Patents by Inventor Cheng-Ming Chang

Cheng-Ming Chang 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: 20120242763
    Abstract: The present invention related to an ink-jet head, adaptive for an ink cartridge including two ink tanks, the ink-jet head includes: a nozzle board, having a plurality of nozzles; and an ink-jet chip, being used for controlling the ink-jetting and having a total area region consisting of a length and a width, wherein the total area region includes: a non-wiring region, where two ink flow channels being installed therein; and a wiring region, where an internal circuit being installed therein; wherein the internal circuit includes a plurality of ink-jet unit sets, and every ink-jet units of the plurality of ink-jet unit sets include a heater installed correspondingly to the nozzle; wherein the area of the wiring region of the ink-jet chip is less than 77% of the area of the total area region of the ink-jet chip.
    Type: Application
    Filed: December 5, 2011
    Publication date: September 27, 2012
    Inventors: Hao Jan MOU, Ta Wei Hsueh, Ying Lun Chang, Rong Ho Yu, Hsien Chung Tai, Cheng Ming Chang, Wen Hsiung Liao, Yung Lung Han
  • Publication number: 20120081420
    Abstract: The present invention relates to a printing system, which comprises: a data receiving and processing unit connected with the electronic device, for receiving a printing signal from the electronic device and processing the printing signal into a data signal; and an ink-jet head module including a control chip and an ink-jet heating chip. The control chip includes a wireless transmission module and a control circuit, wherein the wireless transmission module includes an antenna, a front-end processing unit, an instruction unit, a clock transmission unit, and a modulation and demodulation unit. Besides, the control circuit includes a control processing unit, a coding and decoding processing unit, and a memory device, to receive the data signal processed by the wireless transmission module and transform the processed data signal into a control signal. In addition, the ink-jet heating chip is connected with the control circuit for executing the ink-jet printing.
    Type: Application
    Filed: September 7, 2011
    Publication date: April 5, 2012
    Inventors: Rong Ho YU, Wen Hsiung Liao, Hsien Chung Tai, Cheng Ming Chang
  • Publication number: 20120081471
    Abstract: The present invention relates to an ink-jet chip, adaptive for a printing device, at least comprising: a plurality of ink-jet heating elements and an ink-jet signal generating circuit. The ink-jet signal generating circuit at least includes: a counter electrically connected with the printing device, for receiving a counter control signal and a pulse signal, and generating a plurality of counter signals corresponding to the counter control signal and the pulse signal; and a decoder electrically connected with the counter, for receiving and decoding the plurality of counter signals, for generating a plurality of address signals, and selecting a corresponding ink-jet heating element basing on the plurality of address signals.
    Type: Application
    Filed: September 7, 2011
    Publication date: April 5, 2012
    Inventors: Wen Hsiung LIAO, Rong Ho YU, Cheng Ming CHANG, Hsien Chung TAI
  • Publication number: 20020157967
    Abstract: The present invention relates to an electrochemical gaseous chlorine sensor. The sensor is characterized by covering one of the electrodes with a polymer material having a sensing activity and conductivity. The sensor includes: an ionic permeable film for separating a measuring chamber and a reference chamber, the ionic permeable film being a solid polymer electrolyte; a first electrode and a second electrode formed on two opposite sides of the ionic permeable film, the first electrode and the second electrode being conductors with catalytic activities; and a conductive polymer film formed on the first electrode. A fixed voltage ranging from −0.3 to 1.3V, preferably 0 to 0.2V, between said first electrode and said second electrode is maintained with a device, when the sensor is in use.
    Type: Application
    Filed: February 26, 2001
    Publication date: October 31, 2002
    Applicant: Institute of Ocupational Safety and Health, Council of Labor Affairs, Executive Yuan
    Inventors: Tzong-Rong Ling, Cheng-Ming Chang, Tse-Chuan Chou