Patents by Inventor Jan VAN DER Meer

Jan VAN DER Meer 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: 5608697
    Abstract: Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus. One or more audio and/or full motion video signals, e.g., a video signal (and possibly computer data), are recorded on an interactive compact disc. The video signal prior to being recorded is encoded into code blocks of variable lengths, each corresponding to a picture or picture pair. A decoder delay time parameter associated with one or more of the code blocks, which parameter represents a length of time (i.e., a delay time) with which the corresponding picture of a code block is to be displayed after that code block has been received by a decoding apparatus is determined and included in the video signal prior to being recorded.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: March 4, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Wiebe De Haan, Jan Van Der Meer
  • Patent number: 5606539
    Abstract: Methods and apparatus for encoding and decoding an audio and/or video signal, and a record carrier for use with such apparatus. One or more audio and/or full motion video signals, e.g., a video signal (and possibly computer data), are recorded on an interactive compact disc. The video signal prior to being recorded is encoded into code blocks of variable lengths, each corresponding to a picture or picture pair. A decoder delay time parameter associated with one or more of the code blocks, which parameter represents a length of time (i.e., a delay time) with which the corresponding picture of a code block is to be displayed after that code block has been received by a decoding apparatus is determined and included in the video signal prior to being recorded.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: February 25, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Wiebe De Haan, Jan van der Meer
  • Patent number: 5043810
    Abstract: A transmitting section of the system according to the invention has transmitting section signal paths for at least three classes of motion, each with a preprocessing circuit (143, 145 and 147) which are provided with means for individually sampling. These sampling means sample in accordance with separate sampling patterns so that each preprocessing circuit (143, 145 or 147) supplies a video signal which is suitable for a display with an optimum distribution of temporal and/or spatial resolution for the associated class of motion. Dependent on the class of motion determined, one of the preprocessing circuits (143, 145 or 147) is coupled to a channel (170). The video signal to be supplied to the channel (170) is therefore a video signal suitable for a display with an optimum distribution of temporal and/or spatial resolution for the given class of motion (FIG. 1A).
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: August 27, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Franciscus W. P. Vreeswijk, Jan Van Der Meer, Henk W. A. Begas, Timothy I. P. Trew
  • Patent number: 4933759
    Abstract: Motion detection is based on picture signal value comparisons between picture elements (P) in consecutive, interlaced television pictures (n-2, n-1), (n, n+1), (n+2, N+3), motion or no motion, respectively, being determined in dependence on the fact whether comparison results exceed or do not exceed a threshold value. Changes in picture information between movie pictures (MP1, MP2, MP3) can negatively influence the telecine television motion detection if they make use of a preceding and a subsequent television picture. To prevent this, an instantaneous picture element (P1) in a first field (n) of a television picture (n, n+1) is compared with a number (P4, P5, P6, P7) of surrounding picture elements in a second field (n+1) and an instantaneous picture element (P11) in the second field N+1) is compared with a number (P14, P15, P16, P17) of surrounding picture elements in the first field (n).
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: June 12, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Jan Van der Meer, Franciscus W. P. Vreeswijk
  • Patent number: 4924306
    Abstract: A motion estimation for a picture element (pixel) (P1) of a television picture (TP) is performed at pixel level by comparison of the picture signal value of the present pixel (P1) with that of a corresponding pixel (P1) in a previous and/or subsequent television picture and with that of a plurality of surrounding pixels (P2', P3', P4', P5') in the present picture. Dependent on whether a threshold value is exceeded, it is decided whether there is no motion or whether there is motion. In the comparison with the surrounding pixels, an OR function is present for the detection "no motion". It is assumed that a first and a second comparison result "no motion" associated with the pixel-pixel comparison and with the pixel-group comparison are stored for pixels (P) of the television picture (TP). Subsequently, the first and second comparison results in a sub-region (MA1) associated with the present pixel (P1) with a matrix of pixels (P1 . . .
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 8, 1990
    Assignee: U.S. Philips Corporation
    Inventors: Jan van der Meer, Kiran Varshneya-Rohra, Franciscus W. P. Vreeswijk
  • Patent number: 4860125
    Abstract: When a record carrier (14) is inscribed for an n.sup.th time (n>1), in which record carrier the information is recorded in first blocks (FB) in tracks (T.sub.1, T.sub.2, . . . ) which adjoin each other and which are inclined relative to the longitudinal direction of the record carrier, each track containing at least one first block (FB.sub.1) of information and at least one second block (SB.sub.1) of tracking signals (f), only the first blocks of new information are written over the first blocks recorded previously in the tracks and the second blocks of tracking signals are not erased from the record carrier. These second blocks are employed for the purpose of tracking when the record carrier is inscribed for the n.sup.th time. In this way it is achieved that the new information is recorded exactly in the original tracks, so that perfect inserts can be made.
    Type: Grant
    Filed: September 8, 1987
    Date of Patent: August 22, 1989
    Assignee: U.S. Philips Corporation
    Inventor: Jan van der Meer
  • Patent number: 4684986
    Abstract: In a television signal memory write circuit which is synchronized by horizontal and vertical synchronizing signal patterns obtained from the television signal to be entered, the mutual positions of these patterns being measured with the aid of a measuring circuit; and depending on this measurement, the vertical synchronizing signal pattern is delayed by a variable delay circuit such that in practice the patterns are prevented from coinciding, thereby preventing a change in the position of a predetermined line number in the television signal memory circuit. This renders the circuit less sensitive to interference.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: August 4, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Frits A. Steenhof, Petrus W. G. Welles, Petrus A. C. M. Nuijten, Jan van der Meer
  • Patent number: 4670085
    Abstract: Apparatus for peeling positive print sheets from disposable components of peel-apart diffusion transfer film unit assemblies which comprises an open bottom chassis capable of being positioned over a receptacle and supporting a rotatable drum for carrying a processed film unit assembly into operative relationship with peeling blade assemblies to remove the print and release the remaining components of the film assembly for disposal through the open bottom of the chassis. The peeling components engage only marginal portions of the print and involve a combination of a movable peeling blade to engage the leading marginal edge of the print and a pair of fixed peeling blades which engage the side margins of the print and retain the print for manual removal from the apparatus.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: June 2, 1987
    Assignee: Polaroid Corporation
    Inventors: Jan van der Meer, Kurt Hagen
  • Patent number: 4588275
    Abstract: A photographic camera of the single lens reflex type having a reflex member pivotable between an exposure position and a viewing position there being provided as a part cooperating with the reflex member, a dark slide for covering an exposure plane before the reflex member is in its exposure position.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: May 13, 1986
    Assignee: Polaroid Corporation
    Inventor: Jan van der Meer
  • Patent number: 4149791
    Abstract: An attachment for a photographic camera for alternately maintaining a focussing screen and a film holder in an operative position with respect to a camera. The attachment is provided with a focussing screen rendered movable by connection to a rotatable shaft between operative and operative positions to permit placement of the film holder when the screen is in its inoperative position. Locking means actuated by the rotatable shaft are provided to lock the focussing screen or the film holder in operative positions. Also, means operated by rotation of the shaft are provided to control the condition of the camera shutter.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: April 17, 1979
    Assignee: Polaroid Corporation
    Inventor: Jan VAN DER Meer