Patents by Inventor Martinus J. H. van de Steeg

Martinus J. H. van de Steeg 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).

  • Charge-coupled device having overexposure control
    Patent number: 4849814
    Abstract: A charge-coupled image sensor arrangement has an overexposure adjustment feature whereby the excess of generated electrons is drained in vertical direction to the substrate. In order to adjust the maximum acceptable extent of overexposure, an additional low voltage can be applied to the blocking gates. As a result, it is possible to adjust the maximum overexposure without the maximum white level being variable. Due to the fact that the blocking voltage is a d.c. voltage, the dissipation substantially does not increase.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: July 18, 1989
    Assignee: U.S. Philips Corp.
    Inventor: Martinus J. H. Van De Steeg
  • Picture pick-up device including a solid-state image sensor and an electronic shutter
    Patent number: 4769709
    Abstract: When using an image sensor (1) having at least a three-layer structure of semiconductor material of, for example, n-p-n conductivity type, in which an n-substrate (2) accommodates strip-shaped regions (3, 4) of alternately higher doped p-type and still higher doped n-type on a substrate side, and in which substrate the p-regions (3) extend to below the n-regions (4) and in which an electrode system (61-64) directed at right angles to the strip-shaped regions (3, 4) is present, an electronic shutter (2-6, SP) can be realized by using a shutter signal (CP1-4, SP) in which a shutter pulse (SP) is present during picture information integration periods so that a charge connection (2, 3, 4) for picture pick-up elements is produced. Consequently charge losses across biased, photosensitive semiconductor junctions (3, 4) and free charge packets under the electrode system (61-64) corresponding thereto can be replenished or depleted, respectively, at the shutter action.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: September 6, 1988
    Assignee: U.S. Philips Corporation
    Inventor: Martinus J. H. Van De Steeg
  • Autofocus television camera with means for reading and comparing partial images to derive a focus indication
    Patent number: 4668991
    Abstract: A camera for recording television, photographic or cinematographic images comprises an automatic focusing device. The information required for automatic focusing is obtained with the aid of a partial blocking arrangement for blocking two different portions of an optical path leading to an electronic image sensor. These two portions are located on opposite sides of an optical central axis. After signals obtained during the partial blocking periods have been compared with each other, the focusing is adjusted until signal correlation is optimized.To produce a camera having both undisturbed scene recording and automatic focusing, while using only one sensor, this camera includes a charge transfer device. The device comprises a pickup member, a storage member, and a shift register member.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: May 26, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Albert J. P. Theuwissen, Munehisa Izushi, Cornelis A. M. Jaspers, Martinus J. H. van de Steeg, Arend J. W. A. Vermeulen