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Signal processing system

A technology for signal processing and control signals, applied in electrical digital data processing, instruments, sustainable buildings, etc., can solve the problems of increasing the total manufacturing cost

Inactive Publication Date: 2006-03-15
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while this approach provides the desired low power consumption and user convenience, it increases the overall manufacturing cost of the system

Method used

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  • Signal processing system
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Experimental program
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Embodiment Construction

[0017] exist figure 1 In , the general structure of a consumer electronic device 1 is shown in a schematic manner. The device 1 is constructed in the form of a first and a second part 2 , 3 which are powered from a mains supply line 4 . The first part 2 comprises a main system 6 powered by a mains power supply 7 . Host system 6 may include a media drive for a VCR or DVD player, signal processing circuitry, and the like. Regardless, the main system 6 includes all units and components that exhibit high power consumption.

[0018] The second part 3 of the device 1 comprises an auxiliary controller 8 , a VFD driver 9 (for example a commercially available μPD16315 from NEC Corporation), an IR receiver 11 and a standby power supply 12 . The auxiliary controller 8 communicates with the VFD driver 9 via a 4-wire serial data bus system. As soon as device 1 is connected to the mains, the standby power supplies power to all units of part 3 at all times. In addition, the auxiliary co...

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Abstract

A system for data communication purposes in electronic devices comprises a data bus comprising first, second, third and forth signal paths. A first control means generates a first state of a control signal in the presence of a clock signal in a first mode of operation. The first operation mode may be the normal operation mode of a consumer electronic apparatus. A second control means generates a second state of the control signal in the presence of a clock signal in a second mode of operation. The second operation mode may be the stand-by mode of the consumer electronic apparatus. The system can be easily integrated into existing systems utilizing e.g. a VFD protocol.

Description

technical field [0001] The present invention relates to signal processing systems controlled via a data bus, such as a serial data bus. Signal processing systems, such as those in consumer electronics devices, typically include digital integrated circuits (ICs) that implement various functions. In television receivers, for example, ICs provide signal processing functions including tuning, video processing, and audio processing. In addition, a microcomputer (μC) IC controls the operation of other ICs by writing data such as control parameters into the IC and reading data such as status data from the IC. Information is exchanged between the IC and the controlling μC via a data bus, such as a serial data bus. Background technique [0002] In EP 0 693 729 A1 a multiprotocol 3-wire data bus system is described. Known serial data bus systems include a data bus comprising 2 clock lines and 1 data line. The controller generates a first clock signal (SCL) and a first data signal ...

Claims

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Application Information

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IPC IPC(8): G06F13/42
CPCG06F13/4291Y02B60/1228Y02B60/1235Y02D10/00G06F13/42
Inventor 曾永汉罗纳德·邱
Owner THOMSON LICENSING SA