CN2655532Y - Domestic distributed multimedia system - Google Patents

Domestic distributed multimedia system Download PDF

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Publication number
CN2655532Y
CN2655532Y CN 200320102780 CN200320102780U CN2655532Y CN 2655532 Y CN2655532 Y CN 2655532Y CN 200320102780 CN200320102780 CN 200320102780 CN 200320102780 U CN200320102780 U CN 200320102780U CN 2655532 Y CN2655532 Y CN 2655532Y
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signal
media
medium
control
unit
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张�浩
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Abstract

The utility model discloses household used distributed multi-medium system, the system sends the multi-medium coming from a cable signal source from at least one signal source host to at least a medium node in the method of wireless transmission, wherein the at least one signal source host comprises a cable data processing unit and a first medium receiving and sending unit, the at least one medium node comprises a second medium receiving and sending unit, a medium processing unit and a first medium receiving and sending unit, the system comprises a plurality of signal source hosts and a plurality of medium nods, and the plurality of signal source hosts are respectively corresponding to the plurality of medium nods, or the system comprises a single signal source host and a plurality of medium nodes. The utility model realizes the sharing of on medium data source between a plurality of medium nodes, and the wireless transmission is adopted between the medium nods and the signal source hosts, the utility model can adopt the existing mature chip for manufacturing, which is suitable for plural kinds of using methods.

Description

Home-use distributed multimedia system
Technical field
The utility model relates to a kind of family expenses multimedia system, and more particularly, the utility model relates to a kind of distributed multimedia system of wireless transmission of family expenses.
Background technology
Existing family expenses multimedia system receives multi-media signal from cable signal source in the mode of wire transmission usually, as digital CATV set-top-box, and only is to use the monomedia node usually.
Along with the continuous maturation of data transmission technology, the increasing network equipment has entered family.Digital audio, video wireless sharing become a kind of new application idea gradually.
Therefore just needing a kind of equipment can send the multi-media signal from cable signal source with Wireless transmission mode, and shares reception and control by a plurality of media nodes.This equipment should change into digital signal with the signal (analog or digital) of cable of cable TV, PC equipment, home video playback equipment, and digital signal is carried out the wireless transmission emission.This equipment can also receive wireless digital signal by media node, and the signal that receives handled and shows.This equipment also can be controlled system.
Summary of the invention
One of the purpose of this utility model provides a kind of home-use distributed multimedia system, and this system can realize the wireless transmission of the signal of cable signal source in the information source host side; Two of the purpose of this utility model provides a kind of home-use distributed multimedia system, and this system can be shared by a plurality of media nodes and use an information source main frame.
To achieve these goals, the utility model provides a kind of home-use distributed multimedia system, and this system will send at least one media node from least one information source main frame with wireless transmission method from the multi-media signal of cable signal source.
Described at least one information source main frame comprises:
The cable data processing unit is used to receive simulation and/or digital signal from cable signal source,
When cable signal source was analog signal, this unit was translated into digital signal; This unit is sent to the medium transmitter unit with digital signal;
The first medium Transmit-Receive Unit, the digital signal that is used to receive from the cable data processing unit also will
Be emitted to the second medium Transmit-Receive Unit after this signal encoding; And reception comes the control signal of the second medium Transmit-Receive Unit.
Described at least one media node comprises:
The second medium Transmit-Receive Unit is used to receive and decodes from the coded digital signal of the first medium Transmit-Receive Unit and be sent to media processing units; Simultaneously the control command of media control unit is launched back the first medium Transmit-Receive Unit;
Media processing units is used to receive the digital signal from the second medium Transmit-Receive Unit, and described digital signal sorting is outputed to the Voice ﹠ Video terminal;
Media control unit is used to receive the control signal of this media node user to this media node.
This system comprises a plurality of information source main frames and a plurality of media node, and a plurality of information source main frames are corresponding one by one with a plurality of media nodes.This system comprises single information source main frame and a plurality of media node.
Described cable data processing unit comprises tuner, and the MPEG2 transducer and the qam demodulator that are connected with tuner respectively.
The described first medium Transmit-Receive Unit and/or the second medium Transmit-Receive Unit comprise and the data register that is connected by CPU, transceive data register, data coder/decoder and emission compensator, and the transmitting-receiving port.
The described first medium Transmit-Receive Unit also comprises EPROM and the CPU that is used for processing control signals.
Described media processing units comprises the data input controller that receives data and the data processing module of deal with data, by CPU control data processing memory and data processing module collaborative work, the data processing module part will be delivered to driver module and audio driven module by the signal that data processing memory transmits, and by video interface and audio interface difference output video image and audio signal.
Described media control unit comprises user control interface, the cpu chip that is connected with user control interface, and the EPROM that is connected with CPU, and be used for being connected RAM with the second medium Transmit-Receive Unit with media processing units respectively.
Described information source main frame also comprises the control that is connected with a CPU EPROM circuit, and this control is with storing control command in the EPROM circuit.
Described tuner is two-way tuner, and described information source main frame also comprises an interface expanded circuit.
The utility model has realized that a plurality of media nodes share a multi-medium data source, and adopts wireless transmission between media node and information source main frame.In use, a plurality of media nodes can be arranged in different positions easily as required, and each node users all can independently control the media signal that is received, to satisfy the user demand of different user.In addition, the utility model can adopt existing ripe chip to make, and is applicable to multiple occupation mode.
Description of drawings
Fig. 1 is the composition frame chart of home-use distributed multimedia system of the present utility model;
Fig. 2 is the theory diagram of information source main frame;
Fig. 3 is that the circuit of an embodiment of the information source main frame of Fig. 2 is formed schematic diagram;
Fig. 4 is the theory diagram of media node;
Fig. 5 is that the circuit of an embodiment of the media node of Fig. 4 is formed schematic diagram;
Fig. 6 is that the information source host circuit of Controlling Source assembling structure scheme is formed schematic diagram;
Fig. 7 is that the information source host circuit of data processing assembling structure scheme is formed schematic diagram;
Fig. 8 is home-use distributed multimedia system of the present utility model and other equipment connection diagrams.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
As shown in Figure 1, home-use distributed multimedia system of the present utility model comprises cable data processing unit 10, the first medium Transmit-Receive Unit 20, the second medium Transmit-Receive Unit 30, media processing units 40 and media control unit 50.Wherein, cable data processing unit 10 and the first medium Transmit-Receive Unit, 20 frameworks are that information source main frame 100, the second medium Transmit-Receive Units 30, media processing units 40 and media control unit 50 frameworks are media node 200.
The detailed composition of information source main frame 100 as shown in Figure 2, and in conjunction with Fig. 1, cable data processing unit 10 is used for the signal of analyzing and processing from cable signal source 60.Tuner 11 in the cable data processing unit 10 is with tuning digital signal and the analog signal of being separated into of the media signal of cable signal source 60, if signal is modulating video digital signal (as the DTV-QAM/QPSK modulation signal) or other digital signals, then after QAM demodulation 12, directly send into the first medium Transmit-Receive Unit 20; If signal is the PAL/NTSC standard signal of simulation then is converted into the MPEG2 signal by MPEG2 change-over circuit 13 and sends into the first medium Transmit-Receive Unit 20 again.
The first medium Transmit-Receive Unit 20 is used to encode and launches digital signal from cable data processing unit 10.Enter in the data register by the primary signal of cable data processing unit 10 input and to cushion, trigger the transceive data register after the data register buffering finishes signal is read in the transceive data register by data register, transmit signals to the data coder/decoder by CPU control transceive data register and encode, launch by the transmitting-receiving port at last.CPU detects emission at any time, because bandwidth and disturb and the signal emission to be produced lose or problem such as delay is launched compensation control so CPU also controls an emission compensator.This unit 20 can adopt the 802.11b/a/g technology to realize, for example adopts MagisAir5 rf chip group.The first medium Transmit-Receive Unit 20 also is used to receive the control signal from the medium economize on electricity.
Fig. 3 is an application example of information source main frame shown in Figure 2.Among Fig. 3, at first send into PHILIPS CD1516 tuning chip by the primary signal of RF cable input and carry out tuningly, and distinguish digital television signal (DVBQAM form) and anolog TV signals (PAL/NTSC form).Chip carries out the QAM demodulation if digital signals format then transmits signals to LSILOG L9A5004QAM, output MPEG2 form encoding stream after demodulation is finished; If then being sent to analog signal the WiSGO7007 chip, analog signal format carries out MPGE2 form code conversion, output MPGE2 form encoding stream.Subsequently, the MPGE2 encoding stream is admitted to the MagisAir5 chipset, delivers to its emission port after treatment and launches (meeting the 802.11x standard).
For acceptance and the processing that realizes node control message, Magis Air5 chipset is also connecting receiving port simultaneously.After receiving control signal, the MagisAir5 chipset (meets the 802.11x standard), with control signal reduction and deliver to the EPROM chip, the instruction that obtains among the Intel 8051 chipset real-time judge EPROM, and finish control to PHILIPS CD1516 tuning chip according to instruction, filter out the signal of different frequency, reach the purpose that the user controls channel.
The detailed composition of media node 200 as shown in Figure 4, and in conjunction with Fig. 1, the second medium Transmit-Receive Unit 30 be used to accept and the reduction of decoding from the digital signal of the first medium Transmit-Receive Unit 20, it forms with the first medium Transmit-Receive Unit 20 basic identical.This unit 30 can adopt the 802.11b/a/g technology to realize equally, adopts as MagisAir5 rf chip group.
Media processing units 40 is used for the processing of classifying from the digital signal of the second medium Transmit-Receive Unit 30, and shows to VRT, liquid crystal, EL panel, VGA equipment etc.Digital signal from medium receiving element 30 deposits data processing memory in by data input controller then, partly carries out collaborative work by CPU control data processing memory and data processing module then.After will being handled by the signal that data processing memory transmits, the data processing module part delivers to driver module and audio driven module, and by video interface and audio interface difference output video image and audio signal.This unit 40 can adopt the existing chip in market to carry out single chip design may, as Philip PNX85x family chip group.
Media node 200 also comprises media control unit 50, can accept extraneous control command (button or distance type).Extraneous control command is controlled by 50 couples of CPU of media control unit, and by CPU data input controller and data processing module is controlled.
Fig. 5 is an application example of media node 200 shown in Figure 4.As shown in Figure 5, the MagisAir5 chip in the media node circuit receives the data by the emission of the MagisAir5 chip on the information source main frame, and becomes the MPEG2 data flow to transmit into PHILIPS Nexperia PNX855x family chip group reduction of data.This chipset is stored the MPGE2 data flow in the buffer memory in the chip in real time, and handles the MPGE2 data in the buffer memory constantly, finishes demultiplexing, relevant treatment such as descrambling, and it is decomposed, form the video data stream and the audio data stream that are separated from each other.Wherein, video data stream meets the CCIR656 standard.Then, chip is changed data, generates RGB and two kinds of video output signals of PAL/NTSC and AC3 audio output signal.Respectively the Voice ﹠ Video signal is connected on sound device and the display device, finishes media play function.Media control unit 50 is used for the control command of relative users.The control operation that the user carries out (as pressing some control buttons) is produced a signal and is sent to Intel 8051 chips by user control interface, Intel 8051 chips extract from EPROM control code that should signal, and control code judged, if control code is the control Presentation Function, then control code is sent into RAM2, PHILIPS Nexperia PNX855x family chip group controlled command code from RAM2 is constantly finished the demonstration Control work; If control code is a control information source main frame 100, then control code is sent into RAM1, the controlled command code from RAM1 that MagisAir5 chipset in this node circuit is real-time, and send into the signal transmitting terminal after the control command sign indicating number handled, be transmitted to the information source host circuit, be the receiving port among Fig. 3, finish response this control signal by the information source main frame.
By aforesaid information source main frame and media node, carry out simple overlap-add procedure, can realize the stack system of a plurality of information source main frames and a plurality of media nodes, wherein, the corresponding media node of each information source main frame.The subscriber signal control of stack system is that direct CPU to the pairing single information source main frame of some media nodes controls, and finishes the signal frequency of information source main frame and selects.
(1) Controlling Source is integrated framework scheme
In order to realize that a plurality of media nodes 200 share an information source main frame simultaneously, and each media node can carry out independent operation, increases by the control that is connected with a CPU EPROM circuit on the basis of information source main frame shown in Figure 3.This scheme can be described as Controlling Source and integrates framework as shown in Figure 6.This control stores the tuner circuit control command with EPROM, and the CPU (Intel 8051) that is used for controlling embedded system carries out channel adjustment with reference to being stored in data with the current channel information of pairing media node of this cycle among the EPROM at the PHILIPS CD1516 tuning chip of some cycle control information source main frames.Simultaneously, the CPU of embedded system (Intel 8051) extraction is stored in this control and instructs with the MagisAir5 chip controls among the EPROM, MagisAir5 chip in the control information source main frame is launched data with this cycle pairing media node address to pairing media node with what store among the EPROM according to data, thereby realize the occupation mode of " single circuit is selected emission, and multiple spot is shared ".Media node in this programme can adopt structure as hereinbefore, and different is, the subscriber signal control in this programme is by changing in the embedded system data with the channel information of the current corresponding node of EPROM storage, and this mode is finished.
(2) data processing is integrated framework scheme
In order to expand the more data input interface and to realize that the data double-way between information source main frame and the cable signal source transmits, integrate in Controlling Source shown in Figure 6 on the basis of framework, signal processing work such as original demultiplexing of finishing at the media node place, descrambling also are integrated into the information source main frame, add the loop signal modulation simultaneously and send reconciliation transfer receiving unit, thereby realize additional functions such as video request program, online browsing.This scheme can be described as data processing and integrates framework as shown in Figure 7.Utilize the STi5514 chip and the ST40GX1 chip of ST company to carry out signal processing and send to realize above-mentioned requirements.As shown in Figure 7: carry out after the work such as QAM demodulation, demultiplexing, descrambling, PE processings generation standard C IRSS656 data flow through the tuning STi5514 of the sending into chip of two-way tuner CAPTU3000 from the signal of cable I EC input and send into the ST40GX1 chip and carry out the video code displaying, send into the WiSGO7007 chip behind the generation rgb signal and carry out the MPEG2 coding, send into the MagisAir5 chip after finishing and carry out the signal emission.This principle of work and power is identical with the single host circuit principle of stack information source main frame.The user is identical with control mode principle in the Controlling Source integration mode to the control mode of main frame receive frequency in the present embodiment, promptly carries out the control of mapping formula by the data of EPROM storage; The user from control signal that node transmitted to obtain way also identical with acquisition methods the Controlling Source integration mode.
In this programme, Intel 8051 CPU control STi5514 chip and ST40GX1 chip simultaneously, make them can collaborative work.Whether Intel 8051 CPU are also having reverse data operation signal (as operations such as video request program, network browsings) among the monitoring EPROM in real time simultaneously.If have, Intel 8051 CPU will send into the ST40GX1 chip to the instruction corresponding with command code, transmit operational order by this chip to the STV0396 chip according to instruction, the STV0396 chip carries out instruction to send into two-way tuner CAPTU3000 after the QPSK/QAM modulation, be emitted in the cable system, finish the control corresponding function.
The media node of this programme can adopt structure as hereinbefore.The signal format of each several part output is also identical with control mode.
Integrated strategy is realized relative complex, but intelligent degree height can be realized the software control of system, the new function and application mode of convenient interpolation.Directly realize the self-defined control of video, habitual operation control as able to programme by the control transmitting and receiving apparatus, add a slice sound circuit and carry out simple programming, realize the system voice controlled function at once.
(3) as family information docking station and the parallel application of other housed devices:
Utilize aforesaid data processing to integrate mode and can be easy to accomplish to make PC or other family expenses information equipments to carry out wireless telecommunications, and other family expenses information equipments of commands for controlling of emission suitable frequency.As shown in Figure 8 be the connection framework map of several family expenses information equipments.Because STi5514 chipset and ST40GX1 chipset are supported ATA transmission line type and pci bus type, so can directly read hard disc data or by record such as Rel8139 chip Ethernet, can handle stack by chipset self after data are downloaded is mixed into rgb format and delivers to the WiSGO7007 chip and carry out the MOEG2 coding, and launch by the MagisAir5 chip, media node receives coding and shows.Like this, the information equipment in the family just can be realized data sharing.

Claims (10)

1, a kind of home-use distributed multimedia system is characterized in that, this system will send at least one media node from least one information source main frame with wireless transmission method from the multi-media signal of cable signal source;
Described at least one information source main frame comprises:
The cable data processing unit is used to receive simulation and/or digital signal from cable signal source,
When cable signal source was analog signal, this unit was translated into digital signal; This unit is sent to the medium transmitter unit with digital signal;
The first medium Transmit-Receive Unit, the digital signal that is used to receive from the cable data processing unit also will be emitted to the second medium Transmit-Receive Unit after this signal encoding; And reception comes the control signal of the second medium Transmit-Receive Unit;
Described at least one media node comprises:
The second medium Transmit-Receive Unit is used to receive and decodes from the coded digital signal of the first medium Transmit-Receive Unit and be sent to media processing units; Simultaneously the control command of media control unit is launched back the first medium Transmit-Receive Unit;
Media processing units is used to receive the digital signal from the second medium Transmit-Receive Unit, and described digital signal sorting is outputed to the Voice ﹠ Video terminal;
Media control unit is used to receive the control signal of this media node user to this media node.
2, home-use distributed multimedia system according to claim 1 is characterized in that, this system comprises a plurality of information source main frames and a plurality of media node, and a plurality of information source main frames are corresponding one by one with a plurality of media nodes.
3, home-use distributed multimedia system according to claim 1 is characterized in that, this system comprises single information source main frame and a plurality of media node.
4, home-use distributed multimedia system according to claim 1 is characterized in that, described cable data processing unit comprises tuner, and the MPEG2 transducer and the qam demodulator that are connected with tuner respectively.
5, home-use distributed multimedia system according to claim 1, it is characterized in that, the described first medium Transmit-Receive Unit and/or the second medium Transmit-Receive Unit comprise and the data register that is connected by CPU, transceive data register, data coder/decoder and emission compensator, and the transmitting-receiving port.
6, home-use distributed multimedia system according to claim 1 is characterized in that, the described first medium Transmit-Receive Unit also comprises EPROM and the CPU that is used for processing control signals.
7, home-use distributed multimedia system according to claim 1, it is characterized in that, described media processing units comprises the data input controller that receives data and the data processing module of deal with data, by CPU control data processing memory and data processing module collaborative work, the data processing module part will be delivered to driver module and audio driven module by the signal that data processing memory transmits, and by video interface and audio interface difference output video image and audio signal.
8, home-use distributed multimedia system according to claim 1, described media control unit comprises user control interface, the cpu chip that is connected with user control interface, the EPROM that is connected with CPU, and be used for being connected RAM with the second medium Transmit-Receive Unit with media processing units respectively.
9, home-use distributed multimedia system according to claim 3 is characterized in that, described information source main frame also comprises the control that is connected with a CPU EPROM circuit, and this control is with storing control command in the EPROM circuit.
10, according to claim 3 or 4 described home-use distributed multimedia systems, it is characterized in that described tuner is two-way tuner, described information source main frame also comprises an interface expanded circuit.
CN 200320102780 2003-11-06 2003-11-06 Domestic distributed multimedia system Expired - Fee Related CN2655532Y (en)

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CN 200320102780 CN2655532Y (en) 2003-11-06 2003-11-06 Domestic distributed multimedia system

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