Patents by Inventor Michael D. James
Michael D. James 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: 7916079Abstract: A GPS receiver (10) is disclosed comprising a GPS antenna and a GPS RF front-end including an analogue to digital converter for sampling received GPS signals and a processor for outputting a stream of the GPS signal samples and inserting repeated instances of timing data indicating the timing of the sampling of the GPS signals in the stream in place of some of the GPS signal samples. Also disclosed is a corresponding method of providing a position fix and a computer program, computer-readable storage medium and apparatus for the same.Type: GrantFiled: August 11, 2005Date of Patent: March 29, 2011Assignee: U-BLOX AGInventor: Michael D. James
-
Publication number: 20080094279Abstract: A GPS receiver (10) is disclosed comprising a GPS antenna and a GPS RF front-end including an analogue to digital converter for sampling received GPS signals and a processor for outputting a stream of the GPS signal samples and inserting repeated instances of timing data indicating the timing of the sampling of the GPS signals in the stream in place of some of the GPS signal samples. Also disclosed is a corresponding method of providing a position fix and a computer program, computer-readable storage medium and apparatus for the same.Type: ApplicationFiled: August 11, 2005Publication date: April 24, 2008Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventor: Michael D. James
-
Publication number: 20020083321Abstract: The invention provided for a distributed digital television system (52) comprising a plurality of discrete television sets (54, 56, 58) and means for decoding digital television signals for display at the television sets (54, 56, 58) wherein the said means for decoding comprises a respective plurality of distributed signal decoding arrangements (62, 66, 72) and further includes means (78, 86) for transferring decoding authorization data over a network (86) linking the said plurality of television sets (54, 56, 58) in the system and from a digital decoding arrangement (62, 66, 72) associated with one television set (54, 56, 58) to a digital decoding arrangement (62, 66, 72) associated with another television set (54, 56, 58).Type: ApplicationFiled: December 13, 2001Publication date: June 27, 2002Inventor: Michael D. James
-
Patent number: 5928063Abstract: A tool for polishing/fining an ophthalmic lens has a housing with an interior open at the ends thereof. Resiliently elastic diaphragms with central spherical work surfaces extend across the ends of the housing. A cluster of rods extends longitudinally in sliding abutment within the housing from one diaphragm work surface to the other. A cap has a rim which fixes the exterior perimeter of the first diaphragm against the top of the housing. The cap defines a pneumatic chamber longitudinally aligned between the exterior surface of the first diaphragm and the interior wall of the cap. A passage through the cap wall admits air under pressure into the chamber. A ring fixes the exterior perimeter of the other diaphragm against the bottom of the housing. Preferably the cap and ring thread onto the housing with the diaphragms therebetween. Pneumatic distortion of one diaphragm is transmitted by longitudinal displacement of individual ones of the cluster of rods to the interior surface of the other diaphragm.Type: GrantFiled: June 13, 1997Date of Patent: July 27, 1999Assignee: Coburn Optical Industries, Inc.Inventors: Michael D. James, Fritz R. Kruis
-
Patent number: 5762546Abstract: A conformal tool for fining/polishing ophthalmic lenses has a rigid base, a substantially air impervious elastic membrane and a bladder conformable to a surface of the lens to be fined/polished. The perimeters of the base, the membrane and the bladder are contiguously clamped to provide a pneumatically discrete chamber between the base and the membrane and a chamber containing conformable filler such as sand between the membrane and the bladder. The pneumatically discrete and filler containing chambers together have a substantially fixed volume. The clamping provides a passage into the pneumatically discrete chamber so that air under pressure, when admitted into the pneumatically discrete chamber, stretches the membrane to increase the pneumatically discrete chamber volume and decrease the filler containing chamber volume. As air pressure is increased, the air separates the membrane from the base to build an air cushion therebetween as the conformable filler chamber volume decreases.Type: GrantFiled: December 13, 1995Date of Patent: June 9, 1998Assignee: Coburn Optical Industries, Inc.Inventors: Michael D. James, Fritz R. Kruis
-
Patent number: 5662518Abstract: A tool for polishing/fining an ophthalmic lens has a housing with an interior open at planar ends thereof. A cluster of rods is longitudinally aligned in sliding abutment within the housing, each rod of the cluster extending from one planar end of the housing to the other. One resiliently elastic diaphragm extends across one planar end and another resiliently elastic diaphragm extends across the other planar end. A cap has a rim which fixes the exterior perimeter of the first diaphragm against the top of the housing. The cap defines a pneumatic chamber longitudinally aligned between the exterior surface of the first diaphragm and the interior wall of the cap. A passage through the cap wall admits air under pressure into the chamber. A ring fixes the exterior perimeter of the other diaphragm against the bottom of the housing. Screws secure the cap and ring to the housing with the diaphragms therebetween.Type: GrantFiled: May 3, 1996Date of Patent: September 2, 1997Assignee: Coburn Optical Industries, Inc.Inventors: Michael D. James, Fritz R. Kruis
-
Patent number: 5648025Abstract: A machine and process for making an ultraviolet cured block for an ophthalmic lens are provided in which a lens is placed at an input port to the machine by an operator. Data related to the lens is fed to or stored in the machine from either a keyboard or a data base. The lens is then collected from the input port for processing and transported, preferably by means of pneumatics, to a block molding point within the confines of the machine. A special adhesive is administered to the surface of a mold unit and the mold unit is then positioned to receive the lens. Pressure is applied to squeeze the lens against the adhesive and the mold. After molding the adhesive onto the lens, the lens and mold are transported via servo slide to a UV station where curing takes place from above the lens. After preliminary curing, the lens and mold unit are taken to a removal station and the lens, together with the adhesive cured to its front surface, is removed from the mold unit, again preferably by means of pneumatics.Type: GrantFiled: December 13, 1995Date of Patent: July 15, 1997Assignee: Coburn Optical Industries, Inc.Inventors: Merritt S. Cook, Michael D. James, Todd R. Strope
-
Patent number: 5219043Abstract: A support apparatus for the operator's cab of an overhead crane. The crane has a rigid depending mast and an intermediate mast and carriage vertically movable on the rigid mast for lifting and carrying a load. A hoist is mounted on the crane and attached to the carriage for raising and lowering the carriage, the intermediate mast and the load at normal operating speeds. The support apparatus includes a first support affixed to the cab and the intermediate mast for supporting the cab on the intermediate mast during normal operating speeds of the intermediate mast. The first support permits detaching the cab from the intermediate mast upon the occurrence of an excessive lowering operating speed of the intermediate mast. A second support affixed to the cab and to an overhead support of the crane then supports the cab in a suspended manner and the intermediate mast drops toward the floor below the crane without the cab.Type: GrantFiled: December 19, 1991Date of Patent: June 15, 1993Assignee: Harnischfeger CorporationInventors: Neal C. Eriksson, Michael D. James, Jan B. Loebel, Peter A. Kerrick
-
Patent number: 5167401Abstract: A hoist drive for a double hoist carrying member having a hold hoist drum, a hold rope connected to the hold hoist drum and from which the carrying member is suspended, and a hold motor for rotating the hold hoist drum to raise and lower the carrying member. The hoist drive further includes a close hoist drum, a close rope connected to the close hoist drum and from which the carrying member is suspended, and a close motor for rotating the close hoist drum to raise and lower the carrying member. During raising of the carrying member, the hold and close motors are each supplied with a.c. power at different preselected frequencies. The hold and close motors each operate along a first pair of intersecting frequency to torque curves during a raising operation in which the hold motor curve is steeper than the close motor curve.Type: GrantFiled: August 23, 1990Date of Patent: December 1, 1992Assignee: Harnischfeger CorporationInventors: Michael D. James, Robert H. Reuss
-
Patent number: 4723237Abstract: A communication system comprises a plurality of subscriber stations (51-1 to 51-n) each of which comprise a transmitter (3) and a receiver (4). A switching network comprising a selection switch (57) and a synchronous digital switching network (60) is connected to the subscriber stations (51-1 to 51-n) via separating and combining circuits (52-1 to 52-n) each of which comprise a transmitter (3) a receiver(4) and an interface unit (55). The transmitter (3) transmits a signal comprising a square wave frequency modulated signals which is modulated by a wideband (video) signal, on transitions of which short or long pulses are initiated in response to a data signal. The wideband and data signals are separated in the separating and combining circuits (52-1 to 52 -n) to enable the wideband and data signals to be separately processed in the switching networks (57,60).Type: GrantFiled: May 6, 1986Date of Patent: February 2, 1988Assignee: U.S. Philips CorporationInventors: Derek Andrew, Michael D. James