Adaptive radio controlled clock employing different modes of operation for different applications and scenarios
First Claim
1. A radio receiver method, said method comprising:
- receiving broadcast signal data frames comprising phase modulation (PM) over a legacy pulse width modulated (PWM)/amplitude modulated signal, said broadcast signal encoded with phase-modulated time and timing information;
extracting said time and timing information from the phase of said received signal;
operating said radio receiver in accordance with a predefined profile adapted for a particular type of application host;
wherein information represented by said phase modulation is independent of the information represented by said legacy amplitude modulation; and
wherein at least one input parameter from said application host is adapted to select a profile of operation from a plurality of predefined profiles of operation.
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Abstract
A configurable system and method for a radio controlled clock (RCC) receiver adapted to apply different strategies for extracting timing and time information from a phase modulated signal depending on the type of application the RCC is used in and on the reception conditions. The official time signal is broadcast from a central location using a modulation scheme which includes phase modulation that alternates between different information rates, allowing for multiple alternative reception modes that are suited for different ranges of signal-to-interference-and-noise-ratio (SINR). The operation of the RCC is configured by the application that hosts it, such that the reception performance and the energy consumption best suit that application. The reception mode used by the RCC at a given time may be selected automatically, i.e. without user intervention, based on the device'"'"'s profile of operation and the reception conditions.
58 Citations
19 Claims
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1. A radio receiver method, said method comprising:
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receiving broadcast signal data frames comprising phase modulation (PM) over a legacy pulse width modulated (PWM)/amplitude modulated signal, said broadcast signal encoded with phase-modulated time and timing information; extracting said time and timing information from the phase of said received signal; operating said radio receiver in accordance with a predefined profile adapted for a particular type of application host; wherein information represented by said phase modulation is independent of the information represented by said legacy amplitude modulation; and wherein at least one input parameter from said application host is adapted to select a profile of operation from a plurality of predefined profiles of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio controlled clock (RCC), comprising:
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a receiver coupled to an application host, said receiver operative to receive broadcast signal data frames comprising phase modulation (PM) over a legacy pulse width modulated (PWM)/amplitude modulated signal, said broadcast signal encoded with phase-modulated time and timing information, and extract said time and timing information from the phase of said received signal; at least one profile adapted to operate said receiver in accordance with one or more parameters optimized for a particular type of application host; wherein information represented by said phase modulation is independent of the information represented by said legacy amplitude modulation; and wherein at least one input parameter from said application host is adapted to select a profile of operation from a plurality of predefined profiles of operation. - View Dependent Claims (13, 14, 15)
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16. A radio receiver method, said method comprising:
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receiving broadcast signal data frames comprising phase modulation (PM) over a legacy pulse width modulated (PWM)/amplitude modulated signal, said broadcast signal encoded with phase-modulated time and timing information; extracting said time and timing information from the phase of said received signal; operating said radio receiver in accordance with a predefined profile adapted for a particular type of application host; adaptively attempting reception at multiple different symbol rates allowing for optimized reception for different conditions; wherein information represented by said phase modulation is independent of the information represented by said legacy amplitude modulation; and wherein at least one input parameter from said application host is adapted to select a profile of operation from a plurality of predefined profiles of operation. - View Dependent Claims (17, 18, 19)
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Specification