabling an indicator on the transmitter to reflect the manner in which signals from a function key on the transmitter side will be interpreted by an application on the receiver side of the communications system, is carried out by causing a list of current states of the function on the receiver side of the communications system rather than transmitting a signal concerning the current state of the list to the transmitter side. The transmitter side of the communication system is part of a wireless keyboard that does not include a receiver to properly indicate which of two possible states a function of the computer will be in even though the computer has no way of communicating that state to the receiver.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: October 29, 2002
    Assignee: Primax Electronics, Ltd.
    Inventor: Shu-Ming Liu
  • Projector tilt adjust system comprising a latching mechanism for a height-adjusting system
    Patent number: 6461002
    Abstract: A latching mechanism includes an aperture surface through which a threaded rod may pass. Half of the surface of the aperture is smooth and fixed in place relative to a housing. The other half is threaded and formed from an internal module that is slidable within the housing. The internal module is biased by a spring towards the fixed portion of the aperture surface. Flaring tabs on either side of the internal module support the internal module within the housing to ensure that a minimum of contact is established between the housing and the internal module so as to present a smooth latching/unlatching action.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: October 8, 2002
    Assignee: Primax Electronics Ltd.
    Inventor: Cheng-Min Su
  • Mouse housing with integrally formed holding portion and key portion
    Publication number: 20020135562
    Abstract: A housing structure with integrally formed holding portion and key portion is disclosed. The housing structure includes a main body made of a flexible material; a key portion arranged on and integrally formed with the main body to be depressed to enter a command therethrough; and an elongated recess arranged as an interface between the main body and the key portion for allowing the key portion to be bent down relative to the main body to enter the command. Owing to the integration of the entire housing structure, the manufacturing and assembling of the housing are relatively easy, and the cost is relatively low. Moreover, the housing can be made smooth and beautiful.
    Type: Application
    Filed: March 22, 2001
    Publication date: September 26, 2002
    Applicant: Primax Electronics Ltd.
    Inventor: Chang-Chih Wu
  • Scanner
    Patent number: D464656
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 22, 2002
    Assignee: Primax Electronics Ltd.
    Inventors: Hui-Yi Lin, Ching-Yu Hung
  • Scanner
    Patent number: D464970
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 29, 2002
    Assignee: Primax Electronics Ltd.
    Inventor: Yu-Sho Fan
  • Scanner
    Patent number: D465494
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: November 12, 2002
    Assignee: Primax Electronics Ltd.
    Inventor: Hui-Yi Lin