CN201044470Y - TV connected to Wi-Fi - Google Patents

Abstract

The utility model discloses a television set interconnected with a wireless network, relates to a television set interconnected with a wireless network, in order to solve the problem that the network access equipment of the existing television is not easy to replace; the utility model includes a digital signal processing unit The TV body is provided with a USB interface connected to the digital signal processing unit in the TV body on the TV body, and the USB interface is connected with a USB wireless network card arranged outside the TV body, and the USB wireless network card receives it The data is transmitted to the digital signal processing unit of the TV body through the USB interface. The utility model is mainly applied to the interconnection between the TV set and the wireless network.

Description

TV connected to Wi-Fi

technical field

The utility model relates to a television set, in particular to a television set interconnected with a wireless network.

Background technique

In recent years, TV technology has been greatly popularized and developed. People use various technical means to endow TV with more functions, so that TV can get rid of the simple way of receiving and displaying video signals and become a TV. Multifunctional household appliances. For example, add a USB interface and a compressed image decoder (such as JPEG, MEPG1/2/4 standard format compressed image decoder) to the TV to realize the connection between the TV and digital products such as digital cameras, video cameras, U disks, MP3, etc. Multimedia files stored in digital products such as digital cameras and camcorders can be imported into the TV for decoding and playing, so that people can use the large screen of the TV and good sound effects to appreciate digital information from mobile digital products.

With the development of network technology, the resources on the wireless network are becoming more and more abundant, and due to many favorable conditions such as the large screen and high image quality of the TV, relevant technical personnel have begun to develop and use the TV to browse and obtain rich resources on the wireless network. Technology. At present, there are two main ways to browse and obtain network resources by means of TV:

1. Realize the way of TV browsing network resources through set-top box (STB, Set-top Box)

Connect a set-top box with a modem or a network card to the TV. With the support of software, the set-top box is connected to the wireless network. The set-top box receives authorized digital TV services, Chinese display, basic electronic program guide EPG (program preview), software upgrades, and encryption. Information reminder, payment service, data broadcasting, broadcast video on demand and local interactive services, the TV can meet the functions of video on demand, Internet browsing service, e-mail sending and receiving, interactive game and IP telephone service through the set-top box. Although the set-top box can realize the interconnection between the TV and the wireless network, at present, the set-top box basically belongs to the category of the basic type, and the applications are mainly data broadcasting, paid services and simple game downloads. It is well applied in services such as Internet browsing, email sending and receiving, and interactive games, and for users, the cost of purchasing a set-top box is relatively high, and it is not very convenient to use.

2. Through the built-in PCI wireless network card to realize the way of TV browsing network resources

Patent No. 200420099126.0 of the Chinese patent "High-End TV" (publication date 2006.01.25, publication number CN2754294), discloses a television set with a built-in PCI network card for browsing network resources. As shown in Figure 1, this patent adds a PCI wireless network card and CPU inside the TV, the PCI wireless network card is connected to the CPU through the PCI bus, the control bus and the clock bus, and the PCI wireless network card is connected to the external network cable through the network interface, which can realize The interconnection between TV and external network. Compared with the above-mentioned first method, this method effectively reduces the cost, realizes the interaction between the TV and the wireless network, and can perform Internet browsing services, send and receive e-mails, and interactive games. However, due to the rapid development of wireless network technology, wireless communication protocol standards will also be updated faster, and wireless network cards will also be updated faster to adapt to new wireless communication protocol standards. When users need to update wireless network cards, this built-in The wireless network card is not easy to update. If it is necessary to update, the TV needs to be replaced, or a professional must disassemble and update it. This is troublesome for most users.

Utility model content

The problem to be solved by the utility model is to provide a TV set interconnected with a wireless network, which can facilitate users to replace network access devices, and make the TV set match with the network technology which is updated synchronously.

In order to solve the above problems, the utility model provides a TV set interconnected with a wireless network, which includes a TV body with a digital signal processing unit, and a TV body connected to the digital signal processing unit in the TV body. USB interface, the USB interface is connected with the USB wireless network card arranged outside the TV body, and the USB wireless network card transmits the data it receives to the digital signal processing unit of the TV body through the USB interface.

Specifically:

The digital signal processing unit includes an embedded microprocessor connected by an internal bus, an integrated streaming media decoding digital processor and a transparent code stream analog and digital encoder, and the USB interface of the TV body is connected to the embedded microprocessor by an internal bus.

The embedded microprocessor receives the streaming digital signal from the wireless network through the USB interface of the TV body and the USB wireless network card, and transmits the received streaming digital signal to the integrated streaming decoding digital processor through the internal bus for decoding. The integrated streaming media decoding digital processor sends the decoded transparent code stream to the transparent code stream analog-digital encoder, and the transparent code stream analog-digital encoder re-encodes and outputs displayable audio and video signals.

The embedded microprocessor of the preferred solution includes: a hardware chip and underlying system software; the hardware chip includes: a CPU, a network protocol communication unit, a memory, a power supply unit and an interface unit; a network protocol communication unit, a memory, a power supply unit and The interface units are respectively connected to the CPUs.

Specifically, the embedded microprocessor is a 32-bit embedded microprocessor. The memory is flash memory FLASH, synchronous dynamic random access memory SDRAM, and electrically programmable read-only memory EPROM.

Because the utility model adopts the USB interface to connect the external USB wireless network card to realize the interconnection between the TV set and the wireless network, and the USB interface has good versatility, so the user can insert any USB wireless network card through the USB interface of the TV set, thereby Realized the separation of TV and wireless network card. In this way, the user of the TV can replace the USB wireless network card without changing the existing TV, or the driver program of the USB wireless network card stored in the program memory of the TV and the underlying system of the embedded microprocessor Software and application program software, upgrade the USB wireless network card in the TV and the network protocol communication unit of the TV, so that the TV can match the network technology that is updated synchronously; Development and dismantling to replace the network access device or replace the TV. This further facilitates people to enjoy rich streaming media resources on the wireless network by using the larger display screen and good sound effect of the TV set.

Description of drawings

FIG. 1 is a schematic diagram of the internal structure of an existing TV interconnected with a wireless network;

Fig. 2 is the general structure schematic diagram of the television of the utility model and wireless network interconnection;

Fig. 3 is a schematic diagram of the internal structure of the television set with a USB interface shown in Fig. 2;

Fig. 4 is a schematic diagram of the logic structure of the embedded microprocessor chip of the television shown in Fig. 3;

Fig. 5 is a structural diagram of an embodiment of the application of the utility model and a TV set interconnected with a wireless network.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in detail:

As shown in Figure 2, the TV set interconnected with the wireless network of the present invention includes a TV body 20 with a digital signal processing unit 23, and a TV body 20 is provided with a TV body connected to the digital signal processing unit 23 in the TV body 20. The USB interface 21, the USB interface 21 is connected with the USB wireless network card 22 arranged outside the TV body 20, and the USB wireless network card 22 transmits the data it receives to the digital signal processing of the TV body 20 through the USB interface 21 Unit 23.

Because the USB wireless network card 22 is set outside the TV body 20, and the USB interface 21 has good versatility, the user can connect any USB wireless network card 22 through the USB interface 21 of the TV set, and interconnect the wireless network through the USB wireless network card 22. The utility model preferably realizes the plug-in connection between the TV body 20 and the USB wireless network card 22 . In this way, the user of the TV can change the USB wireless network card without changing the existing TV, or only upgrade the driver software of the USB wireless network card in the TV, so that the TV can be compatible with the network technology of synchronous upgrading and updating. Matching; prevent TV users from disassembling and replacing network access devices or TVs due to the development and changes of wireless network technology.

As shown in Figure 3, the digital signal processing unit 23 in the TV body 20 can be made up of following parts: embedded microprocessor 31, integrated streaming media decoding digital processor 32 and transparent code stream analog-digital encoder 33; USB interface 21 of USB interface 21 is connected with embedded microprocessor 31 by internal bus, and embedded microprocessor 31 is connected with integrated streaming media decoding digital processor 32 by internal bus, and described integrated streaming media decoding digital processor 32 is connected with transparent code by internal bus The stream analog digital encoder 33 is connected.

The embedded microprocessor 31 receives the streaming digital signal from the wireless network through the USB interface 21 and the USB wireless network card 22 of the TV body 20, and transmits the received streaming digital signal to the integrated streaming media through the internal bus. The decoding digital processor 32 decodes, and the integrated streaming media decoding digital processor 32 transmits the decoded transparent code stream to the transparent code stream analog-digital encoder 33, and the transparent code stream analog-digital encoder 33 re-encodes the displayable audio Video signals (such as video, super video, color difference, digital color difference, etc.) are output to the audio and video output display unit for display.

The internal bus between the USB interface 21, the embedded microprocessor 31, the integrated streaming media decoding digital processor 32, and the transparent code stream analog and digital encoder 33 can be an internal data bus, but is not limited to the internal data bus.

The preferred solution embedded microprocessor is a 32-bit embedded microprocessor, which can use embedded DSP (Digital Signal Processor), MPU (Microprocessor Unit, microprocessor), SOC (System on Chip, system on chip), etc. , the biggest feature of the microprocessor is single-chip, small size, low power consumption and cost, and strong reliability, so it is more suitable for the processor chip inside the TV. Of course, with the development of technology, 64-bit chips can also be used. Microprocessor to achieve high processing speed.

As shown in Figure 4, 32 embedded microprocessors comprise: hardware chip and underlying system software; Described hardware chip comprises: CPU 41, network protocol communication unit 42, memory 43, power supply unit 44 and interface unit 45. The network protocol communication unit 42 , memory 43 , power supply unit 44 and interface unit 45 are respectively connected to the CPU.

The power supply unit 44 is used to supply power to the CPU 41 processor, and the CPU 41 calls the network protocol communication unit 42, the memory 43 under the control of the underlying system software (the underlying system software provides the operating system kernel, various hardware drivers and application software). And the interface unit 45 works.

The network protocol communication unit here supports the TCP/IP protocol, and the memory can be EPROM (electrically programmable read-only memory), FLASH (flash memory) or SDRAM (synchronous dynamic random access memory).

Among them, EPROM is used for upgrade and expansion; FLASH is used to store underlying system software, drivers and application software, etc., and the content can be retained when the TV is powered off; SDRAM is mainly used to store application data and audio and video decoding. The application software includes applications stored locally and downloadable application programs, and various functions of the television are realized through the application programs.

In the present utility model, USB wireless network card 22 can be the wireless network card of USB 2.0/1.1/1.0 version, and this USB interface can adopt the chip that the model that TDI Company produces is 0TG242LP, and this USB wireless network card 22 can support IEEE 802.11b/ gWireless network transmission protocol. The working principle of the TV set interconnected by the utility model and the wireless network is as follows:

Connect the USB2.0 wireless network card to the USB2.0 physical interface of the TV, and the USB2.0 wireless network card receives the data transfer stream packaged with the USB protocol standard from the wireless network; the transfer stream is transmitted through the USB2.0 interface of the TV Up to 32-bit embedded microprocessor, the 32-bit embedded microprocessor divides the entire transport stream into 3 layers for processing: USB transport stream protocol processing layer, TCP/IP transport stream protocol processing layer, streaming media transport stream protocol processing layer; The transport stream protocol processing layer processes the received USB data packets and restores the original TCP/IP protocol data; the TCP/IP transport stream protocol processing layer unpacks the TCP/IP protocol data and restores them to stream media packets.

The streaming media transmission stream protocol processing layer processes the streaming media data packets, and transmits the PS (Program Stream) obtained after processing to the integrated streaming media decoding digital processor through the internal data bus for decoding processing.

The integrated streaming media decoding digital processor sends the decoded transparent code stream to the transparent code stream analog digital encoder, and the transparent code stream analog digital encoder re-encodes the displayable audio and video signals (such as video, super video, color difference, Digital color difference, etc.) are output to the audio and video output display unit for display.

Along with the development of wireless network interconnection technology and the appearance of new wireless network interconnection protocol, will produce new USB wireless network card, the specific method that TV set of the present utility model carries out upgrading for new wireless network interconnection protocol is:

Under the control of the underlying system software, the 32-bit embedded microprocessor reads the upgrade program stored in the USB mobile storage device (such as U disk, MP3, digital camera, mobile hard disk, etc.) into the TV through the USB interface of the TV. In the memory of the 32-bit embedded microprocessor, the upgrade of the wireless network card and the network protocol communication unit conforming to the new protocol standard is completed.

Of course, using the FLASH memory to update the underlying system software, driver program and application software stored on it in an online manner can also achieve the purpose of upgrading the USB wireless network card and the network protocol communication unit.

Fig. 5 is a typical example that the utility model is applied in the family, and the wireless local area network in the family generally comprises:

The TV set in the living room and connected to the wireless network (can be connected to the wireless local area network in the home through the wireless network card), the CENTRINO (Centrino) mobile computer in the bedroom, and the home media center (home PC), wireless router, ADSL in the study modem.

The TV set in the living room is respectively wirelessly connected with the mobile computer in the bedroom and the home media center in the study through the wireless router; the TV set in the living room is connected with the ADSL wireless network through the wireless router and the ADSL modem.

Through the above-mentioned connection method, it is possible to play and control the streaming media content in the storage device of the home media center on the TV, or the streaming media content in the storage device of the CENTRINO mobile computer in the bedroom, or it can be realized on the TV through a wireless router Wifi.

Certainly, also can utilize the USB interface of above-mentioned TV set to connect various mobile storage devices (as mobile hard disk, MP3, digital camera, digital camcorder, PDA, mobile phone, card reader, etc.), play in these mobile storage devices Streaming media files make the TV set of the present utility model have more diverse functions, for example, watch pictures in JPEG format, play music in formats such as MP3, WMA, RM, and play audio-visual files of MPEG1/2/4 protocols (such as *. MP3, *.WMA, *.JPG, *.DIVX, *.DAT, *.VOB, etc.).

Claims (6)

1. A television set interconnected with a wireless network, comprising a television body with a digital signal processing unit, characterized in that: the television body is provided with a USB interface connected to the digital signal processing unit in the television body, the USB The interface is connected with a USB wireless network card arranged outside the TV body. 2. The TV set interconnected with wireless network according to claim 1, characterized in that: said digital signal processing unit includes an embedded microprocessor connected by an internal bus, an integrated stream media decoding digital processor and a transparent bit stream simulation A digital encoder, the USB interface of the TV body is connected to the embedded microprocessor through an internal bus. 3. The television set interconnected with wireless network according to claim 2, characterized in that: said embedded microprocessor comprises: hardware chip and underlying system software; said hardware chip comprises: CPU, network protocol communication unit, memory , a power supply unit and an interface unit; the network protocol communication unit, the memory, the power supply unit and the interface unit are respectively connected to the CPU. 4. The TV interconnected with wireless network according to claim 2 or 3, characterized in that: the embedded microprocessor is a 32-bit embedded microprocessor. 5. The TV set interconnected with wireless network according to claim 3, characterized in that: the memory is FLASH, SDRAM, and EPROM. 6. The TV set interconnected with wireless network according to claim 3, characterized in that: the driver program of the USB wireless network card, the underlying system software and the application program software are stored in the memory.

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