Patents by Inventor Nguyen Quan Tat
Nguyen Quan Tat 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).
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Patent number: 8954111Abstract: A wireless device has at least a first radio system for a first SIM channel and a second radio system for a second SIM channel. A processing system is arranged to determine whether a first of the first and second radio systems is capable of providing service for both of the first and second SIM channels currently being serviced by the first and second radio systems respectively. Servicing of the second SIM channel is transferred from the second radio system to the first radio system if it is determined that the first radio system is capable of providing service for both of first and second SIM channels. At least a part of the second radio system is shut down to reduce the power consumed by the second radio system after servicing of the second SIM channel has been transferred.Type: GrantFiled: June 28, 2011Date of Patent: February 10, 2015Assignee: Broadcom CorporationInventors: Stuart Ian Geary, Nguyen Quan Tat, Andrew Bishop, Graham Alexander Charles, Roy Skovgaard Hansen
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Patent number: 8725101Abstract: A wireless device has at least first and second radio systems. A first of the radio systems provides an indication for a second of the radio systems that it is transmitting or is about to transmit. The actual interference caused by transmissions by the first radio system to operation of the second radio system is measured, and/or the likely interference caused by transmissions by the first radio system to operation of the second radio system is estimated. The behavior of at least one of the first and second radio systems is modified in order to reduce the interference depending on the measured actual interference or estimated likely interference.Type: GrantFiled: July 6, 2011Date of Patent: May 13, 2014Assignee: Broadcom CorporationInventors: Jari Juhani Ruohonen, Nguyen Quan Tat, Sami Jutila, Roy S. Hansen
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Publication number: 20130344918Abstract: A wireless device has at least a first modem and a second modern and at least a first SIM and a second SIM. The first modem supports a different level of service than the second modem. A processing system of the wireless device selectively reconfigures the connection of the first modem and the second modem to the SIMs. In a first mapping configuration, the first SIM is connected to the first modem and the second SIM is connected to the second modem. In a second mapping configuration, the second SIM is disconnected from the second modem, and the first SIM is disconnected from the first modem and is connected to the second modem thereby to obtain a different level of service for the first SIM than in the first mapping configuration.Type: ApplicationFiled: August 29, 2013Publication date: December 26, 2013Applicant: RENESAS MOBILE CORPORATIONInventors: Nguyen Quan TAT, Stuart Ian GEARY, Jari RUOHONEN, Andrew BISHOP, Sami JUTILA, Alexander Graham CHARLES, Roy HANSEN
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Patent number: 8606216Abstract: A wireless device has two or more radio systems and SIM channels. At least a part of the first radio system can be shut down to reduce the power consumed by the device. This occurs if the first radio system is unable to obtain suitable service for the first SIM channel and the second radio system is at least one of: (i) providing at least some service on the second SIM channel for the device, and (ii) capable of searching for service for the first radio system.Type: GrantFiled: June 28, 2011Date of Patent: December 10, 2013Assignee: Renesas Mobile CorporationInventors: Stuart Ian Geary, Nguyen Quan Tat, Andrew Bishop, Graham Alexander Charles, Sami Jutila, Jari Juhani Ruohonen
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Patent number: 8576901Abstract: A modem is provided for a wireless device that is capable of providing service for at least two SIMs. The modem has at least a first set of modem components and a second set of modem components. The modem selectively reconfigures the arrangement of the plural sets of modem components. In a first configuration, the first set of modem components provides wireless connection service for a first SIM of the wireless device and the second set of modem components provides wireless connection service for a second SIM of the wireless device. This allows active wireless connections to be made on behalf of both SIMs simultaneously by the sets of modem components. In a second configuration, the first set of modem components and the second set of modem components provide wireless connection service for the first SIM.Type: GrantFiled: February 29, 2012Date of Patent: November 5, 2013Assignee: Renesas Mobile CorporationInventors: Nguyen Quan Tat, Stuart Ian Geary, Jari Juhani Ruohonen, Andrew Bishop, Sami Jutila, Alexander Graham Charles, Roy Hansen
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Patent number: 8554167Abstract: A wireless device has two or more radio systems and SIM channels. At least a part of the first radio system can be shut down to reduce the power consumed by the device. This occurs if the first radio system is unable to obtain suitable service for the first SIM channel and the second radio system is at least one of (i) providing at least some service on the second SIM channel for the device, and (ii) capable of searching for service for the first radio system.Type: GrantFiled: January 11, 2012Date of Patent: October 8, 2013Assignee: Renesas Mobile CorporationInventors: Stuart Ian Geary, Nguyen Quan Tat, Andrew Bishop, Graham Alexander Charles, Sami Jutila, Jari Juhani Ruohonen
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Patent number: 8527006Abstract: A wireless device has at least a first modem and a second modem and at least a first SIM and a second SIM. The first modem supports a different level of service than the second modem. A processing system of the wireless device selectively reconfigures the connection of the first modem and the second modem to the SIMs. In a first mapping configuration, the first SIM is connected to the first modem and the second SIM is connected to the second modem. In a second mapping configuration, the second SIM is disconnected from the second modem, and the first SIM is disconnected from the first modem and is connected to the second modem thereby to obtain a different level of service for the first SIM than in the first mapping configuration.Type: GrantFiled: October 31, 2011Date of Patent: September 3, 2013Assignee: Renesas Mobile CorporationInventors: Nguyen Quan Tat, Stuart Ian Geary, Jari Ruohonen, Andrew Bishop, Sami Jutila, Alexander Graham Charles, Roy Hansen
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Publication number: 20130156081Abstract: A modem is provided for a wireless device that is capable of providing service for at least two SIMs. The modem has at least a first set of modem components and a second set of modem components. The modem selectively reconfigures the arrangement of the plural sets of modem components. In a first configuration, the first set of modem components provides wireless connection service for a first SIM of the wireless device and the second set of modem components provides wireless connection service for a second SIM of the wireless device. This allows active wireless connections to be made on behalf of both SIMs simultaneously by the sets of modem components. In a second configuration, the first set of modem components and the second set of modem components provide wireless connection service for the first SIM.Type: ApplicationFiled: February 29, 2012Publication date: June 20, 2013Applicant: RENESAS MOBILE CORPORATIONInventors: Nguyen Quan TAT, Stuart Ian GEARY, Jari Juhani RUOHONEN, Andrew BISHOP, Sami JUTILA, Alexander Graham CHARLES, Roy Hansen
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Publication number: 20130109436Abstract: A wireless device has at least a first modem and a second modem and at least a first SIM and a second SIM. The first modem supports a different level of service than the second modem. A processing system of the wireless device selectively reconfigures the connection of the first modem and the second modem to the SIMs. In a first mapping configuration, the first SIM is connected to the first modem and the second SIM is connected to the second modem. In a second mapping configuration, the second SIM is disconnected from the second modem, and the first SIM is disconnected from the first modem and is connected to the second modem thereby to obtain a different level of service for the first SIM than in the first mapping configuration.Type: ApplicationFiled: October 31, 2011Publication date: May 2, 2013Applicant: RENESAS MOBILE CORPORATIONInventors: Nguyen Quan TAT, Stuart Ian GEARY, Jari RUOHONEN, Andrew BISHOP, Sami JUTILA, Alexander Graham CHARLES, Roy Hansen
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Publication number: 20130012135Abstract: A wireless device has at least first and second radio systems. A first of the radio systems provides an indication for a second of the radio systems that it is transmitting or is about to transmit. The actual interference caused by transmissions by the first radio system to operation of the second radio system is measured, and/or the likely interference caused by transmissions by the first radio system to operation of the second radio system is estimated. The behaviour of at least one of the first and second radio systems is modified in order to reduce the interference depending on the measured actual interference or estimated likely interference.Type: ApplicationFiled: July 6, 2011Publication date: January 10, 2013Inventors: Jari Juhani Ruohonen, Nguyen Quan Tat, Sami Jutila, Roy S. Hansen
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Publication number: 20130005290Abstract: A wireless device has two or more radio systems and SIM channels. At least a part of the first radio system can be shut down to reduce the power consumed by the device. This occurs if the first radio system is unable to obtain suitable service for the first SIM channel and the second radio system is at least one of: (i) providing at least some service on the second SIM channel for the device, and (ii) capable of searching for service for the first radio system.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Inventors: Stuart Ian Geary, Nguyen Quan Tat, Andrew Bishop, Graham Alexander Charles, Sami Jutila, Jari Juhani Ruohonen
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Publication number: 20130005394Abstract: A wireless device has at least a first radio system for a first SIM channel and a second radio system for a second SIM channel. A processing system is arranged to determine whether a first of the first and second radio systems is capable of providing service for both of the first and second SIM channels currently being serviced by the first and second radio systems respectively. Servicing of the second SIM channel is transferred from the second radio system to the first radio system if it is determined that the first radio system is capable of providing service for both of first and second SIM channels. At least a part of the second radio system is shut down to reduce the power consumed by the second radio system after servicing of the second SIM channel has been transferred.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Inventors: Stuart Ian Geary, Nguyen Quan Tat, Roy Skovgaard Hansen, Andrew Bishop, Graham Alexander Charles
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Publication number: 20130005291Abstract: A wireless device has two or more radio systems and SIM channels. At least a part of the first radio system can be shut down to reduce the power consumed by the device. This occurs if the first radio system is unable to obtain suitable service for the first SIM channel and the second radio system is at least one of (i) providing at least some service on the second SIM channel for the device, and (ii) capable of searching for service for the first radio system.Type: ApplicationFiled: January 11, 2012Publication date: January 3, 2013Applicant: RENESAS MOBILE CORPORATIONInventors: Stuart Ian Geary, Nguyen Quan Tat, Andrew Bishop, Graham Alexander Charles, Sami Jutila, Jari Juhani Ruohonen
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Patent number: 6674735Abstract: A radio handset and method of operation of same for communication on a selected channel of a radio telephone system in which information is transmitted in bursts, each burst having respective portions independently capable of indicating burst errors. The handset is operable to detect sliding collisions by comparing the distribution of errors over error indicating portions of a received burst.Type: GrantFiled: December 1, 1999Date of Patent: January 6, 2004Assignee: Nokia Mobile Phones LimitedInventors: Robert Stanley Saunders, Nguyen Quan Tat
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Patent number: 6631264Abstract: An apparatus and method for reducing battery consumption in a radio telephone by scanning for additional local base stations when a currently monitored signal from a local base station is deteriorating.Type: GrantFiled: June 17, 1999Date of Patent: October 7, 2003Assignee: Nokia Mobile Phones, Ltd.Inventors: Torsten Leickel, Nguyen Quan Tat
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Patent number: 6577611Abstract: A portable radio telephone (5) communicates with base stations (1, 2) in a digital radio telephone system, such as DECT, employing TDMA transmission. The portable radio telephone is programmed with an algorithm which is operative to select a communication channel by storing a blind slot mask (7) representative of the time slots in each frame which are excluded, either by virtue of being occupied by the base station or by the portable radio telephone itself. Hence, any channel attempted and failed in an occupied time slot is excluded and marked blind in the blind slot mask. Further, the algorithm is operative to check the time slots for availability in a predetermined sequence which corresponds to the temporal sequence of the slots (or the reverse thereof) to promote orderly filling of the time slots at the base stations.Type: GrantFiled: May 27, 1998Date of Patent: June 10, 2003Assignee: Nokia Mobile Phones LimitedInventors: Nguyen Quan Tat, Robert Stanley Saunders
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Patent number: 6310867Abstract: A portable radio telephone (5) communicates with base stations (1, 2) in a digital radio telephone system, such as DECT, employing TDMA transmission. The portable radio telephone is programmed with an algorithm which is operative to select a communication channel by storing a blind slot mask (7) representative of the time slots in each frame which are excluded. The algorithm is operative to check the time slots for availability in a predetermined sequence which corresponds to the temporal sequence of the slots (or the reverse thereof) to promote orderly filling of the time slots at the base stations.Type: GrantFiled: January 19, 1999Date of Patent: October 30, 2001Assignee: Nokia Mobile Phones LimitedInventors: Nguyen Quan Tat, Robert Stanley Saunders
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Patent number: 6298225Abstract: A radio receiver operable for communication in a radio system in which information is transmitted on respective channels in bursts. Each burst has a field for enabling the radio receiver to synchronise therewith. The radio receiver has an adjustable internal clock for timing receiving signals. Adjustment of the internal clock can be suspended if an error field in a received signal indicates that a signal received is not a valid burst.Type: GrantFiled: January 21, 1997Date of Patent: October 2, 2001Assignee: Nokia Mobile Phones LimitedInventors: Nguyen Quan Tat, Alan Dowell
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Patent number: 6219549Abstract: A method and apparatus for a handset are provided to select a channel for monitoring a system operating under a cellular radio telephone protocol supported by repetitive cellular radio systems. A base station transmits a signal packet having time slots and fields, which are recognizable by the handset. There is a selection of a carrier of a channel to scan in order to detect the packet. Upon finding a specified data field in the packet, there is a checking of a primary access right identity (PARI). Thereafter, the system may be found in order for the handset to lock onto the system, and, in the event that the system is not found, the procedure continues with a second pass which begins with a recording of received signal strength and secondary access right identity (SARI) information. In the second pass, there is again a selection of a carrier for scanning, this being obtained by use of information of the first pass.Type: GrantFiled: July 24, 1996Date of Patent: April 17, 2001Assignee: Nokia Mobile Phones LimitedInventor: Nguyen Quan Tat
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Patent number: 6122519Abstract: A method and apparatus for detecting additional base stations in a cellular radio telephone system in which communication channels are opened with a selected base station on a selected channel.Type: GrantFiled: September 29, 1998Date of Patent: September 19, 2000Assignee: Nokia Mobile Phones LimitedInventor: Nguyen Quan Tat