Patents by Inventor Willem Hoekstra

Willem Hoekstra 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: 8686481
    Abstract: Disclosed are embodiments of a semiconductor device comprising a semiconductor body with a semiconductor image sensor comprising a two-dimensional matrix of picture elements, each picture element comprising a radiation-sensitive element coupled to MOS field effect transistors for reading the radiation-sensitive elements, wherein a semiconductor region is sunken in the surface of the body having the same conductivity type as the body and having an increased doping concentration, the semiconductor region being disposed between the radiation-sensitive elements of neighboring picture elements.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: April 1, 2014
    Assignee: Trixell
    Inventors: Joris Pieter Valentijn Maas, Willem-Jan Toren, Hein Otto Folkerts, Willem Hendrik Maes, Willem Hoekstra, Daniel Wilhelmus Elisabeth Verbugt, Daniel Hendrik Jan Maria Hermes
  • Publication number: 20080197386
    Abstract: The invention relates to a semiconductor device with a semiconductor body (12) with an image sensor comprising a two-dimensional matrix of pixels (1) each comprising a radiation-sensitive element (2) with a charge accumulating semiconductor region (2A) and coupled to a number of MOS field effect transistors (3), in which in the semiconductor body (12) an isolation region (4) is sunken for the separation of neighboring pixels (1) underneath which a further semiconductor region (5) with an enlarged doping concentration is formed. According to the invention the further semiconductor region (5) is sunken in the surface of the semiconductor body (12) and wider than the isolation region (4).
    Type: Application
    Filed: April 26, 2006
    Publication date: August 21, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Joris Pieter Valentijn Maas, Willem-Jan Toren, Hein Otto Folkerts, Willem Hendrik Maes, Willem Hoekstra, Daniel Wilhelmus Elisabeth Verbugt, Daniel Hendrik Jan Maria Hermes
  • Patent number: 7286850
    Abstract: The present invention provides a wireless communication module system for use with a portable personal computer (PC) having a motherboard and an integral display screen. In one embodiment, the system includes a single wired interface having first and second ends, where the first end is coupled to the motherboard and the second end is coupled to the display screen and provides a connection port. The system further includes a wireless communication module having an antenna and an interface port removably coupled to the connection port. In this embodiment, the module also includes a transceiver configured to employ the antenna to transmit and receive radio communication signals, where the transceiver is further configured to employ the interface port to communicate with the motherboard. A method for performing a wireless communication and a wireless communication system incorporating the wireless communication module system or the method are also disclosed.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: October 23, 2007
    Assignee: Agere Systems Inc.
    Inventors: Frans Frielink, Frans Willem Hoekstra, Maarten Visee
  • Patent number: 7277130
    Abstract: The invention relates to an image pick up device (401) with pixels arranged in rows and columns. Every pixel (301) comprises a photosensitive element (302), a floating diffusion (304), a transfer transistor (303), an amplifying transistor (305) having its control electrode connected to the floating diffusion (304), and a reset transistor (306). An external node (310) is coupled to a selection switch via a row selection bus (406). The selection switch (411) provides either a first bias voltage, generated by a first voltage source (409), or a second bias voltage, generated by a second volt age source (410), to the row selection bus (406). Applying the first bias voltage and simultaneously turning on the reset transistor (306) programs the floating diffusion (304) to the first bias voltage which biases the amplifying transistor (305) in an on-mode, thereby selecting the pixel (301).
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: October 2, 2007
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Alouisius Wilhelmus Marinus Korthout, Willem Hoekstra
  • Publication number: 20050230681
    Abstract: An image sensor (1) having a semiconductor body (2) with a first conductivity type and having a surface (3), the surface being provided with a number of cells (4), a cell comprising a photosensitive element (5) and a reset transistor (6), the reset transistor comprising a source region (7), a drain region (8) and a gate region (9), the source region (7) and the drain region (8) having a second conductivity type opposite to the first conductivity type, the source region (7) of the reset transistor (6) being electrically connected to the photosensitive element (5). There is a well region (10) present which well region extends from the surface (3) into the semiconductor body (2) and extends at least partly below the gate region (9) and the well region has a first conductivity type. The source region (7) extends at least substantially in a doped region (11) of the photosensitive element (5), the doped region (11) having a second conductivity type.
    Type: Application
    Filed: July 31, 2003
    Publication date: October 20, 2005
    Inventors: Hein Folkerts, Joris Maas, Daniel Wilhelmus Verbugt, Natalia Lokianova, Daniel Hermes, Willem Hoekstra, Adrianus Mierop
  • Publication number: 20050128326
    Abstract: The invention relates to an image pick up device (401) with pixels arranged in rows and columns. Every pixel (301) comprises a photosensitive element (302), a floating diffusion (304), a transfer transistor (303), an amplifying transistor (305) having its control electrode connected to the floating diffusion (304), and a reset transistor (306). An external node (310) is coupled to a selection switch via a row selection bus (406). The selection switch (411) provides either a first bias voltage, generated by a first voltage source (409), or a second bias voltage, generated by a second volt age source (410), to the row selection bus (406). Applying the first bias voltage and simultaneously turning on the reset transistor (306) programs the floating diffusion (304) to the first bias voltage which biases the amplifying transistor (305) in an on-mode, thereby selecting the pixel (301).
    Type: Application
    Filed: December 3, 2002
    Publication date: June 16, 2005
    Inventors: Alouisius Korthout, Willem Hoekstra
  • Publication number: 20040235519
    Abstract: The present invention provides a wireless communication module system for use with a portable personal computer (PC) having a motherboard and an integral display screen. In one embodiment, the system includes a single wired interface having first and second ends, where the first end is coupled to the motherboard and the second end is coupled to the display screen and provides a connection port. The system further includes a wireless communication module having an antenna and an interface port removably coupled to the connection port. In this embodiment, the module also includes a transceiver configured to employ the antenna to transmit and receive radio communication signals, where the transceiver is further configured to employ the interface port to communicate with the motherboard. A method for performing a wireless communication and a wireless communication system incorporating the wireless communication module system or the method are also disclosed.
    Type: Application
    Filed: May 20, 2003
    Publication date: November 25, 2004
    Applicant: Agere Systems Inc.
    Inventors: Frans Frielink, Frans Willem Hoekstra, Maarten Visee