Patents by Inventor Michael Purdy

Michael Purdy 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: 7113670
    Abstract: A hot spot filter for a light guide is created by taking an image of the light output pattern of an illuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light guide. The hot spot filter may be incorporated into the image display by adjusting the grey scale of individual pixels to provide sufficient compensation.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: September 26, 2006
    Assignee: Research in Motion Limited
    Inventors: James Robinson, Marc Drader, Michael Purdy
  • Publication number: 20060102129
    Abstract: A recoil starter has a guide surface with limited polar symmetry about the axis of the pull-rope limiting rotational orientation of the pull-handle in the at-rest position to less than three angular positions.
    Type: Application
    Filed: November 18, 2004
    Publication date: May 18, 2006
    Inventors: Michael Purdy, Mark Lokken, Koichiro Takahashi
  • Publication number: 20060078097
    Abstract: A system apparatus and method for generating streaming audio content includes an encoder computer for receiving, encoding, and storing audio signals, and a telephonic interface coupled to the encoder computer, the telephonic interface having voice and data inputs. A system further includes a telephone coupled to the encoder computer via the telephonic interface, the telephone for providing at least a portion of the audio signals via the voice input and for providing control signals to the encoder computer via the data input.
    Type: Application
    Filed: August 5, 2005
    Publication date: April 13, 2006
    Inventors: Robert Herbelin, Edward Keyes, Michael Purdy
  • Publication number: 20060056197
    Abstract: A hot spot filter for a light guide is created by taking an image of the light output pattern of an illuminated light guide. The hot spot filter may be a film, a layer, or an additional liquid crystal display dedicated to attenuating bright spots from the light guide. The hot spot filter may be incorporated into the image display by adjusting the grey scale of individual pixels to provide sufficient compensation.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 16, 2006
    Inventors: James Robinson, Marc Drader, Michael Purdy
  • Publication number: 20050189921
    Abstract: A charger has two or more separate charging ports to which two or more rechargeable batteries can be coupled, respectively. Current from a single current source is allocated to the two or more separate charging ports so that the two or more rechargeable batteries will be fully charged at substantially the same time.
    Type: Application
    Filed: February 27, 2004
    Publication date: September 1, 2005
    Inventors: Ryan Bayne, Michael Purdy
  • Publication number: 20050185090
    Abstract: An improved handheld electronic device includes an improved battery compartment door having a miniature camera disposed thereon. The battery compartment door with its camera advantageously does not alter the form factor of the handheld electronic device and can easily be replaced with a similar battery door without a camera which, when installed on the handheld electronic device, will provide the same form factor. A battery compartment of the handheld electronic device is configured to be larger than required to accommodate a battery of the handheld electronic device in order to also accommodate the camera of the battery compartment door.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 25, 2005
    Inventors: Michael Purdy, Steven Green, Roman Rak, Alexander Bersenev
  • Publication number: 20050174094
    Abstract: A battery charger may include a charger connector to be coupled to a corresponding device connector of a portable device including a rechargeable battery. The battery charger may also include a charging circuit connected to the charger connector, and a controller connected to the charger connector and the charging circuit. The controller may be for causing a portable device connected to the charger connector to identify its corresponding portable device type and its corresponding rechargeable battery type from among a plurality of different portable device types and different battery types, and for causing the charging circuit to charge the rechargeable battery based thereon.
    Type: Application
    Filed: February 11, 2004
    Publication date: August 11, 2005
    Applicant: Research In Motion Limited, a Canadian corporation
    Inventors: Michael Purdy, Ryan Bayne
  • Patent number: 5908111
    Abstract: A blister pack comprises a cover member (12) and a support member (22). The cover member (12) includes a distortional region (14) formed from a plurality of slits (16) therein. A saleable item is located between the cover member (12) and the support member (22). The slits (16) allow the cover member to distort to the size of the saleable item.
    Type: Grant
    Filed: August 7, 1997
    Date of Patent: June 1, 1999
    Inventor: Michael Purdy