Patents by Inventor Manfred Christ

Manfred Christ 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).

  • Increasing values of a read and a trigger pointers when a write pointer reaches the read pointer in a circular FIFO (first-in-first-out) store
    Patent number: 6470402
    Abstract: For the transfer of data coming from N channels, which are sampled in a pre-determined sequence, to a processor by means of a circular FIFO store (30) with n storage stages, whilst retaining this pre-determined sequence, and whereby the output of the last stage is connected to the input of the first stage, the following steps are implemented: a) With each write operation of data into the FIFO store (30), a write pointer (SZ) is set to a value which designates the storage stage into which has been written last; b) with each reading operation of data from the FIFO store (30), a read pointer (LZ) is set to a value which designates the storage stage which is subsequently to be read, whereby the reading process always comprises the reading of data from i×N storage stages, i being an integer and i×N<n; c) a trigger pointer (TZ) is set to a value j×N, j being an integer, j×N<n and i≦j; d) if, after a write process, the value of the write pointer (SZ) is equal to or greater than t
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: October 22, 2002
    Assignee: Texas Instruments Incorporated
    Inventors: Heinz-Peter Beckemeyer, Richard Oed, Manfred Christ
  • Adjustable delayed-action door closer
    Patent number: 5517719
    Abstract: An adjustable delayed-action door closing device, particularly for use with screen doors or storm doors. The device comprises a cylindrical housing with a piston disposed within with the cylindrical housing. A biasing mechanism urges the piston into the cylindrical housing and a controlling mechanism controls the rate at which the piston is so urged. The shaft of the piston has a section of greater diameter than the remainder of the shaft a compression member cooperatively located within the cylindrical housing. The compression member is compressible to a diameter equal to or less than the greater diameter of the shaft, to provide friction contact with the greater diameter of the shaft when it is located within the compression member. A mechanism to pre-set and adjust the degree of friction contact of the compression member and the section of the shaft with greater diameter is provided.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: May 21, 1996
    Inventor: Manfred Christ