Patents Assigned to Innovision Limited
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Publication number: 20140127998Abstract: A communications device is disclosed that includes a united integrated circuit card (UICC) that provides a single wire protocol (SWP) current signal to a near field communications (NFC) device. The SWP current signal is filtered by a filter to remove noise from the SWP current signal. The filter is precharged by a reference voltage when the SWP current signal is in a low state and then filters the SWP current signal when the SWP current signal is in a high state. A switching network provides the filter with the reference voltage to precharge when the SWP is current signal is in the low state and then provides the filter with the SWP current signal to filter when the SWP current signal is in the high state.Type: ApplicationFiled: January 13, 2014Publication date: May 8, 2014Applicant: Broadcom Innovision LimitedInventor: David John MILES
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Patent number: 8670710Abstract: A communications device is disclosed that includes a united integrated circuit card (UICC) that provides a single wire protocol (SWP) current signal to a near field communications (NFC) device. The SWP current signal is filtered by a filter to remove noise from the SWP current signal. The filter is precharged by a reference voltage when the SWP current signal is in a low state and then filters the SWP current signal when the SWP current signal is in a high state. A switching network provides the filter with the reference voltage to precharge when the SWP is current signal is in the low state and then provides the filter with the SWP current signal to filter when the SWP current signal is in the high state.Type: GrantFiled: September 7, 2010Date of Patent: March 11, 2014Assignee: Broadcom Innovision LimitedInventor: David John Miles
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Patent number: 8655273Abstract: An NFC communicator has a coupler operable to couple with a coupler of a near field RF communicator in near field range to enable communication of data between the communicators by modulation of a magnetic field, a demodulator to extract modulation from a modulated signal coupled to the coupler, and a modulator to modulate an RF signal in accordance with data to be communicated by the NFC communicator. The NFC communicator communicates with a data source and is arranged to at least one of provide timing data to the data source and receive timing data from the data source.Type: GrantFiled: December 7, 2007Date of Patent: February 18, 2014Assignee: Broadcom Innovision LimitedInventor: Heikki Huomo
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Publication number: 20140036395Abstract: A near field RF communicator has an inductive coupler to enable inductive coupling with a magnetic field of an RF signal; a rectifier to rectify an AC voltage derived from an RF signal inductively coupled to the inductive coupler; and a regulator to regulate a voltage derived from an RF signal inductively coupled to the inductive coupler, the regulator having a voltage-controlled impedance and a regulator controller to provide a control voltage for the voltage controlled impedance and to vary the control voltage in dependence upon a current flowing through the voltage controlled impedance. To prevent the voltage regulator from drawing excess current and energy from an RF field in which the communicator is present the voltage regulator is controlled to provide a chosen impedance characteristic.Type: ApplicationFiled: October 11, 2013Publication date: February 6, 2014Applicant: Broadcom Innovision LimitedInventor: Robin WILSON
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Publication number: 20140038520Abstract: A near field RF communicator has an antenna circuit to couple with the H field of an RF magnetic field and a power supply deriver to derive a rectified auxiliary power supply from the received magnetic field. Rectification may be performed using an actively switched rectifier having a passive mode of operation. A sub regulation system is provided to regulate the auxiliary power supply to inhibit the possibility of temporally varying power requirements of the near field RF communicator or its host causing an apparent load modulation of a signal that is transmitted or received by the communicator.Type: ApplicationFiled: October 1, 2013Publication date: February 6, 2014Applicant: Broadcom Innovision LimitedInventor: Paul BUTLER
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Publication number: 20130344807Abstract: A communications device configured to couple with a near field RF communicator, in near field range, to enable communication of data by modulation of a magnetic field. The communications device also including a secure element, having a plurality of memory areas with differing levels of access, configured to provide secure data storage for transaction data, wherein the levels of access are differentiated by a degree to which the plurality of memory areas are programmable, writable and modifiable. Further, the communications device includes a controller configured to read the transaction data from the at least one secure element, and to cause a modulator to modulate the RF signal in accordance with transaction data read from the secure element so as to communicate the read transaction data to the near field RF communicator as proof of the transaction to enable an action related to the transaction to be carried out.Type: ApplicationFiled: August 23, 2013Publication date: December 26, 2013Applicant: Broadcom Innovision LimitedInventors: Heikki HUOMO, Ian Keen, Marc Borrett
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Patent number: 8588682Abstract: A near field RF communicator has an inductive coupler (223) to enable inductive coupling with a magnetic field of an RF signal; a rectifier (213,214,215,216) to rectify an AC voltage derived from an RF signal inductively coupled to the inductive coupler (223); and a regulator (209,210,211,220,221,900) to regulate a voltage derived from an RF signal inductively coupled to the inductive coupler, the regulator having a voltage-controlled impedance (210, 211) and a regulator controller (209) to provide a control voltage for the voltage controlled impedance and to vary the control voltage in dependence upon a current flowing through the voltage controlled impedance (210, 211). To prevent the voltage regulator from drawing excess current and energy from an RF field in which the communicator is present the voltage regulator is controlled to provide a chosen impedance characteristic.Type: GrantFiled: November 14, 2008Date of Patent: November 19, 2013Assignee: Broadcom Innovision LimitedInventor: Robin Wilson
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Patent number: 8565675Abstract: A near field RF communicator has an antenna circuit (120) to receive a modulated radio frequency signal by inductive coupling and demodulation circuitry (130 or 131) to extract the modulation from a received modulated radio frequency signal inductively coupled to the antenna circuit. The demodulation circuitry has a virtual earth input comprising a current mirror. The demodulation circuitry may be formed by an amplifier (115 or 116) and a demodulator (114) coupled to an output of the amplifier. The amplifier may be a single input amplifier (116) coupled to an output of the antenna circuit or may be a differential amplifier (115) having first and second inputs to receive the modulated radio frequency signal from first and second outputs of the antenna circuit, with each amplifier input providing a virtual earth input.Type: GrantFiled: November 27, 2007Date of Patent: October 22, 2013Assignee: Broadcom Innovision LimitedInventors: Joakim Bangs, David Miles
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Patent number: 8558604Abstract: An in-phase, quadrature phase (IQ) mixer for a near field communications (NFC) device is disclosed that includes a signal provider that provides an in-phase (I) mixing signal and a quadrature phase (Q) mixing signal so that the period of the I mixing signal is equal to a period for the Q mixing signal. A controller is configured to control the signal provider so that the average of the I mixing signal over two periods is minimized and the average of the Q mixing signal over two periods is also minimized. The controller is also configured to control the signal provider so that the average propagation delay for the I mixing signal and the Q mixing signal is minimized individually and relative to each other.Type: GrantFiled: February 25, 2010Date of Patent: October 15, 2013Assignee: Broadcom Innovision LimitedInventor: Alastair Lefley
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Patent number: 8559872Abstract: A near field RF communicator has an antenna circuit (102) to couple with the H field of an RF magnetic field and a power supply deriver (301) to derive a rectified auxiliary power supply from the received magnetic field. Rectification may be performed using an actively switched rectifier (502) having a passive mode of operation. A sub regulation system (506) is provided to regulate the auxiliary power supply to inhibit the possibility of temporally varying power requirements of the near field RF communicator or its host causing an apparent load modulation of a signal that is transmitted or received by the communicator.Type: GrantFiled: January 23, 2009Date of Patent: October 15, 2013Assignee: Broadcom Innovision LimitedInventor: Paul Butler
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Patent number: 8538332Abstract: A communications device has a NFC communicator (15) having a coupler (17) to couple with a coupler of a near field RF communicator in near field range to enable communication of data between the communicators by modulation of a magnetic field, a demodulator (42) to extract modulation from a modulated signal coupled to the coupler and a modulator (40) to modulate an RF signal in accordance with data to be communicated by the NFC communicator. The device also has at least one secure element (30; 31) separate from the near field RF communicator (15) to provide secure data storage for transaction data representing or relating to a transaction.Type: GrantFiled: December 15, 2006Date of Patent: September 17, 2013Assignee: Broadcom Innovision LimitedInventors: Heikki Huomo, Ian Keen, Marc Borrett
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Publication number: 20130217326Abstract: A NFC communicator or NFC communications enabled device has a data store to store data, a coupler to couple inductively with the magnetic field of a radio frequency signal and a signal generator to supply a radio frequency signal to the coupler. A modulator is provided to modulate a radio frequency signal in accordance with data and a demodulator is provided to extract data from a modulated radio frequency signal inductively coupled to the coupler. A controller enables the NFC communicator or NFC communications enabled device both to initiate near field radio frequency communication with another near field RF communicator and to respond to near field radio frequency communication initiated by another near field RF communicator. The NFC communicator or NFC communications enabled device also has a power deriver that derives power from a radio frequency signal inductively coupled to the coupler to charge a chargeable power supply.Type: ApplicationFiled: March 28, 2013Publication date: August 22, 2013Applicant: Broadcom Innovision LimitedInventor: Broadcom Innovision Limited
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Patent number: 8503931Abstract: An NFC-enabled device configured at least in part as an integrated circuit, the integrated circuit including a controller and a plurality of capacitors. The controller is operable to control one or more of the plurality of capacitors to vary an operating parameter of the NFC-enabled device.Type: GrantFiled: June 27, 2012Date of Patent: August 6, 2013Assignee: Broadcom Innovision LimitedInventor: Robin Wilson
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Publication number: 20130189926Abstract: A near field RF communicator has an inductive coupler to couple inductively to an H field of an RF signal from another near field RF communicator in near field range to provide a received signal, a demodulator coupled to extract any modulation from a source signal representing a received RF signal to provide an extracted modulation signal; and a controller coupled to receive an extracted modulation signal from the demodulator. The demodulator has a sampler to sample the source signal in sampling periods and to compare signal samples with at least one of other signal samples and a clock or reference signal to remove or reject the carrier of the received RF signal and to extract the modulation.Type: ApplicationFiled: March 12, 2013Publication date: July 25, 2013Applicant: Broadcom Innovision LimitedInventor: Broadcom Innovision Limited
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Patent number: 8489020Abstract: An NFC communicator has an antenna circuit to enable inductive coupling, via an RF H field, of the NFC communicator and another near field RF communicator in near field range. The antenna circuit has an antenna element coupled in parallel with a first capacitor to form a parallel LC circuit. The antenna element has an antenna coil in series with a second capacitor to reduce the voltage to which circuitry of the NFC communicator is subjected by a received RF H field. Alternatively or additionally, receive circuitry of the NFC communicator may be coupled to only a proportion of the antenna coil to reduce the voltage to which circuitry of the NFC communicator is subjected by a received RF H field.Type: GrantFiled: March 20, 2008Date of Patent: July 16, 2013Assignee: Broadcom Innovision LimitedInventors: Joakim Bangs, Robin Wilson, Franz Fuchs
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Patent number: 6345106Abstract: A technique for generating motion vectors in video and film signal processing uses constraint equation based motion estimation. Simplifications of the processing and hardware are made possible by generating motion vectors based on the normalized constraint equation. The temporal and spatial image gradients are calculated using temporal and spatial differentiators (16, 17, 18). An angle (&thgr;) corresponding to the orientation of the spatial image gradient vector and the motion speed (vn) in the direction of the vector are calculated using apparatus including a rectangular to polar coordinate converter (32). &thgr; and vn are the parameters of the normalized constraint equation.Type: GrantFiled: September 14, 1998Date of Patent: February 5, 2002Assignee: Innovision LimitedInventor: Timothy John Borer
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Patent number: 6342850Abstract: A high speed analog-to-digital converter utilizes a fine resolution ADC to digitize the low band component of an analog video signal to produce a fine resolution signal and a coarse resolution ADC to digitize the full spectrum of the analog signal and produce a coarse resolution signal. The coarse resolution signal is subtracted from the fine resolution signal to generate a summed signal containing a quantization error, which is filtered through a low pass digital filter to filter out the high band component and pass the quantization error. The filter output is summed with the coarse resolution signal to restore the fine resolution of the low band, producing a digital output signal that has a resolution suitable for high definition applications.Type: GrantFiled: September 12, 2000Date of Patent: January 29, 2002Assignee: Innovision LimitedInventors: Timothy John Borer, Gary Bryan Wordsworth, David Christopher Clarkson
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Patent number: 6069670Abstract: A video processing method and system for motion compensated filtering of interlaced television signals comprising a motion estimation device for producing motion vectors corresponding to each output sampling site, a vector processor generating a set of input coordinates for each output sampling site depending on its corresponding motion vector, a data store in memory for storing input pixel values and providing a variable delay, a plurality of multipliers and corresponding coefficient stores, and an adder to sum the partial result from each multiplier, the multipliers multiply an input pixel value, selected from the data store depending on part of the input coordinate, by a coefficient selected from the coefficient store depending on another part of the input coordinate, the filter aperture (set of filter coefficients) is selected depending on the vertical velocity component of the motion vector supplied by the motion estimation device.Type: GrantFiled: October 24, 1997Date of Patent: May 30, 2000Assignee: Innovision LimitedInventor: Timothy Borer
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Patent number: 5818518Abstract: An apparatus for use in a method for scanning an image on a film and generating a video signal therefrom. The apparatus having a signal processor (10) receiving a plurality of input raster lines representing a film image, and a control unit (11) having controls (14) operating on said signal processor, whereby the number of the input raster lines used by the signal processor in the active raster to generate said output signal is variable. A signal representing a sequentially scanned image is supplied to filter (12) which performs an anti-aliasing and a decimation process. The amount of oversampling can be varied depending on various factors, such as film speed, and degree of anti-aliasing and aperture correction so as to optimize performance and, in CRT-based systems so as to maintain the size of the raster on the face of the CRT above a predetermined minimum.Type: GrantFiled: September 30, 1996Date of Patent: October 6, 1998Assignee: Innovision LimitedInventors: Gary Bryan Wordsworth, Stephen Sherlock, David Christopher Kneller, David Llyod Schnuelle
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Patent number: 5335194Abstract: A sample rate converter comprises a first finite impulse response digital filter which effects a sampling rate doubling operation, which has a relatively large number of taps and whose output is connected to a second FIR digital filter having a relatively low number of variable coefficient taps. The frequency response of the first FIR digital filter is arranged to compensate for the frequency response of the second FIR digital filter.Type: GrantFiled: December 17, 1992Date of Patent: August 2, 1994Assignee: Innovision LimitedInventors: John C. Clayton, Trevor N. Scofield