CN1266938C - Broadband TV telephone - Google Patents
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- CN1266938C CN1266938C CN 02146210 CN02146210A CN1266938C CN 1266938 C CN1266938 C CN 1266938C CN 02146210 CN02146210 CN 02146210 CN 02146210 A CN02146210 A CN 02146210A CN 1266938 C CN1266938 C CN 1266938C
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Abstract
The present invention discloses a broadband television telephone which comprises a camera head used for picking up local images and an image monitor for displaying far-end images. The broadband television telephone also at least comprises: a terminal host machine, a hand-held unit and a charging seat, wherein the terminal host machine is used for processing voice image data and performing a control function; the hand-held unit is used for conversation and remotely controlling the terminal host machine; the charging seat is used for protocol conversion and charging for the hand-held unit; far-end voice image data from the charging seat is received by the terminal host machine, the received local voice data from the hand-held unit and the local images of the camera head are transmitted to the charging seat, and far voice data is transmitted to the hand-held unit in a wireless mode. Wireless video communication can be realized on line at real time by utilizing resources of a broadband network by the present invention.
Description
Technical field
The present invention relates to video-phone system, relate in particular to a kind of Broadband TV phone of on broadband networks, realizing.
Background technology
Along with International Telecommunication Association organizes (ITU) at the announcement of the ITU-H.32X series international standard of video-phone system and the demand in market, it will be a kind of irreversible trend that video telephone replaces traditional voice call.
According to the implementation of video telephone in the prior art, video telephone can be divided into: modes such as traditional liquid crystal (LCD) type video telephone, cooperation television set use type video telephone, cooperation personal computer use type video telephone.In addition, according to the difference of Channel Transmission mode, can be divided into types such as public telephone network (PSTN) type, integrated service numeric type (ISDN) type, tailored version.
Referring to shown in Figure 1, traditional LCD video telephone is compared with ordinary telephone set, a LCD display and camera have been increased, from the LCD display that the video signal of far-end PSTN or the isdn interface by telephone set exports telephone set to, the local image signal of camera picked-up is transferred to far-end by the PSTN or the isdn interface of telephone set.This traditional LCD video telephone adopts 1/4th public intermediate forms (QCIF), and the picture format size is 176*122, and in the television system standard, if adopt pal mode, then frame per second was 12.5 frame/seconds; If adopt the TSC-system formula, then frame per second was 15 frame/seconds.
Referring to shown in Figure 2, the video telephone that cooperates television set to use is compared with traditional LCD video telephone, difference is to adopt television set to show the distal view picture as picture monitor, video telephone set has two-path video input interface and two-path video output interface, wherein, video input interface can connect two external cameras, and video output interface can connect television set or video tape recorder.
But, above-mentioned traditional LCD video telephone and the video telephone that cooperates television set to use all are transporting speech and images on traditional narrow-band communications network, be subjected to the restriction of bandwidth, can only transmit the image of little picture, low frame per second, can't select the video camera of different class, cause image blurring unclear, move discontinuous, the resolution of image, brightness and color all can't be satisfactory, can only see the other side's head shoulder image, can't see the other side's action and background.In addition, traditional LCD video telephone display screen is also very little, can not satisfy consumer's vision requirement well.
Referring to shown in Figure 3, the visible telephone interface schematic diagram of Fig. 3 for cooperating PC to use realized video telephone by software on the PC and modulator-demodulator (Modem).The display of PC is as picture monitor, show the distal view picture, video camera links to each other with PC by high-speed serial bus (USB), V.34Modem PC uses the RS232 serial line interface to connect V.90 or, V.90 or V.34Modem connect public phone exchanges network (PSTN) by ordinary telephone line, perhaps use Ethernet card to pass through cable modem (Cable Modem) and be connected to the Internet net, perhaps use Ethernet card to pass through any one Digital Subscriber Loop (xDSL) modulator-demodulator and connect the Internet net, perhaps use the RS232 serial line interface to connect isdn network by terminal adapter (ta).Though the video telephone that this cooperation PC uses can utilize broadband resource, exist turn on or off time length, complicated operation, can not be forever online, use inconvenient, as the to be subjected to the PC application high inadequately many shortcomings of restriction, popularity rate.
In addition, the voice of above-mentioned three kinds of video telephone receive and hop owing to all use plain old telephone, the user is too near from the video camera distance, the user is can't be free movable, inconvenient shortcoming receives calls so exist.
Summary of the invention
The object of the present invention is to provide a kind of Broadband TV phone, to utilize the resource of broadband network, the wireless video communication is realized on real-time online ground.
For achieving the above object, the present invention adopts following technical scheme:
A kind of Broadband TV phone comprises the picture monitor that is used to absorb the camera of local image and shows the distal view picture, and this Broadband TV phone at least also comprises: end host, handheld unit and the cradle that links to each other with external communication network, wherein,
The control that described end host is used for the processed voice view data and communicates, link to each other respectively with picture monitor with described camera, when the remote data that receives from external communication network, reception is from the far-end compressed image speech data of described cradle with local voice data and the communication control information of wireless mode reception from described handheld unit, and the far-end compressed image voice data decompression that receives contracted, with the local voice data that receive, and compress processing from the local view data of camera, when external communication network sends local data, local image speech data after processing is compressed in described cradle transmission, with the far-end speech data of wireless connections mode after described handheld unit sends described communication control information and carries out decompression, and the far-end view data after decompression is carried out in picture monitor output;
Described handheld unit is used for conversation, when the remote data that receives from external communication network, receive described communication control information and from the far-end speech data of described end host with wireless mode, and these far-end speech data are converted to voice signal, when external communication network sends local data, send described communication control information with wireless mode to described end host, and gather and to send to described end host after the dialect tone signal is converted to described local voice data;
Described cradle is used for translation-protocol and is the handheld unit charging, when external communication network sends local data, reception is from the local image speech data of described end host and carry out corresponding protocol conversion back and deliver to far-end by network, when the remote data that receives from external communication network, the distal view of automatic network carries out being sent to described end host after the corresponding protocol conversion as speech data in the future.
Described end host comprises the end host radio communication unit at least, video input interface, video output interface and compression coding and decoding unit, wherein, when the remote data that receives from external communication network, described end host radio communication unit is used to receive from the far-end speech data of cradle and far-end view data and from the local voice data of handheld unit and control above-mentioned data and export described compression coding and decoding unit to, this compression coding and decoding unit exports picture monitor to by described video output interface after with described far-end image data decoding, to be sent to described handheld unit by described end host radio communication unit after the described far-end speech data decode, described local voice data are compressed the back be sent to described cradle by described end host radio communication unit, when external communication network sends local data, be sent to described cradle from the video camera communication unit, when external communication network sends local data, after inputing to described compression coding and decoding unit, after encoding to it, described compression coding and decoding unit just is sent to described cradle from the local view data of video camera by described end host radio communication unit by described video input interface;
Described handheld unit comprises the hand wireless communication unit at least, the encoding and decoding speech unit, the control information processing unit, voice-input unit and voice-output unit, wherein, when external communication network sends local data, described voice-input unit is used to receive described local voice data and it is inputed to described encoding and decoding speech unit, described encoding and decoding speech unit is used for above-mentioned local voice data are encoded and it is inputed to described hand wireless communication unit, when the remote data that receives from external communication network, described hand wireless communication unit also receives from the far-end speech data of described end host radio communication unit and with it and exports described encoding and decoding speech unit to, and described encoding and decoding speech unit is used for the said distal ends speech data is decoded and exported it to described voice-output unit; Described control information processing unit is connected with described hand wireless communication unit, and the control information of importing is inputed to the hand wireless communication unit;
Described cradle is included as the power module that handheld unit provides charge power supply at least, network interface, the bridge module and the cradle radio communication unit that are used for translation-protocol, wherein, when external communication network sends local data, described cradle radio communication unit is used to receive from the local voice data of described end host radio communication unit and local view data and with it and exports described bridge module to, described bridge module is used for the local voice data and the local view data that receive are carried out protocol conversion and exported it to far-end by described network interface, when the remote data that receives from external communication network, come the speech data and the far-end view data of automatic network far-end to input to described bridge module by described network interface, this bridge module inputs to described cradle radio communication unit with it after the data that receive are carried out protocol conversion;
Described end host radio communication unit links to each other by wave point with described hand wireless communication unit, also links to each other by wave point with described cradle radio communication unit.
Wherein, the frequency range of described end host radio communication unit, hand wireless communication unit and the employing of cradle radio communication unit all is the analog cordless telephone frequency range.
Described end host radio communication unit, hand wireless communication unit and cradle radio communication unit are respectively the Bluetooth control chip.
Described network interface can adopt the lan interfaces that meets IEEE802.3, the wireless lan interfaces that meets IEEE802.11b or bluetooth micro-cellular network interface.
Described picture monitor is a cathode-ray tube display, perhaps is TFT thin film transistor monitor, perhaps is LCD.
Described video input interface can be for being used to connect the usb host interface of USB camera or USB mouse or USB keyboard.
Described picture monitor further comprises an interlock control interface, and described end host further comprises the interlock control interface that is used for the picture monitor mode switch, and this interface links to each other with the interlock control interface of described picture monitor.
Further, described compression coding and decoding unit comprises video encoder at least, Video Decoder, be used for the digital signal processing chip that data compression and decompression are handled, be used for stored program read-only memory and be used for data cached random asccess memory, wherein, described read-only memory, described random asccess memory links to each other with described digital signal processing chip respectively, when external communication network sends local data, described local view data from camera is after inputing to described video encoder, this video encoder is encoded to described local view data and is exported it to described digital signal processing chip, this digital signal processing chip compresses the data that receive and it is inputed to described end host radio communication unit, described digital signal processing chip also receives from the data in the described end host radio communication unit when the remote data that receives from external communication network, and exporting the distal view in the data to described Video Decoder after as data decompression, this Video Decoder is decoded to the data that receive and is exported it to described picture monitor.
Described digital signal processing chip also comprises the picture composition module that realizes picture-in-picture function, information extraction modules, wherein, described picture composition module with local view data and the distal view after decompressing export the video inputs of described picture monitor after as data combination to, described information extraction modules is the picture and text information in the automatic network data flow and the video inputs and the audio input end that export described picture monitor after information of voice prompt is separated respectively in the future, in addition, information extraction modules also can be extracted from the calling telephone number data in the network data flow and with it and export the video inputs of described picture monitor to, and information extraction modules can also be extracted from the local ip address data in the network data flow and with it and export the video inputs of described picture monitor to.
Described end host comprises that further one carries out the Audio Processing Unit of voice digital-to-analogue conversion under the hand-free call state, this Audio Processing Unit comprises the audio frequency analog to digital converter, audio digital to analog converter, the acoustic echo canceler module, microphone, wherein, when external communication network sends local data, described microphone inputs to described audio frequency analog to digital converter with the local voice signal, carry out inputing to described acoustic echo canceler module after the analog-to-digital conversion, described acoustic echo canceler module carries out inputing to described compression coding and decoding unit after echo cancelltion is handled, when the remote data that receives from external communication network, described acoustic echo canceler module also receives the far-end speech data from described compression coding and decoding unit, it is being carried out export it to described audio digital to analog converter after echo cancelltion is handled, this audio digital to analog converter carries out exporting to after the digital-to-analogue conversion audio input end of described image display.
Described encoding and decoding speech unit comprises the audio codec that is used for the speech data encoding and decoding at least, the acoustic echo canceler processing module, described voice-input unit comprises a microphone at least, described voice-output unit comprises a loud speaker at least, wherein, when external communication network sends local data, the local voice data that described microphone receives input to described audio codec, after encoding, this audio codec exports described acoustic echo canceler processing module to, this acoustic echo canceler processing module carries out exporting described hand wireless communication unit to after echo cancelltion is handled, when the remote data that receives from external communication network, described acoustic echo canceler processing module also receives the far-end speech data from the hand wireless communication unit, this acoustic echo canceler processing module exports described loud speaker it being carried out export it to described audio codec after echo cancelltion is handled to after this audio codec is decoded again.
Described control information processing unit comprises at least and is used to the display circuit keying in the key circuit of control command and be used for the display terminal host information that described key circuit links to each other with described hand wireless communication unit respectively with display circuit.
Described bridge module comprises the central processing unit that is used for protocol conversion at least, the telephone interface circuit of simulative telephone interface is changed and provided to realization analog telephone and IP phone, be used to store the read-only memory of the required program of central controller, be used to store the read-only memory at random and the network controller of data, wherein, be used to store the read-only memory of the required program of central controller, the read-only memory at random that is used to store data links to each other with central processing unit respectively, described telephone interface circuit is connected with central processing unit, the simulative telephone interface of this telephone interface circuit links to each other with plain old telephone, when the remote data that receives from external communication network, described network controller will export central processing unit to from the far-end view data and the far-end speech data of described network interface, after central processing unit is converted to protocol data corresponding to the cradle radio communication unit with said distal ends view data and far-end speech data, export described cradle radio communication unit to, when external communication network sends local data, described central processing unit also receives from the local view data of described cradle radio communication unit and local voice data, after this central processing unit is converted to protocol data corresponding to network with above-mentioned local view data and local voice data, export described network controller to, this network controller exports the data that receive to far-end by described network interface.
Described central processing unit also comprises use dual-tone multifrequency agreement exchange IP address and adopts the H.323 agreement or the pseudo-telephone number calling module of startup agreement communication of conversing that described telephone interface circuit exports the public telephone network setup requests to described pseudo-telephone number calling module.
Owing to adopted technique scheme, the present invention has the following advantages compared to the video telephone that conventional visualization phone, cooperation television set use:
1) the present invention cooperates the development of broadband network, both can use on the net in the arrowband, also can be at the broadband online operation, and adopt IP-based voice (Voice over IP) and IP-based image technology such as (Videoover IP), reduce communication cost greatly.
2) by the digital processing chip in the end host, adopt ripe image processing algorithm, higher picture quality is provided on picture monitors such as general television set, make picture format reach CIF (352*288) or 4CIF (704*576), frame per second reaches 25 frames/second PAL or 30 frames/second NTSC, image is clear and smooth more, eliminated animation effect, and realized functions such as picture-in-picture function, caller number display, caller IP address demonstration by picture composition module, information extraction modules in the digital processing chip.
3) owing to having adopted wireless communication interface between handheld unit, end host, the cradle, enlarge the field range of video telephone, no longer be confined to a head shoulder image, broken away from the restriction of head shoulder image, can see the other side's action and background.
4) because end host provides various interface, strengthened the function of this broadband video telephone, use more flexible, for example video output interface is a USB interface, the video camera that can connect different class is to improve the quality of image, also can connect USB mouse and keyboard, realize the function of sending and receiving e-mail; The video input interface that provides by end host makes this video telephone can use television set as picture monitor, has realized real-time online, has increased the time of standby, has promoted the application of video telephone; By controlling the pattern that the interlock interface can change picture monitor, realize the mode switch that television set receiving mode and video telephone image show.
Description of drawings
Fig. 1 is traditional LCD video telephone theory diagram;
The video telephone theory diagram of Fig. 2 for cooperating television set to use;
The video telephone theory diagram of Fig. 3 for cooperating PC to use;
Fig. 4 is a general illustration of the present invention;
Fig. 5 adopts the conversation control unit theory diagram of Bluetooth technology for the present invention;
Fig. 6 is an end host theory diagram of the present invention;
Fig. 7 is for realizing the PIP functional schematic;
Fig. 8 provides multimedia IVR the schematic diagram of function for end host;
Fig. 9 shows schematic diagram for calling telephone number;
Figure 10 shows schematic diagram for the IP address;
Figure 11 is for supporting the schematic diagram of IP address dialing;
Figure 12 is the cradle schematic diagram.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Referring to shown in Figure 4, Fig. 4 is a general illustration of the present invention.Video telephone of the present invention comprises handheld unit 401, end host 402, cradle 404, picture monitor 405, video camera 403, wherein, end host 402 is finished video and audio compression, decompression, and be provided for connecting picture monitor 405 as the video and the audio output interface of television set or video tape recorder, be used to be equipped with the video camera 403 of different class video input interface, be used for and cradle 404 between images and speech data wave point, be used for and handheld unit 401 between the wave point of transmitting audio data and control command.Handheld unit 401 not only is used for conversation, also is used for remote terminal main frame 402.Above-mentioned wave point can be with 45M or 48M frequency range, perhaps 1900M frequency range, and perhaps technology such as bluetooth can be used Frequency Division Duplexing (FDD) (FDD), time division duplex technology such as (TDD); Cradle 404 has the function to handheld unit 401 charging, and the common phone analog interface circuit is provided, and serves as bridge and finish the corresponding protocol conversion, and is connected with broadband network with xDSL Modem, Cable Modem or TA etc. by network interface.This network interface is the LAN that meets IEEE802.3, perhaps the WLAN of IEEE802.11b, the perhaps network interface of bluetooth micro-cellular network (Piconet); Available wired or wireless mode is carried out voice, image, data communication between end host 402 and the cradle 404.
Be example to adopt Bluetooth technology below, introduce know-why of the present invention.The present invention comprises 3 parts: handheld unit, end host, cradle.Transmit between voice and control data, end host and the cradle by Bluetooth technology transmission voice, view data by Bluetooth technology between handheld unit and the end host.End host is a main control unit, mainly finish look, audio compression and decompression.Cradle is also finished the forwarding of bluetooth microcellulor to local ethernet except being used for to the handheld unit charging.
Referring to shown in Figure 5, Fig. 5 is for adopting the handheld unit schematic diagram of Bluetooth technology.This handheld unit comprises hand wireless communication unit 514, encoding and decoding speech unit 511, control information processing unit 510, phonetic entry processing unit 512 and voice-output unit 513, wherein, radio communication unit 514 comprises Bluetooth control chip 501 and read-only memory (ROM) 502, encoding and decoding speech unit 511 comprises audio codec (Codec) 505 and acoustics echo cancellation module (AEC) 506, control information processing unit 510 comprises key circuit 507 and LCD display 508, and voice-input unit 512 is a microphone 503, voice-output unit 513 is a loud speaker 504.Bluetooth control chip 501 is used for communicating with end host; There is the program that the Bluetooth control chip needs among the ROM; Audio codec 505 is finished the simulation of voice signal and the conversion between the numeral; The for example dialing of control information that key circuit 507 is used for keying in, off-hook, on-hook, password input etc. input to the Bluetooth control chip, and by this chip control information are sent to end host; The information that LCD display circuit 508 shows from end host.The also configurable earphone jack of this handheld unit.
The communication process of handheld unit is such: the local voice signal is sent into audio codec 505 by microphone 503, after process audio codec 505 is converted to digital signal, sends to end host by Bluetooth control chip 501; After receiving by Bluetooth control chip 501 from the remote digital voice signal of end host, be converted to analog signal through audio codec 505 and be sent to loud speaker.This communication process can be a fdd mode, also can be tdd mode.
Referring to shown in Figure 6, Fig. 6 is the end host schematic diagram.End host comprises end host radio communication unit 612, compression coding and decoding unit 614 and Audio Processing Unit 613, wherein, compression coding and decoding unit 614 comprises digital signal processor (DSP) 605, Video Decoder 607, video encoder 606, be used for stored program read-only memory 604 and be used for data cached random asccess memory 603, Audio Processing Unit 613 comprises audio digital to analog converter (DAC) 608, audio frequency analog to digital converter (ADC) 609, acoustic echo canceler module 611 and microphone 610, end host radio communication unit 612 comprises Bluetooth control chip 601, and other has power module 602 to provide power supply for all circuit of end host.Be used for stored program read-only memory 604, be used for data cached random asccess memory 603 and be connected with digital signal processor 605 respectively, the Bluetooth control chip 601 of end host both had been responsible for and the communicating by letter of handheld unit, also be responsible for and the communicating by letter of cradle, and be connected with digital signal processor 605.
When using the handheld unit conversation, the acoustic echo canceler module 611 of end host, audio digital to analog converter 608, audio frequency analog to digital converter 609 are not worked, far-end speech data and far-end view data that the Bluetooth control chip 601 of end host receives from cradle, after exporting digital signal processor 605 to and decompressing, Bluetooth control chip 601 by end host sends to handheld unit with the far-end speech data that decompress again, and the far-end view data that decompresses is exported to the video inputs of television set; Simultaneously, the local voice data that the Bluetooth control chip 601 of end host receives from handheld unit, and after exporting digital signal processor 605 to and compressing, Bluetooth control chip 601 by end host exports cradle to, after exporting video encoder encodes to from the local image signal of video camera, export digital signal processor 605 to and compress, export cradle to by Bluetooth chip 601.
When not using handheld unit, when using the hand-free function conversation, far-end speech data and far-end view data that digital signal processor 605 receives from cradle by Bluetooth control chip 601, and decompress, wherein, after the far-end speech data are carried out the echo cancelltion processing through acoustic echo canceler module 611, be converted to the audio input end that voice analog signal exports television set to by audio digital to analog converter 608, the far-end view data converts video analog signal to through after the video decoder decodes, gives the video inputs of television set; On the other hand, the local voice signal converts voice digital signal by the built-in microphone 610 of end host to through audio frequency analog to digital converter 609, and after carrying out echo processing, acoustic echo canceler module 611 exports digital signal processor 605 to, local image signal processing procedure local image signal processing procedure when using the cell-phone communication is identical, promptly the local image signal from video camera converts image digital signal to through video encoder, digital signal processor 605 compresses processing with above-mentioned voice digital signal and image digital signal, give cradle by Bluetooth control chip 601 then, send to far-end by cradle again.
Referring to shown in Figure 7, Fig. 7 is for realizing the PIP functional schematic.Exporting television set to after distal view picture behind local image and the decompress(ion) makes up by the picture composition module shows.Little picture can be local picture, also can be the far-end picture, and little picture can be placed on arbitrary angle of display screen.
Referring to shown in Figure 8, Fig. 8 provides multimedia IVR the schematic diagram of function for end host.When the user dials this business service of multimedia IVR service number application, end host sends to cradle with this application control information, cradle is connected local side multimedia ivr server by Modem, end host receives the data message from the multimedia ivr server, information extraction modules is extracted picture and text informations (data) and information of voice prompt (impulse coding modulation code stream), then the picture and text information is converted to vision signal, information of voice prompt is converted to audio signal, deliver to the video inputs and the audio input end of television set respectively, when providing voice suggestion, on television screen or lcd screen, provide text prompt information to be implemented in.
Shown in Fig. 9,10,11, Fig. 9 shows schematic diagram for calling telephone number, and it realizes that principle is similar to caller identification.End host receives the data message from broadband network, and extracts the calling telephone number data by information extraction modules, is converted to vision signal and exports the television set demonstration to.Figure 10 shows schematic diagram for the IP address, and end host receives from the data flow of broadband network and by information extraction modules and extracts the local ip address data, is converted to vision signal and exports the television set demonstration to.Figure 11 is for supporting the schematic diagram of IP address dialing, when the user keys in the IP address, for example, be considered to the dialing of IP address if the user dials " 1～3 bit digital "+" * "+" 1～3 bit digital "+" * "+" 1～3 bit digital "+" * "+" 1～3 bit digital "+" * ", end host is set up IP by dialling IP address automatically and is connected.
In addition, end host also is provided with interlock control interface (not shown), this interlock control interface is connected with the interlock control interface of television set, realize the interlock control with television set: television set automatically switches to the predetermined picture communication pattern during off-hook, the picture-in-picture of the AV terminal of appointment or designated mode for example, television set automatically restores to the on-hook premode during on-hook, and for example shutdown or RF receive or other AV terminal.
The video input interface of end host can be USB interface, and this USB interface is used to connect USB video camera or USB mouse or USB keyboard.
Referring to shown in Figure 12, Figure 12 is the cradle schematic diagram.This cradle comprises bridge module 129, cradle radio communication unit 128, network interface at least and is used to the power module 120 of handheld unit charging, wherein, bridge module 129 is served as Ethernet to the bridge between the bluetooth microcellulor, comprise CPU122, ethernet controller 121, be used to store the required program of CPU read-only memory 124, be used to store the read-only memory at random 125 and the telephone interface circuit 126 of data, cradle radio communication unit 128 comprises Bluetooth control chip 123, is used to store the read-only memory 127 of the required program of Bluetooth control chip.Described read-only memory 124, read-only memory 125 is connected with CPU122 respectively at random, described read-only memory 127 is connected with Bluetooth control chip 123, described ethernet controller 121 connects broadband network by Ethernet interface, and described power module 120 can be realized function to the handheld unit charging by charging port.
Described ethernet controller 121 will export CPU to by the far-end view data of coming automatic network, the far-end speech data that Ethernet interface transmitted, CPU is converted to the Bluetooth protocol data with said distal ends view data, far-end speech data, export the Bluetooth control chip then to, send to end host by Bluetooth chip
Described Bluetooth control chip 123 exports the local view data from end host, the local voice data that received to CPU, after CPU is converted to the Ethernet protocol data with above-mentioned local view data, local voice data, export ethernet controller to, ethernet controller exports far-end to by Ethernet interface.
Telephone interface circuit 126 provides the analog station interface for common phone, and this telephone interface circuit and CPU join, and can finish the conversion of IP phone and analog telephone when using plain old telephone, and can realize the function of pseudo-telephone number calling.
The function that above-mentioned pseudo-telephone number is called out is achieved in that the local caller use PSTN of elder generation number call connects, telephone interface circuit exports this request to CPU, CPU calls pseudo-telephone number calling module, use Dual Tone Multifrequency agreement exchange IP address, far-end is called to be switched by the IP conversion keys, then, after connecting by the IP address, automatically removing PSTN connects, adopt technology such as Voice over IP and Video over IP to carry out voice communication or video communication afterwards, to reduce communication cost greatly.Voice over IP and Video over IP adopt H.323 agreement or conversation startup agreement (Session Initiation Protocol).
In the present embodiment, picture monitor can also be a cathode ray tube (CRT), perhaps thin-film transistor (TFT) display, perhaps LCD display.Cradle can be made an equipment with end host.The above only is preferred embodiment of the present invention; not in order to restriction the present invention; within the spirit and principles in the present invention all; any modification of being done, be equal to replacement, improvement etc.; all should be included within the spirit and principle of invention; any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1, a kind of Broadband TV phone, comprise the picture monitor that is used to absorb the camera of local image and shows the distal view picture, it is characterized in that this Broadband TV phone at least also comprises: end host, handheld unit and the cradle that links to each other with external communication network, wherein
The control that described end host is used for the processed voice view data and communicates, link to each other respectively with picture monitor with described camera, when the remote data that receives from external communication network, reception is from the far-end compressed image speech data of described cradle with local voice data and the communication control information of wireless mode reception from described handheld unit, and the far-end compressed image voice data decompression that receives contracted, with the local voice data that receive, and compress processing from the local view data of camera, when external communication network sends local data, local image speech data after processing is compressed in described cradle transmission, with the far-end speech data of wireless connections mode after described handheld unit sends described communication control information and carries out decompression, and the far-end view data after decompression is carried out in picture monitor output;
Described handheld unit is used for conversation, when the remote data that receives from external communication network, receive described communication control information and from the far-end speech data of described end host with wireless mode, and these far-end speech data are converted to voice signal, when external communication network sends local data, send described communication control information with wireless mode to described end host, and after the dialect tone signal of will gather is converted to described local voice data, send to described end host;
Described cradle is used for translation-protocol and is the handheld unit charging, when external communication network sends local data, reception is from the local image speech data of described end host and carry out corresponding protocol conversion back and deliver to far-end by network, when the remote data that receives from external communication network, the distal view of automatic network carries out being sent to described end host after the corresponding protocol conversion as speech data in the future.
2, Broadband TV phone according to claim 1 is characterized in that:
Described end host comprises the end host radio communication unit at least, video input interface, video output interface and compression coding and decoding unit, wherein, when the remote data that receives from external communication network, described end host radio communication unit receives from the far-end speech data of cradle and far-end view data and from the local voice data of handheld unit and control above-mentioned data and export described compression coding and decoding unit to, and from the local voice data of handheld unit and control above-mentioned data and export described compression coding and decoding unit to, this compression coding and decoding unit exports picture monitor to by described video output interface after with described far-end image data decoding, to be sent to described handheld unit by described end host radio communication unit after the described far-end speech data decode, described local voice data are compressed the back be sent to described cradle by described end host radio communication unit, when external communication network sends local data, after inputing to described compression coding and decoding unit, after encoding to it, described compression coding and decoding unit just is sent to described cradle from the local view data of camera by described end host radio communication unit by described video input interface;
Described handheld unit comprises the hand wireless communication unit at least, the encoding and decoding speech unit, the control information processing unit, voice-input unit and voice-output unit, wherein, when external communication network sends local data, described voice-input unit receives described local voice data and it is inputed to described encoding and decoding speech unit, described encoding and decoding speech unit is used for above-mentioned local voice data are encoded and it is inputed to described hand wireless communication unit, when the remote data that receives from external communication network, described hand wireless communication unit receives and to export described encoding and decoding speech unit to from the far-end speech data of described end host radio communication unit and with it, and described encoding and decoding speech unit is used for the said distal ends speech data is decoded and exported it to described voice-output unit; Described control information processing unit is connected with described hand wireless communication unit, and the control information of importing is inputed to the hand wireless communication unit;
The battery that described cradle is included as handheld unit at least provides the power module of charge power supply, network interface, the bridge module and the cradle radio communication unit that are used for translation-protocol, wherein, when external communication network sends local data, described cradle radio communication unit receives from the local voice data of described end host radio communication unit and local view data and with it and exports described bridge module to, described bridge module is used for the local voice data and the local view data that receive are carried out protocol conversion and exported it to far-end by described network interface, when the remote data that receives from external communication network, come automatic network far-end speech data and far-end view data to input to described bridge module by described network interface, this bridge module inputs to described cradle radio communication unit with it after the far-end speech data that receive and far-end view data are carried out protocol conversion;
Described end host radio communication unit links to each other by wave point with described hand wireless communication unit, also links to each other by wave point with described cradle radio communication unit.
3, Broadband TV phone according to claim 2 is characterized in that, the frequency range that described end host radio communication unit, hand wireless communication unit and cradle radio communication unit adopt is all the analog cordless telephone frequency range.
4, Broadband TV phone according to claim 2 is characterized in that, described end host radio communication unit, hand wireless communication unit and cradle radio communication unit are respectively the Bluetooth control chip.
5, Broadband TV phone according to claim 2 is characterized in that, described network interface is the lan interfaces that meets IEEE802.3, for meeting the wireless lan interfaces of IEEE802.11b, perhaps is bluetooth micro-cellular network interface perhaps.
6, Broadband TV phone according to claim 1 and 2 is characterized in that, described picture monitor is a cathode-ray tube display, perhaps is TFT thin film transistor monitor, perhaps is LCD.
7, Broadband TV phone according to claim 2 is characterized in that, described video input interface can be for being used to connect the usb host interface of USB camera or USB mouse or USB keyboard.
8, Broadband TV phone according to claim 1 and 2, it is characterized in that, described picture monitor further comprises an interlock control interface, described end host further comprises the interlock control interface that is used for the picture monitor mode switch, and this interface links to each other with the interlock control interface of described picture monitor.
9, Broadband TV phone according to claim 2, it is characterized in that, described compression coding and decoding unit comprises video encoder, Video Decoder at least, is used for the digital signal processing chip of data compression and decompression processing, is used for stored program read-only memory and is used for data cached random asccess memory, wherein
Described read-only memory, described random asccess memory link to each other with described digital signal processing chip respectively;
When external communication network sends local data, described local view data from camera is after inputing to described video encoder, this video encoder is encoded to described local view data and is exported it to described digital signal processing chip, this digital signal processing chip compresses the data that receive and it is inputed to described end host radio communication unit, when the distal ends data that receive from external communication network, described digital signal processing chip receives from the data in the described end host radio communication unit, and exporting the distal view in the data to described Video Decoder after as data decompression, this Video Decoder is decoded to the data that receive and is exported it to described picture monitor.
10, Broadband TV phone according to claim 9 is characterized in that, described digital signal processing chip also comprises picture composition module, the information extraction modules that realizes picture-in-picture function, wherein,
Described picture composition module with local view data and the distal view after decompressing export the video inputs of described picture monitor after as data combination to;
Described information extraction modules is the picture and text information in the automatic network data flow and the video inputs and the audio input end that export described picture monitor after information of voice prompt is separated respectively in the future, perhaps information extraction modules is extracted and is exported the video inputs of described picture monitor to from the calling telephone number data in the network data flow and with it, and perhaps information extraction modules is extracted and exported the video inputs of described picture monitor to from the local ip address data in the network data flow and with it.
11, Broadband TV phone according to claim 2, it is characterized in that, described end host comprises that further one carries out the Audio Processing Unit of voice digital-to-analogue conversion under the hand-free call state, this Audio Processing Unit comprises the audio frequency analog to digital converter, audio digital to analog converter, the acoustic echo canceler module, microphone, wherein, when external communication network sends local data, described microphone inputs to described audio frequency analog to digital converter with the local voice signal, carry out inputing to described acoustic echo canceler module after the analog-to-digital conversion, described acoustic echo canceler module carries out inputing to described compression coding and decoding unit after echo cancelltion is handled, when the remote data that receives from external communication network, described acoustic echo canceler module receives the far-end speech data from described compression coding and decoding unit, it is being carried out export it to described audio digital to analog converter after echo cancelltion is handled, this audio digital to analog converter carries out exporting to after the digital-to-analogue conversion audio input end of described image display.
12, Broadband TV phone according to claim 2, it is characterized in that, described encoding and decoding speech unit comprises audio codec, the acoustic echo canceler processing module that is used for the speech data encoding and decoding at least, described voice-input unit comprises a microphone at least, described voice-output unit comprises a loud speaker at least, wherein
When external communication network sends local data, the local voice data that described microphone receives input to described audio codec, after encoding, this audio codec exports described acoustic echo canceler processing module to, this acoustic echo canceler processing module carries out exporting described hand wireless communication unit to after echo cancelltion is handled, when the remote data that receives from external communication network, described acoustic echo canceler processing module also receives the far-end speech data from the hand wireless communication unit, this acoustic echo canceler processing module exports described loud speaker it being carried out export it to described audio codec after echo cancelltion is handled to after this audio codec is decoded again.
13, Broadband TV phone according to claim 2, it is characterized in that, described control information processing unit comprises at least and is used to the display circuit keying in the key circuit of control command and be used for the display terminal host information that described key circuit links to each other with described hand wireless communication unit respectively with display circuit.
14, Broadband TV phone according to claim 2, it is characterized in that, described bridge module comprises the central processing unit that is used for protocol conversion at least, realize analog telephone and IP phone change and provide the telephone interface circuit of simulative telephone interface, be used to store the required program of central controller read-only memory, be used to store the read-only memory at random and the network controller of data, wherein
Be used to store the read-only memory of the required program of central controller, the read-only memory at random that is used to store data links to each other with central processing unit respectively, described telephone interface circuit is connected with central processing unit, and the simulative telephone interface of this telephone interface circuit links to each other with plain old telephone;
When the remote data that receives from external communication network, described network controller will export central processing unit to from the far-end view data and the far-end speech data of described network interface, after central processing unit is converted to protocol data corresponding to the cradle radio communication unit with said distal ends view data and far-end speech data, export described cradle radio communication unit to, when external communication network sends local data, described central processing unit also receives from the local view data of described cradle radio communication unit and local voice data, after this central processing unit is converted to protocol data corresponding to network with above-mentioned local view data and local voice data, export described network controller to, this network controller exports the data that receive to far-end by described network interface.
15, Broadband TV phone according to claim 14, it is characterized in that, described central processing unit also comprises use dual-tone multifrequency agreement exchange IP address and adopts the H.323 agreement or the pseudo-telephone number calling module of startup agreement communication of conversing that described telephone interface circuit exports the public telephone network setup requests to described pseudo-telephone number calling module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146210 CN1266938C (en) | 2002-10-16 | 2002-10-16 | Broadband TV telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02146210 CN1266938C (en) | 2002-10-16 | 2002-10-16 | Broadband TV telephone |
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| Publication Number | Publication Date |
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| CN1491039A CN1491039A (en) | 2004-04-21 |
| CN1266938C true CN1266938C (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02146210 Expired - Fee Related CN1266938C (en) | 2002-10-16 | 2002-10-16 | Broadband TV telephone |
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| CN (1) | CN1266938C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8225458B1 (en) | 2001-07-13 | 2012-07-24 | Hoffberg Steven M | Intelligent door restraint |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870743B (en) * | 2005-05-26 | 2011-12-07 | 中国电信股份有限公司 | Visual telephone device controlled and displayed by wireless telephone and TV. |
| CN100362864C (en) * | 2005-07-13 | 2008-01-16 | 浙江大学 | Visual telephone system of network based on single-chip |
| KR101434616B1 (en) | 2007-04-04 | 2014-08-27 | 삼성전자주식회사 | Communication method and network display apparatus using the same |
| US8253772B2 (en) | 2008-04-04 | 2012-08-28 | Centurylink Intellectual Property Llc | Method, apparatus and system for incorporating voice or video communication into a television or compatible audio capable visual display |
| CN101841775A (en) * | 2009-03-20 | 2010-09-22 | 中兴通讯股份有限公司 | System and method for implementing multi-party session |
| CN101867664A (en) * | 2009-04-17 | 2010-10-20 | 中兴通讯股份有限公司 | Method and system for implementing communication service |
| CN101571989A (en) * | 2009-06-11 | 2009-11-04 | 何旸 | Control system, control terminal and control method for general electric appliance |
| CN101819621A (en) * | 2010-04-14 | 2010-09-01 | 大连佳世电子有限公司 | Intelligent bar code scanning system with surface mounting technology |
| CN102385792B (en) | 2010-08-30 | 2014-11-05 | 联想(北京)有限公司 | Electronic equipment and operation method thereof |
| CN102572365B (en) * | 2010-12-22 | 2015-05-27 | 深圳市同洲软件有限公司 | Video call switching method, mobile terminal and system |
| CN102779108A (en) * | 2011-05-12 | 2012-11-14 | 上海联影医疗科技有限公司 | Spectrometer external device connection module |
| CN103124340A (en) * | 2011-11-18 | 2013-05-29 | 北京旋极信息技术股份有限公司 | Signal relay method |
| CN103634553A (en) * | 2012-08-21 | 2014-03-12 | 汉峰世纪科技(北京)有限公司 | A telephone television wireless interconnection system |
-
2002
- 2002-10-16 CN CN 02146210 patent/CN1266938C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8225458B1 (en) | 2001-07-13 | 2012-07-24 | Hoffberg Steven M | Intelligent door restraint |
| US9045927B1 (en) | 2001-07-13 | 2015-06-02 | Steven M. Hoffberg | Intelligent door restraint |
| US9121217B1 (en) | 2001-07-13 | 2015-09-01 | Steven M. Hoffberg | Intelligent door restraint |
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| Publication number | Publication date |
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| CN1491039A (en) | 2004-04-21 |
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