Patents by Inventor Josephus A. H. M. Kahlmann

Josephus A. H. M. Kahlmann 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).

  • Encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa, such that the conversion is parity inverting
    Patent number: 6771195
    Abstract: A device is disclosed for encoding a stream of databits of a binary source signal (S) into a stream of databits of a binary channel signal (C), wherein the bitstream of the source signal is divided into n-bit source words (x1, x2), which device comprises converting means (CM) adapted to convert said source words into corresponding m-bit channel words (y1, y2, y3). The converting means (CM) are further adapted to convert n-bit source words into corresponding m-bit channel words, such that the conversion for each n-bit source word is parity inverting (table I) (FIG. 1). The relations hold that m>n≧1, p≧1, and that p is an odd integer that can vary. Preferably, m=n+1. Further, a decoding device is disclosed for decoding the channel signal obtained by means of the encoding device.
    Type: Grant
    Filed: April 18, 2003
    Date of Patent: August 3, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Josephus A. H. M. Kahlmann
  • Encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versa, such that the conversion is parity inverting
    Publication number: 20030201919
    Abstract: A device is disclosed for encoding a stream of databits of a binary source signal (S) into a stream of databits of a binary channel signal (C), wherein the bitstream of the source signal is divided into n-bit source words (x1, x2), which device comprises converting means (CM) adapted to convert said source words into corresponding m-bit channel words (y1, y2, y3). The converting means (CM) are further adapted to convert n-bit source words into corresponding m-bit channel words, such that the conversion for each n-bit source word is parity inverting (table I) (FIG. 1). The relations hold that m>n≧1, p≧1, and that p is an odd integer that can vary. Preferably, m=n+1.
    Type: Application
    Filed: April 18, 2003
    Publication date: October 30, 2003
    Inventor: Josephus A.H.M. Kahlmann
  • Encoding/decoding n-bit source words into corresponding m-bit channel words, and vice versea, such that the conversion is party inverting
    Patent number: 6597297
    Abstract: An encoder encodes a stream of date-bits of a binary source signal into a stream of date-bits of a binary channel signal, wherein the bitstream of the source signal is divided into n-bit source words. The encoder includes a converter for converting the source words into corresponding m-bit channel words. The converter converts n-bit source words into corresponding m-bit channel words, such that the conversion for each n-bit source word is parity inverting. The relations hold that m>n≧1, p≧1, and that p is an odd integer that can vary. Preferably, m=n+1. A decoder decodes the channel signal, obtained by means of the encoder, to reproduce the source signal.
    Type: Grant
    Filed: March 13, 2000
    Date of Patent: July 22, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Josephus A. H. M. Kahlmann