James M Hobza

US Patent:

6650895, Nov 18, 2003

Filed:

Nov 23, 1999

Appl. No.:

09/447696

Inventors:

Channasandra Ravishankar - Germantown MD
David Roos - Boyds MD
Anthony Noerpel - Lovettsville VA
Chandra Joshi - Gaithersburg MD
James Hobza - Carlsbad CA
Prabir Datta - New Delhi, IN
Yi Chen - Gaithersburg MD

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04Q 720

US Classification:

4554221, 455560, 455564, 455427

Abstract:

A system and a methodology to improve the end-user quality of service both in terms of response time and reliability for the transport of in-call DTMF signals in wireless systems, particularly in geostationary mobile satellite systems. The methodology encompasses several techniques to provide acceptable end-to-end quality of service for DTMF. A technique is applicable for transport of DTMF in the wireless subscriber to network direction, where DTMF digits are carried in the form of an out-band message. The central part of the technique is to allow multiple key presses in the same message, thereby increasing efficiency and throughput in long-delay environment. Another technique utilizes the vocoders functionality to carry DTMF in-band, thereby reducing system complexity. The scheme makes the use of an integrated DTMF detector which can classify a given frame of signal into several classes so that the DTMF encoded packet can carry a unique pattern across the air-interface to the voice decoder at AT, which is capable of identifying the pattern. Another technique pertains to the use of a message based DTMF transport between two-ATs on a separate logical channel with a unique Service Access point Identifier (SAPI) providing guaranteed service for DTMF transport in an AT-AT call.

US Patent:

6778509, Aug 17, 2004

Filed:

Nov 16, 2000

Appl. No.:

09/714788

Inventors:

Channasandra Ravishankar - Germantown MD
Anthony Noerpel - Lovettsville VA
Mahesh Kamath - New Delhi, IN
Abheek Saha - New Delhi, IN
James Hobza - Carlsbad CA

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04B 7212

US Classification:

370322, 370348

Abstract:

An approach for minimizing response times in transporting traffic over a packet radio communication system is disclosed. A terminal transmits a packet resource request message that specifies user terminal information using a contention channel according to a prescribed protocol. A gateway station receives the packet resource request message and transmits an assignment message that specifies a channel assignment based upon the user terminal information, wherein the terminal is configured to transmit the packets over a channel is based on the channel assignment. This approach has particular applicability to a satellite communication system.

US Patent:

7433336, Oct 7, 2008

Filed:

Aug 27, 2002

Appl. No.:

10/229636

Inventors:

James Hobza - Carlsbad CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04Q 7/00

US Classification:

370331, 370335, 455436

Abstract:

A system and method for providing connectivity between mobile devices and access points of a network without redundant solicitation of communication by the mobile device at each access point is described. The method involves receiving a data packet at a first access point in a control group; transmitting the data packet from the first access point to the mobile device; determining if the mobile device acknowledges receipt of the data packet; responsive to determining that the mobile device failed to acknowledge receipt of the data packet, forwarding the data packet to a second access point; and transmitting the data packet from the second access point to the mobile device.

US Patent:

7688787, Mar 30, 2010

Filed:

Oct 3, 2008

Appl. No.:

12/245446

Inventors:

James Hobza - Carlsbad CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04W 4/00

US Classification:

370331, 370335, 455436

Abstract:

A system and method for providing connectivity between mobile devices and access points of a network without redundant solicitation of communication by the mobile device at each access point is described. The method involves receiving a data packet at a first access point in a control group; transmitting the data packet from the first access point to the mobile device; determining if the mobile device acknowledges receipt of the data packet; responsive to determining that the mobile device failed to acknowledge receipt of the data packet, forwarding the data packet to a second access point; and transmitting the data packet from the second access point to the mobile device.

US Patent:

8576800, Nov 5, 2013

Filed:

Aug 9, 2011

Appl. No.:

13/206202

Inventors:

James Hobza - Carlsbad CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04W 4/00

US Classification:

370331, 370335, 455436

Abstract:

A system and method for providing connectivity between mobile devices and access points of a network without redundant solicitation of communication by the mobile device at each access point is described. The method involves receiving a data packet at a first access point in a control group; transmitting the data packet from the first access point to the mobile device; determining if the mobile device acknowledges receipt of the data packet; responsive to determining that the mobile device failed to acknowledge receipt of the data packet, forwarding the data packet to a second access point; and transmitting the data packet from the second access point to the mobile device.

US Patent:

7995535, Aug 9, 2011

Filed:

Mar 30, 2010

Appl. No.:

12/749993

Inventors:

James Hobza - Carlsbad CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H04W 4/00

US Classification:

370331, 370335, 455436

Abstract:

A system and method for providing connectivity between mobile devices and access points of a network without redundant solicitation of communication by the mobile device at each access point is described. The method involves receiving a data packet at a first access point in a control group; transmitting the data packet from the first access point to the mobile device; determining if the mobile device acknowledges receipt of the data packet; responsive to determining that the mobile device failed to acknowledge receipt of the data packet, forwarding the data packet to a second access point; and transmitting the data packet from the second access point to the mobile device.

US Patent:

49088599, Mar 13, 1990

Filed:

Jan 22, 1988

Appl. No.:

7/147167

Inventors:

Christopher J. Bennett - San Diego CA
James M. Hobza - Carlsbad CA
Ron D. Katznelson - San Diego CA
Gordon K. Walker - Carlsbad CA

Assignee:

M/A-COM Government Systems, Inc. - San Diego CA
Cable/Home Communication Corp. - San Diego CA

International Classification:

H04N 7167

US Classification:

380 10

Abstract:

A receiver interface system for enabling an operator to access different types of services in a like manner, wherein the services contain different combinations of service components received by a receiver in different portions of one or more different frequency channels, such as television channels. The system includes a plurality of separate interface channels for carrying different types of services containing different combinations of the service components; switching means for selecting a said service, wherein the switching means is coupled to the interface channels for accessing the respective interface channels in a like manner; and a decoder coupled to the receiver and the interface channels for accessing the components of said selected service received by the receiver in different portions of one or more different frequency channels to provide said selected service on the interface channel carrying the selected service. The decoder includes a service definition table defining access to different combinations of the service components by each of a plurality of the separate interface channels to thereby define access to different types of services by the separate interface channels; and a channel configuration map defining access to the frequency channels by the separate interface channels for enabling the different combinations of service components for each of the services to be accessed in accordance with the service definition table. The service definition table may include means for defining access to different service components located in the same portion of a given frequency channel at different times and/or may define access to different service components located in the following portions of the given frequency channel with respect to a television signal received over the given frequency channel: the video information interval, the horizontal blanking interval, the vertical blanking interval and the subcarrier of the given frequency.