Method and equipment for controlling energy conservation of mobile broadcast receiver
A technology for broadcast receiving equipment and energy-saving control, which can be used in broadcast transmission systems, energy reduction, color TV components, etc., and can solve problems such as circuit complexity.
Inactive Publication Date: 2012-07-11
HONG KONG APPLIED SCI & TECH RES INST
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However, this technique also only provides high-level power-down control based on time-slot boundaries for time-division multiplexing of content channels
Furthermore, the disclosed fast resync technique requires deletion of data in the processing pipeline, resulting in additional circuit complexity
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[0016] In the following description, a method and system for power saving control in a mobile broadcast receiver are set forth as a preferred example. Modifications including additions and / or subtractions can be made by those skilled in the art without departing from the scope and spirit of the present invention. Specific details may be omitted to avoid obscuring the invention; however, the disclosure should be written to enable one skilled in the art to practice the teachings herein without undue experimentation.
[0017] The preferred embodiment of the present invention is applied to a digital broadcast receiver that receives a digital broadcast signal carrying multiple content programs or channels in a time-division multiplexed manner, for example, in a manner implementing the China Mobile Multimedia Broadcasting (CMMB) standard . refer to figure 1 . The CMMB standard features a multi-bearer broadcast signal with cyclic prefix Orthogonal Frequency Division Multiplexing (...
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In a broadcast receiver for receiving digital broadcast signals carrying a plurality of content programs or signal channels in the way of time division multiplexing, a tuner, a ADC (analog to digital converter), a submodule in a core of a demodulator and a decoder are divided into a plurality of power supply areas according to the periphery of treating steps. The plurality of power supply areas form a signal data treating channel with a plurality of stages, and the plurality of stages correspond to the power supply areas. During a time slot burst, only the power area treating the signal data is opened. Once the treatment is finished, the power area is closed. Beyond the time slot burst, the power area is closed. During a time slot before the next time slot burst starts, the ADC and the first power supply area are opened. Therefore, the receiver provided by the invention is simply not influenced by any residual data in a treating channel from a last sudden circulation and does not need to delete data.
Description
technical field [0001] The present invention generally relates to power saving schemes for electronic circuits. Specifically, the present invention relates to a method and system for power saving control in a communication demodulator integrated circuit. Background technique [0002] Certain electronic circuit designs are of particular interest in saving energy. Especially when applied to portable equipment, the electronic components in the portable equipment draw power from the battery. One way to save energy is to cut off power to components when they are not in use. A mobile digital broadcast receiver device in a broadcast network generally includes modules such as a tuner, a demodulator, and a decoder. When a receiver device receives a broadcast signal, the tuner, demodulator, and decoder process the signal in stages. Therefore, different modules can be switched on and off based on the signal processing stage to avoid unnecessary power consumption caused by idle modu...
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Login to View More IPC IPC(8): H04N5/63H04N5/44H04H20/71
CPCY02D30/70
Inventor 周正华杨永琪
Owner HONG KONG APPLIED SCI & TECH RES INST