Patents by Inventor Pietro Capretta
Pietro Capretta 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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Publication number: 20130188556Abstract: The present invention relates to a Wireless Communication System (100) for enabling parts of a wireless stack (106) to physically run on multiple wireless devices, connected together by a wireless link (110). The system (100) comprises at least one peer device (102), having at least one application module (104) for at least one embedded device (112), a data routing entity (108) for communicating with the embedded device (112) and at least a part of one or more wireless stacks (106); the embedded device being configured to execute the at least one application (104a, 104b, 104c, 104d), on establishing a connection between the embedded device (112) and the peer device (102), wherein a data routing entity (114) in the embedded device (112) is configured to communicate with the peer device (102).Type: ApplicationFiled: February 2, 2011Publication date: July 25, 2013Applicant: ST-Ericsson SAInventors: Naresh Kumar Gupta, Mayank Agarwal, Pietro Capretta, Neeraj Sharma, Manoj Kumar
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Patent number: 8185058Abstract: A device has a radio transmitter for a first radio link such as a Bluetooth link, having a coexistence controller arranged to communicate with a co-located other radio transmitter for another radio link, to enable both radio links to use potentially conflicting transmission frequencies. A link monitor monitors the first radio link, according to an output from the coexistence controller. By making the link monitor dependent on the coexistence controller, it can distinguish between transmission losses caused by the coexistence interface, and those caused by other effects, to reduce the risk of a data rate controller unnecessarily reducing a transmission rate if transmission losses caused by the coexistence control are misinterpreted as a drop in link quality.Type: GrantFiled: February 15, 2008Date of Patent: May 22, 2012Assignee: ST-Ericsson SAInventors: Pietro Capretta, Vincent Charlier
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Patent number: 8175202Abstract: A receiver is described including circuitry for deriving at least a first stream of first digitized samples from a received analog signal at a first sampling rate, circuitry for selecting a first sampling point and at least a second sampling point, a demodulator for demodulating first and second symbols from the at least first stream of samples based on the first and the at least second sampling points, and circuitry for determining a value related to a demodulation accuracy for the first and second symbols and for outputting a signal, the circuitry for selecting being adapted to alter the sampling point based on the signal. By assessing a demodulation accuracy in real time clock drift can be compensated. The demodulation accuracy can be a value related to a phase error or an error energy such as EVM or DEVM for each demodulated symbol.Type: GrantFiled: August 11, 2006Date of Patent: May 8, 2012Assignee: ST-Ericsson SAInventors: Pietro Capretta, Steven Terryn, Jean-Jacques Schmit
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Patent number: 8155250Abstract: Method and apparatus for a wireless receiver are described which derive at least a first stream of first digitized samples from a received analog signal at a first sampling rate and identify a first frequency offset based on a plurality of parallel correlations using complex reference signals which differ from each other by phase offsets. A second frequency offset is identified based on tracking a demodulation accuracy for each symbol which is demodulated from the first stream of digitized samples. These frequency offsets can be used to rotate decision areas in the demodulator. The methods and apparatus may be used in a Bluetooth receiver.Type: GrantFiled: August 11, 2006Date of Patent: April 10, 2012Assignee: ST-Ericsson SAInventors: Pietro Capretta, Steven Terryn, Jean-Jacques Schmit
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Patent number: 8014379Abstract: A circuit for processing a packet based signal received over a Bluetooth radio link has a correlator to detect at least part of the access code. A correlator controller, reconfigures the correlator according to a timing of the access code, to detect at least part of the EDR synchronization sequence, and a demodulator demodulates the payload according to the detection. The correlator has an input signal register, a buffer for a sequence of at least part of the wanted signal values, and a series of comparators arranged to compare input signal values with corresponding ones of the wanted signal values at more than one offset. By such dual use of the same correlator, the receiver can be made more cost effective.Type: GrantFiled: September 28, 2007Date of Patent: September 6, 2011Assignee: ST-Ericsson SAInventors: Pietro Capretta, Viktor Belokonskiy, Alberto Gozzi
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Patent number: 7733990Abstract: A receive path in a receiver including circuitry for deriving a first stream of first digitized samples from a received analog signal at a first sampling rate, and at least one interpolating filter in parallel with the first stream of first digitized samples for generating at least a second stream of digitized samples at the first sampling rate but offset with respect to the first stream by a fraction of a sample time period.Type: GrantFiled: August 11, 2006Date of Patent: June 8, 2010Assignee: STMicroelectronics Belgium NVInventor: Pietro Capretta
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Patent number: 7688923Abstract: A receiver having circuitry for generating first digitized samples from a received analog signal at a first sampling rate, e.g. an ADC. An interpolating filter is used to generate second digitized samples which are estimates of samples obtainable by sampling the received analog signal at a second sample rate lower than the first sampling rate, second digitized samples being output at the first sampling rate and including at least one unusable sample. A circuit is provided for generating a signal for controlling components of the receive path downstream of the interpolation filter to prevent processing of the unusable second digitized samples.Type: GrantFiled: August 11, 2006Date of Patent: March 30, 2010Assignee: STMicroelectronics Belgium NVInventor: Pietro Capretta
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Publication number: 20090086711Abstract: A circuit for processing a packet based signal received over a Bluetooth radio link has a correlator to detect at least part of the access code. A correlator controller, reconfigures the correlator according to a timing of the access code, to detect at least part of the EDR synchronization sequence, and a demodulator demodulates the payload according to the detection. The correlator has an input signal register, a buffer for a sequence of at least part of the wanted signal values, and a series of comparators arranged to compare input signal values with corresponding ones of the wanted signal values at more than one offset. By such dual use of the same correlator, the receiver can be made more cost effective.Type: ApplicationFiled: September 28, 2007Publication date: April 2, 2009Applicant: STMicroelectronics Belgium NVInventors: Pietro Capretta, Viktor Belokonskiy, Alberto Gozzi
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Patent number: 7468963Abstract: First and second wireless transceiver units operate in the same portion of the RF spectrum. An arbitration device controls when the first and second wireless transceiver units can operate. An interface connects the first transceiver unit to the arbitration device and receives requests for operation. The interface permits the transceiver unit o use one of N possible priority levels for requests. The transceiver associates a transceiver priority level to a series of packets which is chosen from a range of M possible priority levels. The transceiver unit sends a sequence of requests to operate to the arbitration device, each request in the sequence having a priority level chosen from the range of N possible priority levels. The average value of the priority levels used in the sequence depends on the associated transceiver priority level.Type: GrantFiled: June 7, 2005Date of Patent: December 23, 2008Assignee: STMicroelectronics Belgium N.V.Inventor: Pietro Capretta
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Publication number: 20080200124Abstract: A device has a radio transmitter for a first radio link such as a Bluetooth link, having a coexistence controller arranged to communicate with a co-located other radio transmitter for another radio link, to enable both radio links to use potentially conflicting transmission frequencies. A link monitor monitors the first radio link, according to an output from the coexistence controller. By making the link monitor dependent on the coexistence controller, it can distinguish between transmission losses caused by the coexistence interface, and those caused by other effects, to reduce the risk of a data rate controller unnecessarily reducing a transmission rate if transmission losses caused by the coexistence control are misinterpreted as a drop in link quality.Type: ApplicationFiled: February 15, 2008Publication date: August 21, 2008Applicant: STMicroelectronics Belgium NVInventors: Pietro Capretta, Vincent Charlier
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Publication number: 20070037511Abstract: A receiver having circuitry for generating first digitized samples from a received analog signal at a first sampling rate, e.g. an ADC. An interpolating filter is used to generate second digitized samples which are estimates of samples obtainable by sampling the received analog signal at a second sample rate lower than the first sampling rate, second digitized samples being output at the first sampling rate and including at least one unusable sample. A circuit is provided for generating a signal for controlling components of the receive path downstream of the interpolation filter to prevent processing of the unusable second digitized samples.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: STMicroelectronics Belgium NVInventor: Pietro Capretta
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Publication number: 20070037510Abstract: A receive path in a receiver including circuitry for deriving a first stream of first digitized samples from a received analog signal at a first sampling rate, and at least one interpolating filter in parallel with the first stream of first digitized samples for generating at least a second stream of digitized samples at the first sampling rate but offset with respect to the first stream by a fraction of a sample time period.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: STMicroelectronics Belgium NVInventor: Pietro Capretta
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Publication number: 20070036247Abstract: Method and apparatus for a wireless receiver are described which derive at least a first stream of first digitized samples from a received analog signal at a first sampling rate and identify a first frequency offset based on a plurality of parallel correlations using complex reference signals which differ from each other by phase offsets. A second frequency offset is identified based on tracking a demodulation accuracy for each symbol which is demodulated from the first stream of digitized samples. These frequency offsets can be used to rotate decision areas in the demodulator. The methods and apparatus may be used in a Bluetooth receiver.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: STMicroelectronics Belgium NVInventors: Pietro Capretta, Steven Terryn, Jean-Jacques Schmit
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Publication number: 20070036252Abstract: A receiver is described including circuitry for deriving at least a first stream of first digitized samples from a received analog signal at a first sampling rate, circuitry for selecting a first sampling point and at least a second sampling point, a demodulator for demodulating first and second symbols from the at least first stream of samples based on the first and the at least second sampling points, and circuitry for determining a value related to a demodulation accuracy for the first and second symbols and for outputting a signal, the circuitry for selecting being adapted to alter the sampling point based on the signal. By assessing a demodulation accuracy in real time clock drift can be compensated. The demodulation accuracy can be a value related to a phase error or an error energy such as EVM or DEVM for each demodulated symbol.Type: ApplicationFiled: August 11, 2006Publication date: February 15, 2007Applicant: STMicroelectronics Belgium NVInventors: Pietro Capretta, Steven Terryn, Jean-Jacques Schmit
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Publication number: 20050271010Abstract: First and second wireless transceiver units operate in the same portion of the RF spectrum. An arbitration device controls when the first and second wireless transceiver units can operate. An interface connects the first transceiver unit to the arbitration device and receives requests for operation. The interface permits the transceiver unit o use one of N possible priority levels for requests. The transceiver associates a transceiver priority level to a series of packets which is chosen from a range of M possible priority levels. The transceiver unit sends a sequence of requests to operate to the arbitration device, each request in the sequence having a priority level chosen from the range of N possible priority levels. The average value of the priority levels used in the sequence depends on the associated transceiver priority level.Type: ApplicationFiled: June 7, 2005Publication date: December 8, 2005Applicant: STMicroelectronics Belgium N.V.Inventor: Pietro Capretta