Patents by Inventor Kambiz Shoarinejad
Kambiz Shoarinejad 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: 8019379Abstract: A transmitter and receiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module coupled to generate outbound non-amplitude modulated symbols from first outbound data, to generate outbound amplitude modulated symbols from second outbound data, to generate first inbound data from inbound non-amplitude modulated symbols, and to generate second inbound data from inbound amplitude modulated symbols, a combiner coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal and a splitter coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.Type: GrantFiled: April 27, 2009Date of Patent: September 13, 2011Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Patent number: 7994975Abstract: A global navigation satellite system (GNSS) enabled mobile device may be operable to monitor and determine counts at which autoblank signals are asserted over time intervals corresponding to consecutive time windows during the RF interference mitigation process using autoblanking. The GNSS enabled mobile device may be operable to disable the generation of a blank signal when the count may be greater than a particular count threshold at the end of the time window. The GNSS enabled mobile device may be operable to enable the generation of a blank signal when the count may be less than or equal to a particular count threshold at the end of the time window. The blank signals may be used to blank the processing of the received GNSS signals.Type: GrantFiled: October 6, 2009Date of Patent: August 9, 2011Assignee: Broadcom CorporationInventors: Charles Abraham, Kambiz Shoarinejad, Jared Welz
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Patent number: 7991080Abstract: A radio frequency identification (RFID) decoding subsystem includes a pre-decode module and a decode module. The pre-decode module is coupled to process down-converted RFID signals into pre-decoded baseband data. The decode module is coupled to: enable a counting process based on the pre-decoded baseband data to produce a count resultant; and compare the count resultant with a threshold at a data bit interval to produce decoded RFID data.Type: GrantFiled: July 20, 2006Date of Patent: August 2, 2011Assignee: Broadcom CorporationInventors: Kambiz Shoarinejad, Ahmadreza (Reza) Rofougaran
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Patent number: 7952481Abstract: An RFID system includes an RFID tag, an RFID reader, and a server. The RFID tag communicates to the server via encrypted information. The information may be encrypted with synchronized encryption keys. In this manner, the reader need not decrypt the information from the RFID tag. The effectiveness of malicious readers is thereby reduced, resulting in improved RFID tag security.Type: GrantFiled: January 7, 2009Date of Patent: May 31, 2011Assignee: Radiofy LLCInventors: Kambiz Shoarinejad, Maryam Soltan
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Publication number: 20110080319Abstract: A global navigation satellite system (GNSS) enabled mobile device may be operable to monitor and determine counts at which autoblank signals are asserted over time intervals corresponding to consecutive time windows during the RF interference mitigation process using autoblanking. The GNSS enabled mobile device may be operable to disable the generation of a blank signal when the count may be greater than a particular count threshold at the end of the time window. The GNSS enabled mobile device may be operable to enable the generation of a blank signal when the count may be less than or equal to a particular count threshold at the end of the time window. The blank signals may be used to blank the processing of the received GNSS signals.Type: ApplicationFiled: October 6, 2009Publication date: April 7, 2011Inventors: Charles Abraham, Kambiz Shoarinejad, Jared Welz
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Patent number: 7890056Abstract: A highly integrated and low-cost reader for a radio frequency identification (RFID) system is realized by providing a transmitter operable to generate an outbound radio frequency (RF) signal and a receiver operable to receive an inbound RF signal having a frequency similar to a frequency of the outbound RF signal on a single integrated circuit. Since the inbound RF signal may include not only a modulated RF signal produced by an RFID tag responsive to the outbound RF signal, but also a blocking signal corresponding to the outbound RF signal, the receiver additionally includes a block cancellation module operable to substantially cancel the blocking signal from the inbound RF signal using the outbound RF signal and to substantially pass the modulated RF signal before down-conversion of the modulated RF signal.Type: GrantFiled: December 31, 2009Date of Patent: February 15, 2011Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Publication number: 20110018762Abstract: A GNSS enabled mobile device is operable to receive two or more system clocks via from a plurality of associated non-GNSS communication networks, for example, GSM, GPRS, UMTS, EDGE, EGPRS, LTE, WiMAX, high-speed wireless LAN (WiFi), and/or short-range wireless (Bluetooth). The received system clocks are used to calibrate an local GNSS clock for the GNSS enabled mobile device. The GNSS enabled mobile device communicates the received system clocks with an associated GNSS receiver without using an external circuitry. The GNSS receiver selects a calibration clock from the received system clocks based on the status (active or inactive) of corresponding system clocks. An active system clock is selected as the calibration clock. The associated local GNSS clock is calibrated by removing clock errors from the associated local GNSS clock using the selected calibration clock. The calibrated local GNSS clock is used for detecting GNSS signals and/or processing detected GNSS signals.Type: ApplicationFiled: July 24, 2009Publication date: January 27, 2011Inventors: John Walley, Charles Abraham, Kambiz Shoarinejad
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Publication number: 20110018761Abstract: A multi-standard single chip integrated within a multi-standard mobile device concurrently receives multi-standard radio frequency signals by corresponding two or more integrated radios. The multi-standard single chip generates full GNSS measurement comprising pseudo-range information using the received radio frequency signals. The multi-standard single chip comprises a GNSS radio and multiple non-GNSS radios such as Bluetooth. The full GNSS measurement is generated using GNSS radio frequency signals received by the integrated GNSS radio and communicated over, for example, Bluetooth radio. GNSS satellite reference information embedded in radio frequency signals received by the integrated non-GNSS radios is extracted to assist the full GNSS measurement. A full GNSS navigation solution for the multi-standard mobile device is generated internally to and/or externally to the multi-standard single chip depending on the location of a navigation engine.Type: ApplicationFiled: July 24, 2009Publication date: January 27, 2011Inventors: John Walley, Charles Abraham, Evan McCarthy, Kambiz Shoarinejad
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Patent number: 7856247Abstract: An integrated RFID reader and wireless communication device is realized by a radio frequency (RF) front end operable, in a first mode, to generate a radio frequency identification system (RFID) outbound radio frequency (RF) signal, to receive an RFID inbound RF signal responsive to the RFID outbound RF signal and to convert the RFID inbound RF signal to an RFID near baseband signal, and operable in a second mode, to generate a transceiver outbound radio frequency (RF) signal, to receive a transceiver inbound RF signal and to convert the transceiver inbound RF signal to a transceiver near baseband signal.Type: GrantFiled: December 30, 2008Date of Patent: December 21, 2010Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Publication number: 20100295663Abstract: Embodiments of the present invention include methods and systems for utilizing backscattering techniques in wireless applications. In one embodiment, the present invention includes a method of wirelessly controlling a device comprising, in a first electronic device, generating a first command, modulating the first command, and transmitting the modulated first command over a first communication channel using an RF signal. In a second electronic device, the RF signal is received over the first communication channel, and the modulated first command is demodulated and executed. In one embodiment, the second electronic device absorbs and uses at least some power from the RF signal transmitted by the first electronic device. In one embodiments, data generated by the second device may be transmitted back to the first electronic device using backscattering.Type: ApplicationFiled: August 5, 2010Publication date: November 25, 2010Applicant: Radiofy LLC, a California Limited Liability CompanyInventors: Kambiz Shoarinejad, Maryam Soltan
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Patent number: 7734994Abstract: A radio frequency identification (RFID) decoding subsystem includes a pre-decode module and a decode module. The pre-decode module is coupled to process down-converted RFID signals into at least one of pre-decoded baseband data and corresponding decoding information. The decode module is coupled to process the pre-decoded baseband data into decoded RFID data, where the processing of the pre-decoded baseband data is based on the corresponding decoding information when the corresponding decoding information is produced by the pre-decoder module.Type: GrantFiled: July 20, 2006Date of Patent: June 8, 2010Assignee: Broadcom CompanyInventors: Kambiz Shoarinejad, Ahmadreza (Reza) Rofougaran
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Publication number: 20100099355Abstract: A highly integrated and low-cost reader for a radio frequency identification (RFID) system is realized by providing a transmitter operable to generate an outbound radio frequency (RF) signal and a receiver operable to receive an inbound RF signal having a frequency similar to a frequency of the outbound RF signal on a single integrated circuit. Since the inbound RF signal may include not only a modulated RF signal produced by an RFID tag responsive to the outbound RF signal, but also a blocking signal corresponding to the outbound RF signal, the receiver additionally includes a block cancellation module operable to substantially cancel the blocking signal from the inbound RF signal using the outbound RF signal and to substantially pass the modulated RF signal before down-conversion of the modulated RF signal.Type: ApplicationFiled: December 31, 2009Publication date: April 22, 2010Applicant: BROADCOM CORPORATIONInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Patent number: 7664461Abstract: A highly integrated and low-cost reader for a radio frequency identification (RFID) system is realized by providing a transmitter operable to generate an outbound radio frequency (RF) signal and a receiver operable to receive an inbound RF signal having a frequency similar to a frequency of the outbound RF signal on a single integrated circuit. Since the inbound RF signal may include not only a modulated RF signal produced by an RFID tag responsive to the outbound RF signal, but also a blocking signal corresponding to the outbound RF signal, the receiver additionally includes a block cancellation module operable to substantially cancel the blocking signal from the inbound RF signal using the outbound RF signal and to substantially pass the modulated RF signal before down-conversion of the modulated RF signal.Type: GrantFiled: March 16, 2006Date of Patent: February 16, 2010Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Publication number: 20100007466Abstract: An RFID system includes an RFID tag, an RFID reader, and a server. The RFID tag communicates to the server via encrypted information. The information may be encrypted with synchronized encryption keys. In this manner, the reader need not decrypt the information from the RFID tag. The effectiveness of malicious readers is thereby reduced, resulting in improved RFID tag security.Type: ApplicationFiled: January 7, 2009Publication date: January 14, 2010Applicant: Radiofy LLCInventors: Kambiz Shoarinejad, Maryam Soltan
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Publication number: 20090302966Abstract: Methods and systems for optimal frequency planning for an integrated communication system with multiple receivers may include adjusting a center frequency of a low IF signal to reduce interference by a second order interference signal. The center frequency may be adjusted to avoid high power portions of the second order interference signal. The interference level corresponding to a center frequency may be determined by, for example, a SNR of the low IF signal, or by determining a BER for the low IF signal. The center frequency of the low IF signal may be dynamically adjusted to keep second order interference level at an acceptable level. Adjusting the center frequency of the low IF signal may also comprise keeping the low IF signal from being blocked by a DC component of the second order interference signal.Type: ApplicationFiled: June 5, 2008Publication date: December 10, 2009Inventors: Brima Ibrahim, Alireza Zofaghari, Steven Hall, Kambiz Shoarinejad, Bojko Marholev
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Patent number: 7623606Abstract: A method for decoding bi-phase encoded data begins by interpreting a first bit boundary of a bit of the bi-phase encoded data to produce a first boundary value. The method continues by interpreting a second bit boundary of the bit of the bi-phase encoded data to produce a second boundary value. The method continues by comparing the first boundary value to the second boundary value to produce a decoded bit.Type: GrantFiled: January 26, 2006Date of Patent: November 24, 2009Assignee: Broadcom CorporationInventors: Kambiz Shoarinejad, Ahmadreza (Reza) Rofougaran
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Publication number: 20090225907Abstract: A method for decoding bi-phase encoded data begins by interpreting a first bit boundary of a bit of the bi-phase encoded data to produce a first boundary value. The method continues by interpreting a second bit boundary of the bit of the bi-phase encoded data to produce a second boundary value. The method continues by comparing the first boundary value to the second boundary value to produce a decoded bit.Type: ApplicationFiled: May 13, 2009Publication date: September 10, 2009Applicant: BROADCOM CORPORATIONInventors: KAMBIZ SHOARINEJAD, AHMADREZA (REZA) ROFOUGARAN
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Publication number: 20090207025Abstract: A transmitter and receiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module coupled to generate outbound non-amplitude modulated symbols from first outbound data, to generate outbound amplitude modulated symbols from second outbound data, to generate first inbound data from inbound non-amplitude modulated symbols, and to generate second inbound data from inbound amplitude modulated symbols, a combiner coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal and a splitter coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.Type: ApplicationFiled: April 27, 2009Publication date: August 20, 2009Applicant: BROADCOM CORPORATIONInventors: AHMADREZA (REZA) ROFOUGARAN, KAMBIZ SHOARINEJAD
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Patent number: 7532908Abstract: A transceiver for combining RFID amplitude-modulated data with wireless phase-modulated data is realized by a processing module operably coupled to generate outbound non-amplitude modulated symbols from first outbound data, to generate outbound amplitude modulated symbols from second outbound data, to generate first inbound data from inbound non-amplitude modulated symbols, and to generate second inbound data from inbound amplitude modulated symbols, a combiner operably coupled to modulate the amplitude modulated symbols onto a signal carrying the non-amplitude modulated symbols to produce a combined outbound RF signal and a splitter operably coupled to convert a combined inbound RF signal into inbound non-amplitude modulated symbols and into inbound amplitude modulated symbols.Type: GrantFiled: March 16, 2006Date of Patent: May 12, 2009Assignee: Broadcom CorporationInventors: Ahmadreza (Reza) Rofougaran, Kambiz Shoarinejad
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Publication number: 20090111516Abstract: An integrated RFID reader and wireless communication device is realized by a radio frequency (RF) front end operable, in a first mode, to generate a radio frequency identification system (RFID) outbound radio frequency (RF) signal, to receive an RFID inbound RF signal responsive to the RFID outbound RF signal and to convert the RFID inbound RF signal to an RFID near baseband signal, and operable in a second mode, to generate a transceiver outbound radio frequency (RF) signal, to receive a transceiver inbound RF signal and to convert the transceiver inbound RF signal to a transceiver near baseband signal.Type: ApplicationFiled: December 30, 2008Publication date: April 30, 2009Applicant: BROADCOM CORPORATIONInventors: AHMADREZA (REZA) ROFOUGARAN, KAMBIZ SHOARINEJAD