Enhanced intra-aortic balloon assist device
Granted: December 23, 2003
Patent Number:
6666814
The present invention is an intra-aortic circulatory enhancing apparatus for use in human patients to improve blood flow to other arteries continuous with the aorta of the patient. The apparatus comprises an internal inflation means located within the aorta of the patient and an external inflation means located outside of the patient. The internal inflation means can be an internal balloon coupled to a hollow extent which is operatively coupled to a blood communication means. The blood…
Error recovery method for video compression coding using multiple reference buffers and a message channel
Granted: December 2, 2003
Patent Number:
6658618
Transmitting and receiving video data includes an encoder storing macroblocks in a plurality of reference buffers, the encoder transmitting macroblocks encoded relative to each of the reference buffers, a decoder receiving the macroblocks, and, in response to the decoder indicating an error with respect to a particular macroblock corresponding to a first one of the buffers, the encoder using a second one of the buffers for error recovery if there is no error associated with the second…
System and method for videoconferencing across networks separated by a firewall
Granted: October 14, 2003
Patent Number:
6633985
A multimedia firewall adapter supplements a conventional firewall to allow transmission of videoconferencing data (e.g., audio and video data) associated with a protocol, such as the H.323 protocol. The multimedia firewall adapter supplements the conventional firewall so that audio and video data associated with the H.323 protocol are allowed to pass through the multimedia firewall adapter, thus circumventing the conventional firewall. The multimedia firewall adapter receives signals…
Speakerphone
Granted: September 30, 2003
Patent Number:
D480059
Electronic pan tilt zoom video camera with adaptive edge sharpening filter
Granted: September 2, 2003
Patent Number:
6614474
An apparatus and a method is provided for enhancing a digital image comprised of pixels by adaptively sharpening the pixels and clipping the numerical values of the sharpened edge pixels so as to fall between the smallest unsharpened numerical value and the greatest unsharpened numerical value, respectively, of the pixels located within a neighborhood of the pixels. Pixels which are located on an edge are sharpened in the direction perpendicular to the edge. The threshold value used to…
Speakerphone
Granted: August 19, 2003
Patent Number:
D478560
Video camera system
Granted: July 22, 2003
Patent Number:
D477622
Locating an audio source
Granted: July 15, 2003
Patent Number:
6593956
A system, such as a video conferencing system, is provided which includes an image pickup device, an audio pickup device, and an audio source locator. The image pickup device generates image signals representative of an image, while the audio pickup device generates audio signals representative of sound from an audio source, such as speaking person. The audio source locator processes the image signals and audio signals to determine a direction of the audio source relative to a reference…
Personal videoconferencing system having distributed processing architecture
Granted: July 8, 2003
Patent Number:
6590604
A personal videoconferencing system includes a videoconferencing appliance connected to a personal computer through a Universal Serial Bus (USB) or similar connection. The appliance is provided with a video camera and microphone for generating local video and audio streams. The local video and audio streams are compressed by a video and audio encoder residing at the appliance, and the compressed video and audio streams are conveyed to the personal computer over the USB connection. The…
Signal routing for reduced power consumption in a conferencing system
Granted: July 1, 2003
Patent Number:
6587682
A technique is provided for reducing power consumption of an internally powered console in an audio system through frequency based signal routing. A system employing the technique includes a base unit having an interface for receiving a signal representative of acoustic information. The base unit includes a filter system for splitting the signal into low-frequency and high-frequency component signals. The low-frequency signal is routed to a first audio driver for reproduction. The…
Video camera
Granted: June 24, 2003
Patent Number:
D476345
Web-enabled presentation device and methods of use thereof
Granted: May 6, 2003
Patent Number:
6560637
A presentation device includes an embedded web server for transmitting images representative of presentation information to network-connected terminals concurrently with the display of such presentation information at the presentation site. The images may be viewed at the terminals by pointing a conventional web browser to a DNS name or IP address associated with the presentation device. Certain of the terminals may be given presenter privileges, wherein the users of the presenter…
Integrated audio/video call control pod
Granted: April 22, 2003
Patent Number:
D473546
Vertical microphone array
Granted: March 25, 2003
Patent Number:
D472233
Audio system enclosure with speaker grills
Granted: March 18, 2003
Patent Number:
D471895
Horizontal microphone array
Granted: March 18, 2003
Patent Number:
D471899
Audio system enclosure
Granted: March 11, 2003
Patent Number:
D471533
Videoconferencing system with extensible microphone arrays and microphone grills
Granted: March 11, 2003
Patent Number:
D471573
Videoconferencing system with extensible microphone arrays
Granted: March 4, 2003
Patent Number:
D471219
Videoconferencing system
Granted: February 25, 2003
Patent Number:
D470873
