Abstract:
A gateway apparatus (20) is capable of distributing audio, video, and/or data signals in a household and/or business dwelling using the existing coaxial cable infrastructure. According to an exemplary embodiment, the gateway apparatus (20) includes signal processing elements (21-32) which receive signals from a satellite source and process the received signals to generate analog signals corresponding to a desired satellite transponder. A controller (34) enables generation of the analog signals responsive to a request signal. The analog signals are provided to a client device (40) via a coaxial cable connecting the gateway apparatus (20) and the client device (40).
Abstract:
The RF signals received from the LNB and the corresponding IF signal produced by the tuner may be offset in frequency due to reasons other than a frequency drift of the oscillator of the LNB, such as satellite transponder frequency adjustments made by the satellite transmission system. A tuner (9) includes a local oscillator (911) controlled by a controller. The controller (a) controls the frequency of the local oscillator (911); (b) stores digital nominal frequency representative words for respective ones of RF signals received; (c) stores digital offset representative words for respective ones of the RF signals; (d) determines a frequency offset of said carrier signal after an RF signal has been tuned; (e) updates all of the digital offset representative words in accordance with the frequeny offset of the carrier; (f) derives the tuning representative word for an RF signal selected to be tuned by combining said nominal frequency representative word for the RF signal selected to be tuned with the previously updated offset representative word for the RF signal selected to be tuned; and (g) updates the respective digital offset representative word for an individual RF signal presently being tuned if correct tuning is not achieved with the previously updated offset representative word.
Abstract:
The disclosed embodiments relate to a system (200) and method (400) for receiving multiple channels in a communications receiver. The system (200) includes a first module (206) further including an analog to digital converter (210) for converting an input signal to a first and second digital signal and a first processor (220, 230, 240) for processing the first digital signal, and a second module (256) further including a second processor (260, 270, 280) to process the second digital signal. The method (400) involves receiving an analog signal (402), converting the analog signal to a first and second digital signal (404), passing the first digital signal through a first interface (406), processing the first digital signal to a produce a first plurality of output signals (408), passing the second digital signal through a second interface (410), and processing the second digital signal to produce a second plurality of output signals (412).
Abstract:
The present invention relates to system diagnostic circuitry for antenna systems with active antenna components. More specifically, the present invention discloses an apparatus comprising a connection (710) between an antenna and a power supply conducting a first DC voltage, a source of a pulse width modulated signal (730), a lowpass filter for converting (R3, C1) the pulse width modulated signal to a second DC voltage, and a comparator for comparing (740) the first DC voltage and the second DC voltage and generating an output signal responsive to the difference between the first DC voltage and the second DC voltage.
Abstract:
A gateway apparatus (20) is capable of distributing signals such as audio, video, and/or data signals in a household and/or business dwelling using the existing coaxial cable infrastructure, and the signal distribution is controlled using the coaxial cable infrastructure as a back channel. According to an exemplary embodiment, the gateway apparatus (20) includes signal processing elements (21, 24, 25, 26) for receiving signals from a broadcast source and processing the received signals to generate processed analog signals. A back channel demodulator (27) receives a request signal from a client device (30) via a coaxial cable connecting the gateway apparatus (20) and the client device (30). The processed analog signals are provided to the client device (30) via the coaxial cable responsive to the request signal.
Abstract:
A gateway apparatus (20) is capable of distributing signals such as audio, video and/or data signals throughout a household and/or business dwelling using the existing coaxial cable infrastructure. According to an exemplary embodiment, the gateway apparatus (20) includes a front-end processor (21) operative to receive signals from a broadcast source and process the received signals to extract a desired digital transport stream. An encoder (24) encodes the desired digital transport stream with error correction data to generate encoded digital signals. A digital-to-analog converter (25) converts the encoded digital signals to analog baseband signals. A modulator (26) modulates the analog baseband signals to generate processed analog signals which are provided to a client device (30) via a coaxial cable connecting the gateway apparatus (20) and the client device (30).
Abstract:
A server apparatus (20) is capable of distributing signals such as audio, video and/or data signals in a household and/or business dwelling using the existing coaxial cable infrastructure. According to an exemplary embodiment, the server apparatus (20) includes a controller (31), which detects an available frequency band on a coaxial cable connecting the server apparatus (20) and a client device (50). Signal processing elements (22, 29, 30) receive signals from a broadcast source, process the received signals to generate processed analog signals, and provide the processed analog signals to the client device (50) using the available frequency band.
Abstract:
Hacking of a class of Set-Top Boxes known as Integrated Receiver-Decoders (IRDs) used to receive satellite broadcasts for display on television sets is prevented by use of connections to the reprogramming enable pin (22) of a flash memory (12). If a user attempts to reprogram the boot sector of the flash memory (12) in order to obtain free services via piracy, the set-top box is destroyed. The invention relates to the design and manufacture of IRDs that are resistant to hacking via unauthorized reprogramming.
Abstract:
A server apparatus (20) is capable of distributing audio, video, and/or data signals in a household and/or business dwelling using the existing coaxial cable infrastructure. According to an exemplary embodiment, the server apparatus (20) includes a receiving element (21) operative to receive signals from a broadcast source. First processing elements (28, 29) generate first analog signals responsive to the received signals. Second processing elements (31-33) generate second analog signals responsive to the received signals. The first analog signals are provided to a first client device (50) via a coaxial cable connecting the server apparatus (20) and the first client device (50). The second analog signals are provided to a second client device (60) via the coaxial cable connecting the server apparatus (20) and the second client device (60).
Abstract:
A server apparatus (20) is capable of distributing recorded content in a household and/or business dwelling using the existing coaxial cable infrastructure. According to an exemplary embodiment, the server apparatus (20) includes a front-end processor (21) operative to receive signals from a broadcast source and process the received signals to generate digital data. A memory (27) is operative to record the digital data. A controller (31) is operative to enable retrieval of the digital data from the memory (27). An encoder (28) is operative to encode the retrieved digital data with error correction data to generate encoded digital signals. A digital-to-analog converter (29) is operative to convert the encoded digital signals to analog signals. A modulator (30) is operative to modulate the analog signals to generate processed analog signals, which are provided to a client device (50) via a coaxial cable connecting the server apparatus (20) and the client device (50).