Multimedia handset with mobile TV receiver communications interface
Technical field
The utility model relates to a kind of multimedia handset, specifically is a kind of multimedia handset with mobile TV receiver communications interface that relates to.
Background technology
On October 24th, 2006, SARFT(The State Administration of Radio and Television) has formally issued China Mobile multimedia broadcasting (being commonly called as mobile TV) industry standard, determines to adopt the Mobile Multimedia Broadcasting industry standard (CMMB) of China's independent research.In order better on mobile phone, to receive TV and broadcast program, need to adopt a kind of communications interface, this interface can carry out the control of transfer of data and order efficiently between mobile TV receiver and multimedia handset, by this communications interface, multimedia handset can receive radiovision and broadcast singal convenient and efficiently.
The utility model content
The purpose of this utility model is to provide a kind of multimedia handset with mobile TV receiver communications interface, after TV programme and broadcast message that the mobile TV receiver receives from wireless space, send radiovision data and voice data to multimedia handset by this interface, multimedia handset is handled after the information that receives, can on mobile phone, preserve this information, perhaps offer the user of mobile phone by the audiovisual system on the multimedia handset.
In order to reach this purpose, the objective of the invention is to realize by following technical measures.
A kind of multimedia handset with mobile TV receiver communications interface is characterized in that the fuselage of mobile phone is provided with the integrated communications combined interface that is used to connect the mobile TV receiver, comprises in the described communications combined interface:
SPI communication interface part is used for adopting between multimedia handset and the mobile TV receiver SPI agreement to finish transfer of data, and the SPI communication interface is connected to the SPI interface on the mobile phone processor inside, and processor is read and write outside equipment by the SPI interface;
I
2C communication interface part is used for adopting I between multimedia handset and the mobile TV receiver
2The C agreement realizes that order transmits I
2The C communication interface is connected to the I on the mobile phone processor inside
2C interface, processor passes through I
2C interface is controlled outside equipment;
The power interface part is used to provide mobile TV receiver operation power supply, and power interface connects the mouth line of cellular phone power supplies.
The mobile TV receiver receives by antenna after the broadcast television signal, carries out demodulation, then the data of handling is flowed to mobile phone by the SPI interface, and the mobile phone internal processor receives after the data, operation such as shows accordingly.Same mobile phone passes through I
2The C data-interface sends order to the mobile TV receiver, and the inner relevant register parameter of mobile TV receiver is set, the operations such as transmitting-receiving of control mobile TV receiver.
SPI interface described in the utility model is a standard interface, and interface signal line comprises: data send holding wire, data acknowledge(ment) signal line, clock cable and chip selection signal line.
I described in the utility model
2The S interface is the interface of support standard and quick mode, and interface signal line comprises: data send holding wire, data acknowledge(ment) signal line and clock cable.
Power interface described in the utility model comprises positive source and negative pole, and voltage range between the 4.2V, directly offers the mobile TV receiver module at 3.6V.
Communications interface described in the utility model is the structure of cassette type or female type,
The of the present utility model setting on mobile phone adopted SPI, I
2C and power unit have been formed a general combined interface jointly, use this communication interface, multimedia handset not only can be read and write the register of control mobile TV receiver, obtain the operating state of mobile TV receiver or control its various operations, and receive the video that the mobile TV receiver sends easily by this interface, data such as audio frequency, in addition, multimedia handset can directly be given the power supply of mobile TV receiver, and great convenience is provided.
Description of drawings
Fig. 1 is the connection layout of mobile TV receiver as interior plug-in card and mobile phone;
To be the mobile TV receiver insert and the connection layout theory diagram of the present utility model of mobile phone by tail Fig. 2;
Fig. 3 is the deck schematic diagram of the mobile TV receiving card correspondence on the mobile phone board;
Fig. 4 is the socket schematic diagram of the mobile TV receiver connector correspondence on the mobile phone board.
Embodiment
Adopt I as Fig. 1, Fig. 2 the utility model
2C and SPI are the serial port communicating protocols of common two kinds of different mechanisms, wherein, and I
2C can control a plurality of equipment, only need two lines just can finish the small data quantity transmission, general mutual as control command, SPI is a synchronous serial ports Peripheral Interface, the device that is used for controller and periphery carries out full duplex, the serial communication that synchronous serial communication, SPI generally transmit as the high speed big data quantity.
By SPI communication interface, I
2C communication interface and power interface are combined into a general interface, and the interface that makes up is arranged on the multimedia handset, can receive radiovision and broadcast singal convenient and efficiently.Above-mentioned SPI interface is a standard interface, and interface signal line comprises: data send holding wire, data acknowledge(ment) signal line, clock cable and chip selection signal line; The SPI interface is used between multimedia handset and the mobile TV receiver, adopts the SPI agreement to finish transfer of data; The SPI communication interface is connected to the SPI interface on the mobile phone processor inside, and processor is read and write outside equipment by the SPI interface.
Above-mentioned I
2C interface is the interface of support standard and quick mode, and interface signal line comprises: data send holding wire, data acknowledge(ment) signal line and clock cable; I
2The C communication interface is used for adopting I between multimedia handset and the mobile TV receiver
2The C agreement realizes that order transmits; I
2The C communication interface is connected to the I on the mobile phone processor inside
2C interface, processor passes through I
2C interface is controlled outside equipment.
Power interface is used for directly providing mobile TV receiver operation power supply, and power interface connects the mouth line of cellular phone power supplies.Power interface comprises positive source and negative pole, voltage range at 3.6V between the 4.2V.
The mobile TV receiver receives by antenna after the broadcast television signal, carries out demodulation, then the data of handling is flowed to mobile phone by the SPI interface, and the mobile phone internal processor receives after the data, operation such as shows accordingly.Same mobile phone passes through I
2The C data-interface sends order to the mobile TV receiver, and the inner relevant register parameter of mobile TV receiver is set, the operations such as transmitting-receiving of control mobile TV receiver.
As shown in Figure 3, the combined interface that being used to of being provided with on the multimedia handset connects the mobile TV receiver can be the deck structure, the deck structure is the shell fragment contact, when the mobile TV interface card inserts in the mobile phone, by the fixing tv receiver card of deck fixed structure, mobile phone is connected with TV card by the connection deck shell fragment on the plate, provides SPI, I
2C signal, and power supply signal, tv receiver card is read and write or controlled to the mobile phone processor inside by the holding wire that connects, and receives radiovision and broadcasting in this way.
As shown in Figure 4, the combined interface that being used to of being provided with on the multimedia handset connects the mobile TV receiver can be a socket, and socket is fixed on a side of mobile phone board, and the mobile TV receiver is connected to the mobile phone socket by the connecting line that has with the corresponding plug of mobile phone, provide SPI, I
2C signal, and the connection of power supply signal, mobile telephone television receiver is read and write or controlled to the mobile phone processor inside by the holding wire that connects, and receives radiovision and broadcasting in this way.