Patents Assigned to IDT, Inc.
  • Patent number: 5983251
    Abstract: A modelling technique for compact representation of related images is disclosed. The images are described as collections of spatial segments, each of which is modelled with a multivariate bi-linear model in the intensity and similarity also in the address domain. As applied to digitized video sequences, each bi-linear model consists of a set of spatial change patterns relative to a reference and a set of corresponding temporal scores that indicate how much of each change pattern is present in each image. Both the structure of the encoding and decoding algorithms and also the data structure of the compact representation are disclosed. This multi-domain modelling allows efficient data representation by removal of redundancies in the spatial, temporal and other domains.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: November 9, 1999
    Assignee: IDT, Inc.
    Inventors: Harald Aagaard Martens, Jan Otto Reberg
  • Patent number: 5476444
    Abstract: A method for extracorporeal blood heating to effect whole body hyperthermia, which utilizes a hemodialyzer with a sorbent suspension in the dialysate, a blood pump and a heat exchanger--in addition to various probes and catheters and heated anterior and posterior blankets for the patient--to effect extracorporeal treatment without adverse effect on blood physiology and without the need for general anesthesia. Blood returning to the body is heated to at least about 46.degree. C. Incorporation of hemodialysis into the blood heating treatment solves at once several problems which plagued prior art hyperthermia techniques: it rectifies any imbalances of sodium, potassium, magnesium, bicarbonate or phosphate, and may remove toxins incident to necrosis of tumors and virally infected cells. Hyperthermia protocols with sorbent--based dialysis of blood thus avoid the various serious side effects which complicated--even to the point of death--the hyperthermia treatments known from the past.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: December 19, 1995
    Assignee: IDT, Inc.
    Inventors: Norman G. Keeling, Stephen R. Ash, Robert B. Truitt, Joseph A. Guzman