CN1738379A

CN1738379A - TV set applying main, auxiliary microprocessor

Info

Publication number: CN1738379A
Application number: CNA2005100446456A
Authority: CN
Inventors: 洪烨; 菅怀刚; 蒋宝珠
Original assignee: Hisense Group Co Ltd; Qingdao Hisense Electronics Co Ltd
Current assignee: Hisense Group Co Ltd; Qingdao Hisense Electronics Co Ltd
Priority date: 2005-08-31
Filing date: 2005-08-31
Publication date: 2006-02-22

Abstract

Disclosed a TV set which uses a main-sub two-chip microprocessor, comprises a housing and a electronic circuit, wherein, the electronic circuit comprises a microprocessor circuit which includes a main microprocessor and a sub-microprocessor while the infrared control signal and the key-press signal are input to said two processors at one time. These two processor are both connected to the I2C bus, while a I/O port connects them. The main microprocessor also has a external flash memory and a RS232 interface while a special I/O port which can send the time switch-off effect information from the main microprocessor to the sub-microprocessor connects these two microprocessors. In addition, the main microprocessor uses the 16 bits X86 microprocessor of PHOTOPIA of PW Company and the sub-microprocessor uses the ATMEG8 of Atmel Company. The invention solves the conflict between high property and high power consumption, while it improves the property of TV, with significantly reduced power consumption. The invention can be used in family, hotel and the write building.

Description

Adopt the television set of major and minor dual micro processor

Technical field

The invention belongs to technical field of television sets, more particularly relate to the design of the television set that adopts major and minor dual micro processor.

Background technology

Along with popularizing of the development of digital television signal treatment technology and digital multimedia technology, also obtain lifting at full speed as the performance of the microprocessor (CPU) of its core, all the present canot compare with the past for its processing speed and processing capacity.Yet what bring is the sharp increase of power consumption thereupon.The type that has adopt PW company have powerful image processing function 16 X86 core microprocessors PHOTOPIA, power consumption is between 3 to 4W.That is to say that the high-performance of television set must be brought high power consumption before.

In international and domestic today that requires environmental protection and energy saving, high power consumption has become a wretched insufficiency of high-performance television set.

Summary of the invention

Purpose of the present invention just is to overcome above-mentioned shortcoming and defect, and a kind of television set that adopts major and minor dual micro processor is provided.It can solve the contradiction that high-performance must be brought high power consumption, in the high performance while of improving television set, reduces its power consumption greatly.

In order to achieve the above object, the present invention includes housing and be installed in electronic circuit in the housing, electronic circuit comprises microcontroller circuit.Microcontroller circuit comprises master microprocessor, secondary microprocessor.Infrared remote-controlled signal and push button signalling input to major and minor microprocessor simultaneously, and major and minor microprocessor all hangs over I ²On the C bus.Also connect between them by another I/O mouth.The also plug-in flash memory FLASH of master microprocessor, have can external PC the RS232 interface.

Can also connect between the major and minor microprocessor and can send specific I/O mouth that the timing shutdown information of coming into force sends secondary microprocessor to by master microprocessor.

Infrared remote-controlled signal and push button signalling input to major and minor CPU simultaneously, wherein secondary CPU only responds (by custom the remote keying instruction of being responsible for start/standby, in standby), the on/off of complete machine relay is controlled, and the timing shutdown notification of information receives; And host CPU removes the reception processing of being responsible for all the other all distant control functions, standby command is confirmed (before host CPU finishes every operation and handles, forbid that secondary CPU directly closes host CPU program error and confusion that tester in power-down state may cause), send the timing shutdown information of coming into force by specific I/O mouth and notify secondary CPU.

Host CPU operation exception for preventing that frequent outage from causing also will carry out suitable time-delay to the operation of secondary CPU, the steady operation of host CPU during the assurance switching on and shutting down.

Secondary CPU-ATMEG8 and host CPU-PHOTOPIA can pass through I ²The C bus is carried out communication, also can be by the mutual exchange message of I/O mouth of particular design.

The executive program of host CPU can need PC to connect RS232 mouth on this machine by the data in the plug-in FLASH memory being write again, writing; The executive program of secondary CPU can be by writing the data in the built-in FLASH memory again, and the data wire of reserving on the circuit board can connect the ATMEG dedicated data line and write.

That master microprocessor adopts is 16 x86 microprocessor PHOTOPIA of PW company, and that secondary microprocessor is selected for use is the ATMEG8 of Atmel company.

PHOTOPIA is responsible for going interlacing to handle (Deinterlacing), integral image control (Scaling), noise reduction and image quality lifting etc. to digital video signal as master microprocessor (Main CPU).The power management (PowerManagement) of the responsible complete machine of a secondary microprocessor (Sub CPU) that increases, part remote keying receive processing capacity, part signal detection/system wake-up function etc. in addition.When the I/O mouth is not enough afterwards, also can bear a part of I/O mouth input/output function.This mode can be shunted the workload of host CPU, and the simplified system complexity significantly reduces power consumption.

ATMEG8 is a low-power consumption, low cost, high performance AVR single-chip microcomputer with 10 A/D converters, has 10 A/D converters, the FLASH memory of 8K byte, the SRAM of 1K byte nearly, the EEPROM memory of 512 bytes.The I that also has hardware USART SPI and handle based on byte ²The C mouth possesses real-time clock (RTC) function.

Task of the present invention comes to this and finishes.

The invention provides a kind of television set that adopts major and minor dual micro processor.It can solve the contradiction that high-performance must be brought high power consumption, in the high performance while of improving television set, reduces its power consumption greatly.It can be widely used in the places such as family, hotel, office building.

Description of drawings

Fig. 1 is a functional-block diagram of the present invention.

Fig. 2 is its circuit theory diagrams.

Embodiment

Embodiment 1.A kind of television set that adopts major and minor dual micro processor, it comprises housing and is installed in electronic circuit in the housing that electronic circuit comprises microcontroller circuit.Microcontroller circuit comprises master microprocessor (1), secondary microprocessor (2).Infrared remote-controlled signal and push button signalling input to major and minor microprocessor (1) and (2) simultaneously, and major and minor microprocessor (1) and (2) all hang over I ²On the C bus.Also connect between them by another I/O mouth (3).The also plug-in flash memory FLASH of master microprocessor (1), have can external PC the RS232 interface.

Also connecting between major and minor microprocessor (1) and (2) and can send specific I/O mouth (4) that the timing shutdown information of coming into force sends secondary microprocessor (2) to by master microprocessor (1).

That master microprocessor (1) adopts is 16 x86 microprocessor PHOTOPIA of PW company, and that secondary microprocessor (2) is selected for use is the ATMEG8 of Atmel company.

Present embodiment is a kind of panel TV set.The power consumption that its mono signal is handled movement can be lower than 0.02W, even after adding the self power of flat-plate television power supply module, complete machine power also can be lower than 1.8W.Thereby solved the contradiction of high-performance and high power consumption well.And follow-up improvement can increase HDMI CEC function, real-time clock function easily and having or not of the insertion of PC/DVI holding wire and signal such as detected at function.

Embodiment 1 greatly reduces its power consumption in the high performance while of improving television set, reliable operation, stable, function admirable.It can be widely used in the places such as family, hotel, office building.

Claims

1. television set that adopts major and minor dual micro processor, it comprises housing and is installed in electronic circuit in the housing, electronic circuit comprises microcontroller circuit, it is characterized in that microcontroller circuit comprises master microprocessor, secondary microprocessor, infrared remote-controlled signal and push button signalling input to major and minor microprocessor simultaneously, and major and minor microprocessor all hangs over I ²On the C bus, also connect between them by another I/O mouth, the also plug-in flash memory FLASH of master microprocessor, have can external PC the RS232 interface.

2. according to the television set of the major and minor dual micro processor of the described employing of claim 1, it is characterized in that also connecting between the said major and minor microprocessor and can send specific I/O mouth that the timing shutdown information of coming into force sends secondary microprocessor to by master microprocessor.

3. according to the television set of claim 1 or the major and minor dual micro processor of 2 described employings, that it is characterized in that said master microprocessor employing is 16 x86 microprocessor PHOTOPIA of PW company, and that secondary microprocessor is selected for use is the ATMEG8 of Atmel company.