Abstract:
In a signal communication device, a frequency-selective filter has at least one component that is biased by a control signal to establish a center frequency of the frequency- selective filter. A closed-loop bias generator is provided to generate the control signal and to adjust the control signal based, at least in part, on a comparison of the control signal and a reference signal
Abstract:
A self-calibrating analog-to-digital converter (ADC). The ADC includes multiple component ADCs to generate respective digital representations of an input signal in response to respective timing signals that are offset in phase from one another, each component ADC having a gain setting that controls a magnitude of the digital representations. The ADC further includes correction circuitry to generate a plurality of fast-Fourier transforms (FFTs) that correspond to the digital representations of the input signal and to adjust the gain settings of the component ADCs and/or phase angles of the timing signals based on gain and phase errors indicated by the FFTs.
Abstract:
An interactive device/system of and method for delivery, receipt and/or decoding of and/or response to keyed or tagged video content provided in connection with one or more video broadcasts (for example, television or streaming video). Responsive thereto, the system and method may deliver and/or receive video and/or audio information. Such delivery and/or receipt of video and/or audio information may be responsive to content embedded in the broadcast but not visually observed, responsive to broadcast content that is visually observed and then parsed and correlated with a predetermined response, and responsive to a user/operator instruction, input and/or request. The interactive video receiving device may determine a video-based broadcast is an interactive video-based broadcast, wherein, the device automatically provides interaction options and or based on a response by the user/viewer to the video-based broadcast, the video receiving device transmits "interest-level" data (i.e., data which is representative of the viewer's level of interest to the video-based broadcast) to obtain additional information regarding the video-based broadcast. Other inventions are also disclosed.
Abstract:
A multichannel video receiver having an analog-to-digital conveyer, fast-Fourier transform circuit and inverse-Fourier transform circuit. The analog-to-digital converter circuit generates a digitized representation of a frequency band used to convey a plurality of video signals, and the fast-Fourier transform circuit generates a frequency-domain representation of the digitized representation of the frequency band. The inverse-Fourier transform circuit recovers, from the frequency-domain representation, a plurality of digitized time-domain signals that correspond to the plurality of video signals.
Abstract:
An analog video receiver implemented in an integrated circuit device. The analog video receiver includes an amplifier to amplify an analog video signal having a desired carrier frequency, and a mixing circuit to mix the amplified analog video signal with a complex sinusoid having a frequency substantially equal to the carrier frequency.
Abstract:
A system for determining a user indication is disclosed. The system includes a communication interface configured to send a signal to be used to propagate a freely propagating signal through a propagating medium with a surface and receive the freely propagating signal that has been disturbed by a disturbance on the surface. The system also includes a processor coupled to the communication interface and configured to process the received signal to determine a user indication associated with the disturbance.
Abstract:
A system for determining a user indication is disclosed. The system includes a communication interface configured to send a signal to be used to propagate a freely propagating signal through a propagating medium with a surface and receive the freely propagating signal that has been disturbed by a disturbance on the surface. The system also includes a processor coupled to the communication interface and configured to process the received signal to determine a user indication associated with the disturbance.
Abstract:
A method and circuitry for processing a video signal corresponding to a source synchronous video broadcast which corresponds to a selected channel which is one of a plurality of channels of a broadcast spectrum In one aspect, the method includes generating digitized data of the video signal, which corresponds to the source synchronous video broadcast, using a local clock signal having a frequency which is different from the frequency of the source clock of the video broadcast, generating video data using the digitized data of the video signal, generating formatted video data blocks by arranging the video data into one or more lines or frames of video data, generating temporal reference signals wherein each temporal reference signal is associated with at least one formatted video data block
Abstract:
An interactive device/system of and method for delivery, receipt and/or decoding of and/or response to keyed or tagged video content provided in connection with one or more video broadcasts (for example, television or streaming video). Responsive thereto, the system and method may deliver and/or receive video and/or audio information. Such delivery and/or receipt of video and/or audio information may be responsive to content embedded in the broadcast but not visually observed, responsive to broadcast content that is visually observed and then parsed and correlated with a predetermined response, and responsive to a user/operator instruction, input and/or request. The interactive video receiving device may determine a video-based broadcast is an interactive video-based broadcast, wherein, the device automatically provides interaction options and or based on a response by the user/viewer to the video-based broadcast, the video receiving device transmits "interest-level" data (i.e., data which is representative of the viewer's level of interest to the video-based broadcast) to obtain additional information regarding the video-based broadcast. Other inventions are also disclosed.
Abstract:
An analog video receiver implemented in an integrated circuit device. The analog video receiver includes an amplifier to amplify an analog video signal having a desired carrier frequency, and a mixing circuit to mix the amplified analog video signal with a complex sinusoid having a frequency substantially equal to the carrier frequency.