CN102123139A - Portable multifunctional multimedia terminal system - Google Patents

Abstract

A portable multi-functional multimedia terminal system in the field of multimedia technology, including: video data acquisition module, audio data acquisition module, user operation input module, audio and video codec and central processing module, internal data storage module, video output module, audio output module, a wireless network transmission module, an Ethernet interface module, an RS232 interface module, an external data storage module, an infrared wireless transmission module, a USB interface circuit module, a power supply module and a clock module. , video on demand, and Internet browsing functions can replace multiple traditional terminal devices, greatly reducing the burden on users, and can complete multiple functions at the same time.

Description

Portable Multi-function Multimedia Terminal System

technical field

The invention relates to a device in the field of multimedia technology, in particular to a portable multifunctional multimedia terminal system.

Background technique

The multimedia terminal system is an integrated information system integrating telephone, television, media, and computer network. With the development of technology, there are more and more types of such electronic products on the market. Such as MP3 that can support audio playback, MP4 that can support video playback, and mobile phones that can support text messages, telephone calls, and Internet access. Most of these devices have their own defects and deficiencies. Or the function is too single, such as MP3 can only support audio playback, MP4 does not have functions such as text messages and telephone calls of mobile phones; or the system occupies too much resources, resulting in very expensive prices, such as some high-end mobile terminal products; The terminal also has defects such as too small screen size, poor video playback clarity, and inability to record information sources.

After searching the existing technology, it is found that most of the current multimedia terminal patents use TV sets or monitors as solutions to solve the problem of too small screens, such as Chinese patent application number: 200920056086.4, invention name: a multimedia terminal, and China Patent application number: 200820178227.5, a multimedia terminal, which uses a display as the image and video output device of the terminal; in addition, retrieved the Chinese patent application number: 200820178227.5, invention name: a multimedia terminal, this technology uses a keyboard connected through a USB interface as a User input equipment, because most of the input methods used by such terminals are relatively traditional, resulting in very inconvenient user operations; Chinese patent application number: 200910108980.6, invention name: an intelligent mobile network multimedia terminal, this technology focuses on the user's specific information The acquisition only solves the problem of users obtaining tourist attraction information while traveling, and this technology does not involve the functions of voice calls, video calls and video conferences based on the Internet; Chinese patent application number: 200720068676.X, invention name: a High-performance embedded handheld multimedia terminal, its design has similarities with this patent: it adopts I.MX processor as core processing, supports MP3, MPE64 playback and recording functions, and has good support for audio and video; uses sd card as external storage device. But the technical function is relatively single: it does not support voice conferencing, video calling and video conferencing; at the same time, it does not support functions such as Internet browsing, and this invention does not provide wired and wireless access to the internet; it supports TV mode and TFT liquid crystal LCD display , but doesn't mention support for Glasses Displays.

Contents of the invention

The present invention aims at the above-mentioned deficiencies in the prior art, and provides a portable multi-functional multimedia terminal system, which can realize functions including telephone collection, video conferencing, multimedia playback, video-on-demand, and Internet browsing, and can replace multiple traditional terminal devices, greatly Lighten the user's burden and be able to complete multiple functions at the same time.

The present invention is realized through the following technical solutions, and the present invention includes: video data acquisition module, audio data acquisition module, user operation input module, audio and video codec and central processing module, internal data storage module, video output module, audio output module , wireless network transmission module, Ethernet interface module, RS232 interface module, external data storage module, infrared wireless transmission module, USB interface circuit module, power supply module and clock module, of which: video data acquisition module and audio data acquisition module and audio and video The codec and central processing module are connected and the collected unencoded audio and video information is transmitted to the audio and video codec and central processing module. The user operation input module is connected with the infrared wireless transmission module and transmits user operation command information. Infrared wireless transmission The module is connected to the USB interface circuit module and transmits user operation command information, the USB interface circuit module is connected to the audio and video codec and central processing module, and the internal data storage module is connected to the audio and video codec and central processing module to transmit data information and instruction files information, the video output module and the audio output module are connected with the audio and video codec and the central processing module and transmit the decoded audio and video information to the video output module and the audio output module, and the wireless transmission module and the Ethernet interface module are connected with the audio and video codec The decoding and central processing modules are connected to realize the connection between the system and the Internet to realize network communication. The external data storage module is connected with the audio and video codec and the central processing module to transmit video, audio, pictures and program files. The clock module is connected with the audio and video codec and the central processing module. The processing modules are connected and output clock pulses, the RS232 interface module is used for debugging information input and output, and the power supply module provides power supply and level conversion of the system.

The video data acquisition module includes: an analog signal camera and a video analog-to-digital conversion unit connected thereto, which converts optical signals into analog electrical signals, and then converts the analog signals into digital signals by the analog-to-digital conversion module for audio and video Codec and central processing module.

Described audio-video codec and central processing module include: audio-video codec and central processing unit, wherein: audio-video codec encodes the audio-video data gathered by video and audio data collection module, coded The audio and video code stream is decoded and transmitted to the video output module and audio output module, and the central processing unit completes multi-information fusion processing and supports the coordinated operation of the entire system.

The video output module includes: a video digital-to-analog conversion unit and an analog electrical signal imaging unit.

The wireless network transmission module and the Ethernet interface module are respectively connected to the Internet.

The present invention uses a portable camera and a microphone as video and audio input to collect the user's scene, call content and camera; uses a glasses-type display as video output, and earphones as audio output to deliver audio and video information to the user; the terminal is small in size. The whole terminal system is portable and meets the requirements of portability; secondly, the present invention applies a hardware codec chip supporting the H.264 standard to encode and decode audio and video to realize real-time processing of high-definition video. Based on this technology, the picture quality and communication delay of the video conferencing can reach higher performance; the video playback is clear and smooth; in addition, the present invention uses an embedded system as a platform, based on a multitasking operating system as the software platform of the entire terminal system. On the basis of this operating system, we independently develop various software, including: communication software (with functions such as voice calls and video conferencing), Internet software, multimedia players, video recording software, etc.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

As shown in Figure 1, the present embodiment includes: video data acquisition module 1, audio data acquisition module 2, user operation input module 3, audio and video codec and central processing module 4, internal data storage module 5, video output module 6, Audio output module 7, wireless network transmission module 8, Ethernet interface module 9, RS232 interface module 10, external data storage module 11, infrared wireless transmission module 12, USB interface circuit module 13 and power supply module 14 and clock module 15, wherein: The video data acquisition module 1 and the audio data acquisition module 2 are connected with the audio and video codec and the central processing module 4 and transmit the collected unencoded audio and video information to the audio and video codec and the central processing module 4, and the user operates the input module 3 Connect with the infrared wireless transmission module 12 and transmit user operation command information, the infrared wireless transmission module 12 is connected with the USB interface circuit module 13 and transmit user operation command information, the USB interface circuit module 13 is connected with the audio and video codec and the central processing module 4 , the internal data storage module 5 is connected with the audio and video codec and the central processing module 4 and transmits data information and instruction file information, the video output module 6 and the audio output module 7 are connected with the audio and video codec and the central processing module 4 and decoded The audio and video information is transmitted to the video output module 6 and the audio output module 7, the wireless transmission module 12 and the Ethernet interface module 9 are connected with the audio and video codec and the central processing module 4 to realize the connection between the system and the Internet to realize network communication, external data The storage module 11 is connected with the audio and video codec and the central processing module 4 and transmits video, audio, pictures and program files, and the clock module 15 is connected with the audio and video codec and the central processing module 4 and outputs clock pulses. The RS232 interface module 10 is used for debugging information input and output, and is reserved as an interface of RS232 peripheral equipment. The power module 14 provides power supply and level conversion of the system.

Described video data acquisition module 1 comprises: analog signal camera and the video analog-to-digital conversion unit that is connected with it, adopts cmos camera to carry out photoelectric conversion in the present embodiment, optical signal is converted into analog electric signal; Then by analog-to-digital conversion The module converts the analog signal into a digital signal and sends it to the audio and video codec and the central processing module 4 .

The user operation input module 3 is connected with the USB interface circuit to the infrared wireless transmission module 12, so as to transmit the user's operations and commands to the terminal system to the terminal system.

The infrared wireless transmission module 12 and the user operation input module 3 are implemented in this embodiment by using a wireless keyboard and mouse control board with a USB interface and an iPazzPort transmission module of unisengroup.

Described audio-video codec and central processing module 4 include: audio-video codec and central processing unit, wherein: audio-video codec encodes the audio-video data collected by video and audio data acquisition module 2, to already The coded audio and video streams are decoded and transmitted to the video output module 6 and the audio output module 7, and the central processing unit completes multi-information fusion processing and supports the coordinated operation of the entire system.

Described audio and video codec and central processing module 4 adopt the MCIMX27VOP4A chip of freesacle company as audio and video codec and central processing module 4 in the present embodiment, IMX27 chip comprises the vpu unit and the support H.264 standard hardware codec inside arm9 is used to process and control the central processing unit of the entire multimedia system.

The video output module 6 includes: a video digital-to-analog conversion unit and an analog electrical signal imaging unit. In this embodiment, the video digital-to-analog conversion is realized by an ADV7125 chip, and the analog electrical signal imaging is realized by a glasses-type display.

The wireless network transmission module 8 and the Ethernet interface module 9 are respectively connected to the Internet.

The external data storage module 11 is used to expand the storage capacity of the system and realize more flexible and convenient data maintenance, update and transmission functions.

The working process of the device described in this embodiment is as follows:

VOIP communication implements voice calls, video calls and video conferencing functions based on SIP protocol. When connected to the conference server, the terminal system can conduct voice calls, video calls and video conferences with other terminal systems connected to the conference server.

A voice call is similar to a common ordinary telephone, and the two parties in the call can hear each other's voice information. Video calls can see the scene video of the other party on the basis of voice calls. The principle is: use the video capture module of the terminal system to collect local scene video information, and then transmit it to the other party through the network after encoding. A video conference is a video call in which multiple multimedia terminal systems participate together. There is a chairman in the meeting, and the meeting is initiated by the chairman. The chairman can control the mode of the meeting, including the chairman mode and the general mode. In the chairman mode, the chairman is the main venue of the meeting, and other users are forced to obtain the scene video of the chairman; in the general mode, each user can switch the video scene to watch according to their own needs.

Internet browsing realizes the mainstream Internet browsing function, and users can browse the Internet to obtain the latest network information in an environment with a wired network or a wireless network. For example: through the Internet software, you can easily visit the google homepage and obtain the network search service. In addition, the multimedia terminal system also supports streaming media on-demand services on the network, playing network video streams.

Multimedia player realizes the playback function of audio and video multimedia files. It can play the multimedia files stored in the storage medium of the multimedia terminal, and can also play the multimedia files in the external memory card. The audio format supported by the multimedia player software is MP3 format, and the supported video format is currently mainstream MP4 format and AVI format encoded with H.264 standard.

The video recording realizes the functions of taking pictures and recording videos. The video acquisition module is used as the image and video input source, and the acquired video is encoded by the encoding module, and then stored in the terminal storage medium to achieve the function of video camera.

Claims (5)

1. portable multi-function multimedia terminal system, it is characterized in that, comprise: the video data acquiring module, the audio data collecting module, the user operates input module, audio/video encoding/decoding and central processing module, the internal data store module, the video output module, the audio frequency output module, wireless network transmission module, the Ethernet interface module, the RS232 interface module, the external data storage module, the infrared radio transport module, the usb circuit module, power module and clock module, wherein: the uncoded sound that video data acquiring module and audio data collecting module link to each other and will collect with audio/video encoding/decoding and central processing module, video information transfers to audio/video encoding/decoding and central processing module, the user operates input module and links to each other with the infrared radio transport module and the transmitting user operation command information, the infrared radio transport module links to each other with the usb circuit module and the transmitting user operation command information, the usb circuit module links to each other with audio/video encoding/decoding and central processing module, the internal data store module links to each other with audio/video encoding/decoding and central processing module and transmitting data information and command file information, the video output module links to each other with audio/video encoding/decoding and central processing module with the audio frequency output module and with decoded sound, video information transfers to video output module and audio frequency output module, wireless transport module is realized network service with audio/video encoding/decoding and the continuous realization system of central processing module with being connected of the Internet with the Ethernet interface module, the external data storage module links to each other with audio/video encoding/decoding and central processing module and transmission of video, audio frequency, picture and program file, clock module links to each other with audio/video encoding/decoding and central processing module and exports clock pulse, the RS232 interface module is used for the Debugging message input and output, and power module provides the power supply and the level conversion of described system.

2. portable multi-function according to claim 1 multimedia terminal system, it is characterized in that, described video data acquiring module comprises: analog signal camera and be attached thereto the video AD conversion unit that connects, light signal is converted to analog electrical signal, transfers analog signal to digital signal by analog-to-digital conversion module again and give audio/video encoding/decoding and central processing module.

3. portable multi-function according to claim 1 multimedia terminal system, it is characterized in that, described audio/video encoding/decoding and central processing module comprise: video and audio coding and central processing unit, wherein: video and audio coding is to being encoded by the audio, video data of video and the collection of audio data collecting module, the audio-video code stream of having encoded is decoded and transferred to video output module and audio frequency output module, and central processing unit is finished the warm processing of many information and is supported the Collaboration of whole system.

4. portable multi-function according to claim 1 multimedia terminal system is characterized in that, described video output module comprises: video D/A conversion unit and analog electrical signal image-generating unit.

5. portable multi-function according to claim 1 multimedia terminal system is characterized in that described wireless network transmission module is connected with the Internet respectively with the Ethernet interface module.

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