KR100944208B1 - Dataconferencing method, appliance, and system - Google Patents

Dataconferencing method, appliance, and system Download PDF

Info

Publication number
KR100944208B1
KR100944208B1 KR1020047005682A KR20047005682A KR100944208B1 KR 100944208 B1 KR100944208 B1 KR 100944208B1 KR 1020047005682 A KR1020047005682 A KR 1020047005682A KR 20047005682 A KR20047005682 A KR 20047005682A KR 100944208 B1 KR100944208 B1 KR 100944208B1
Authority
KR
South Korea
Prior art keywords
network
dataconferencing
data
remote
image
Prior art date
Application number
KR1020047005682A
Other languages
Korean (ko)
Other versions
KR20040068123A (en
Inventor
글릭맨제프
이. 슬로보딘데이비드
포스톤레니
Original Assignee
세이코 엡슨 가부시키가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US33025301P priority Critical
Priority to US60/330,253 priority
Priority to US10/043,770 priority patent/US20030072298A1/en
Priority to US10/043,626 priority patent/US7237004B2/en
Priority to US10/043,626 priority
Priority to US10/043,770 priority
Application filed by 세이코 엡슨 가부시키가이샤 filed Critical 세이코 엡슨 가부시키가이샤
Priority to PCT/US2002/030848 priority patent/WO2003034235A1/en
Publication of KR20040068123A publication Critical patent/KR20040068123A/en
Application granted granted Critical
Publication of KR100944208B1 publication Critical patent/KR100944208B1/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements or protocols for real-time communications
    • H04L65/40Services or applications
    • H04L65/403Arrangements for multiparty communication, e.g. conference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1813Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
    • H04L12/1818Conference organisation arrangements, e.g. handling schedules, setting up parameters needed by nodes to attend a conference, booking network resources, notifying involved parties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L29/00Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/00 - H04L27/00
    • H04L29/02Communication control; Communication processing
    • H04L29/06Communication control; Communication processing characterised by a protocol
    • H04L29/0602Protocols characterised by their application
    • H04L29/06027Protocols for multimedia communication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/42Systems providing special services or facilities to subscribers
    • H04M3/56Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567Multimedia conference systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1225Details of core network interconnection arrangements
    • H04M7/1235Details of core network interconnection arrangements where one of the core networks is a wireless network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/128Details of addressing, directories or routing tables
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/129Details of providing call progress tones or announcements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M7/00Interconnection arrangements between switching centres
    • H04M7/12Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements
    • H04M7/1205Interconnection arrangements between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step, decimal and non-decimal, circuit-switched and packet-switched, i.e. gateway arrangements where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
    • H04M7/1295Details of dual tone multiple frequency signalling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2201/00Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38Displays

Abstract

Geographically distributed conference sites each have a telephone receiver and dataconferencing devices 112 and 122 connected to a shared voice calling network 146. Each site has a display device 124 for displaying images composed of image data generated by the image source. The data conference devices 112 and 122 are connected to a data network 132 that links sites independently of the voice calling network 146. To initiate a data conference session between sites, a voice call session is first established between telephone receivers via voice call network 146. The access negotiation process executed in the software or hardware of the data conference device 112, 122 is started manually to communicate to at least second ones of the sites in the voice call session and identify the network device access code. The network device access code is used to establish a data communication session over the data network 132 for normal transmission of image data between sites.
Figure R1020047005682
Telephone adapters, access codes, workstations, firewalls

Description

Dataconferencing method, appliance, and system

The present invention provides improved methods, devices, and methods for establishing dataconferencing sessions between two or more geographically remote conference sites using multimedia teleconferencing methods and devices, particularly distributed control. And systems.

Setting up combined audio and visual presentations between remote conference sites is currently time consuming, difficult and expensive. As one known method. There is videoconferencing comprising two or more videoconferencing devices sold by Picturetel Corporation of Andover, Massachusetts. The devices are optimized and expensive to support full motion person to person video. They use expensive ISDN lines for communication that add to the total solution cost and hinder the mobility of the system. Videoconferencing devices also have dedicated phone numbers that can be unlisted or difficult to determine, complicating videoconference setup. In many examples, full motion video is unnecessary for an effective conference. Often simple telephone conferences and shared presentation images are all that is required.

The common task of presenters is to display computer generated visuals or images. Videoconferencing systems typically do not provide a convenient tablelet top connection for integrating presentation images with video transmission. Rather, it is necessary to adjust the videoconferencing system such that the video camera is directed towards the screen where the presentation images are displayed, for example, via a computer display or multimedia projector.

It is known to use both telephones and computers to share presentation material between local and remote sites on a computer network simultaneously with an audio telephony conference. In known methods, respective connections are manually established for voice calls (via the telephone network) and data or images (via the computer network). The telephone number of the remote site is first dialed on the speakerphone at the local site to form an audio connection. Then, in order to establish a shared presentation connection, the user at the local site must locate the Internet protocol address ("IP address") of the remote computer and establish a data network connection. While the original phone numbers are typically deployed or communicated to remote parties, IP addresses are often unknown, often changed, and difficult to obtain. IP addresses are dynamically assigned to computers or corporate subnets within the network domain via Dynamic Host Configuration Protocol ("DHCP") and addressable directly from the outside due to the use of proxy servers or network address transfer (NAT) services. Can only be effective within a domain or corporate subnet. Data network connections for shared presentations are typically blocked by the firewall when sending data or images over the Internet, unless the firewall is specifically configured. Thus, there is a need for improved methods and devices for establishing dataconferencing sessions.

Other dataconferencing systems use a centralized computer server to set up and manage audio and data connections. For example, U.S. Pat.No. 5,916,302 to Dun et al. Uses a public switched telephone network ("PSTN") for centralized server computers and dataconference audio components accessible through a computer network for distributing video or image components of a data conference. Describe it. Persons using systems such as Dunn use a personal computer's web browser software to access the server computer to download images. The network address or internet domain name of the server computer must be communicated to all participants and manually entered into the web browser by each participant to upload or access the image components of the data conference. Manual entry of a network address of a server is tedious, subject to geographic errors, and difficult to cooperate with multiple conference participants. This method leaves residual images on each participant's computers and the central server computer after completion of the dataconference, which may be undesirable.

Watson, US Pat. No. 6,233,605, describes a low bandwidth remote conferencing system using PSTN for network computers and audio components for visual components. Before the conference, data representing the visual images is distributed to the conference participants' computers. During the conference, one participant, the leader, periodically issues selection signals to all computers to select and display one of the distributed images. Selection signals and telephone conferences are performed by a single voice grade telephone channel. The system does not address the goal of avoiding computer manual interaction at each site to require distribution of presentation images before the telephone conference and to initiate the downloading of image data. In addition, there are some types of presentations that may not be provided in front of the presentation and include the interactive use and display of software applications such as spreadsheets or drawing programs. For example, budget planning and review sessions, design conferences, and distance learning all benefit from the ability to interact with the software program at one or more sites, and display the software program display all output of participating sites at about the same time. Due to the Dunnung method, Watson's system preferably leaves residual image data on the participant computers. Accordingly, there is a need for a dataconferencing system that allows for immediate distribution of presentation content and control of a remote presentation display on the fly without using expensive centralized data storage servers and without user interaction at each remote conference site.

Many conference facilities include network connection points such as barrier jacks for Ethernet, but most facilities do not maintain computers connected to the network. As a result, a significant amount of time is required to establish a network connection to the computer to be used at the respective conference sites. The time and difficulty of connecting to a network can be configured by the use of laptops or other mobile computers configured for use with other networks or at other locations within the same network. None of the systems described above overcomes the difficulties associated with configuring a computer for connection to a computer network between respective conferences prior to each data conference session. There is a need for a simple method of connecting a computer or other display device to a data network for use of dataconferencing.

There is a need for a dataconferencing device that includes projector connection, computer network connection, voice network connection, and dataconferencing control mechanism in a single convenient tablelet top unit.

Disclosure of Invention

In accordance with the present invention, each of two or more geographically separated conferences each has a telephone receiver and dataconferencing device coupled to a voice calling network, such as a public switching telephone network ("PSTN") or a dedicated branch exchange ("PBX"). Each site also has a display device such as a computer display screen or an electronic projector to display images composed of image data formed by the image source. To facilitate sharing of image data between sites, a network interface at each site couples the dataconferencing control unit of the dataconferencing apparatus to a data network that links the sites independently of the voice calling network.

To initiate a data conference session between sites, a voice call session is first established between telephone receivers over the voice call network. Access negotiation executed in software or hardware on the dataconference control units is manually initiated at the first of the first sites to identify the network device access code and communicate it to the second sites of at least one of the sites. The network device access code is communicated by generating an audio signal representing the network device access code and transmitting it in a voice call session. In response to receiving the audio signal at the second site, the access negotiation process of the data conference control unit at the second site uses a network interface module and the received network device access code to establish a data communication session between the sites over the data network. Combine, thus eliminating any need for dataconference participants to periodically interact to identify a network device access code or establish a data communication session. Once a data communication session is established, images are typically transferred between sites over a data network for display on display devices and the audio portion of the conference call is recovered back during a voice call using the telephone receiver at each site. do.

In a preferred embodiment, the dataconferencing apparatus, the telephone receiver and the network interface are typically arranged on a conference table at each of the respective sites and to facilitate dataconferencing according to the present invention. And integrated into a dataconferencing speakerphone device that can be coupled to the device. Manually activated input keys are provided to begin the access negotiation process.

In another embodiment, the data conference control unit may include software running on a computer workstation that can be used as a display device, telephone receiver, and / or image source; Or as a simplified dataconferencing device that can be used as a separate telephone receiver, display device and image source. Dataconferencing devices according to the present invention include network connectors and automatic network configuration routines to simplify the connection of an image source, such as a presenter's laptop computer to a data network.

Additional features and advantages of the invention will be apparent from the following detailed description of the preferred embodiments, and proceeds with reference to the accompanying drawings.

1 is a block diagram of a simplified dataconferencing system including local and remote dataconferencing devices in accordance with a preferred embodiment of the present invention.

2 is a flow chart illustrating a dataconferencing method performed by the system of FIG.

3 is a network diagram illustrating the dataconferencing system of FIG. 1 operating between a local dataconferencing site and a remote dataconferencing site.

4 is a network diagram illustrating a dataconferencing system of the second preferred embodiment including network enable projectors having integrated network interfaces for communicating over a data network.

5 is a network diagram illustrating a dataconferencing system of a third preferred embodiment including a laptop computer for use as an image source connected directly to one of the display devices.

FIG. 6 is a network diagram illustrating a dataconferencing system of a fourth preferred embodiment in which a network interface of one of the dataconferencing devices includes a modem for accessing a data network via a dial-up connection to an Internet service provider (“ISP”).

FIG. 7 is a network diagram illustrating a dataconferencing system of a fifth preferred embodiment wherein a local dataconferencing appliance includes a wireless networking facility for communicating with a local wireless enable projector and a local wireless enable image source device.

8 is a network diagram of the dataconferencing system of FIG. 7 further comprising wireless networking hardware for the local dataconferencing device to communicate with an infrastructure wireless networking access point.

9 shows a sixth preferred embodiment dataconferencing system in which two image source devices are used to share image content between sites for display on display devices in a split screen format and simultaneously generate image content. Network diagram.

10 is a network diagram illustrating a seventh preferred embodiment dataconferencing system comprising an integrated dataconferencing speakerphone device.

FIG. 11 is a network diagram illustrating an eighth preferred embodiment dataconferencing system including a combined dataconferencing speakerphone device and a projector. FIG.

12 is a network diagram showing five conference sites participating in a dataconference according to the present invention comprising one site without a display device and another site with a dataconference control unit implemented in software on a computer workstation.

FIG. 13 is an enlarged view of the integrated dataconferencing speakerphone of FIG. 10. FIG.

FIG. 14 is a diagram of the dataconferencing speakerphone device of FIG. 13 showing the stretched network and peripheral cables extending from the device for connecting to a laptop computer.

Fig. 15 is a state diagram showing the steps of an IP address exchange process of a data conference control unit operating according to an embodiment of the present invention.

16 is a block diagram of another embodiment dataconferencing system including an internet conference server for use of the present invention with a computer network firewall.

The terms used in the present application, including the terms in the Abstract, the Detailed Description of the Preferred Embodiments and the Claims Session, have the following meanings for the purpose of clearly using what is indicated by the context.

"Data network"-a network for transmitting encoded data as digital signals, including, for example, local area networks (LAN), wide area networks (WAN), and the Internet; The data network comprises one or more modem transmission path segments for transmitting data in analog form over the voice network, excluding voice communication sessions; Data networks are distinguished from voice networks designed to handle voice calls for transmitting analog signals representing audio, in particular not designed to carry digital data.

"DHCP" (Dynamic Host Configuration Protocol)-TCP / IP protocol for assigning IP addresses to hosts in a domain or corporate network and automating the transfer; DHCP servers typically include a proxy server or network address translation (NAT) server that allows hosts to be addressable within a domain that is not outside of the domain.

"Display Device"-a computer as well as an indirect display, such as electronic projector devices sold in the form of Inorganic Wilson Billy, Informatics Corporation, the assignee of the present application, regardless of where it is mounted, whether connected directly to a data network or not Any device for displaying characters or images, including direct view displays such as monitors, raster displays, and the like.

"DTMF" (Dual Tone Multi-Frequency)-includes a frequency combination of other tone pairs not available on the telephone touchpad, as well as a pair of frequency combinations of 12 distinct tones used as commonly known as "touch tone" dialing Tones in the form that are created when the phone's touchpad keys are pressed.

"Electronically generated audio signal"-tones in the audio or near audio range of frequencies, including, for example, clicks, dial tones, DTMT tones, and modem tones, which are generated by electronic circuitry and can be transmitted over a voice network without significant interest or Signals Indicating Sounds.

"Image source"-a device that creates, forms, or plays back a set or stream of data requiring one or more images or video frames; Exemplary image sources include personal computers, laptop computers, DVD playbacks and video playback devices such as VCRs (analog or digital video outputs), digital cameras (moving pictures including “webcams”), digitization scanners, And personal digital assistants (PDAs).

"Independent" voice and data networks—voice and data networks as defined herein in which parallel, exclusive voice calling and data network sessions are established; The equipment of a voice network (usually circuit switching) is often physically separated from the equipment of the data network (usually packet switching), but need not be so; However, a data network session always includes a voice call even though the data network session includes an analog or DSP modem transport path segment carried by the POTS network and even though voice calls are carried by the data network equipment using voice over IP technology. It is logically separated and separated from the session.

"Key" or "input key"-an interface device such as a pushbutton, a switch or a software button activated by a mouse click or other computer input action; Or any other input device for receiving one or more data bits used to trigger various events within the system of the present invention or to initiate the negotiation process of the present invention.

"Network device access code" or "network access code"-any form of address or code for accessing a device on a data network; Exemplary network access codes include, but are not limited to, network addresses such as domain names, uniform resource locators (URLs), IP addresses compliant with IPv4 or IPv6 (including IPv4 with Classless Information Routing (CIDR)) (static, dynamic, etc.). , Including symbol and virtual addresses), and physical addresses (eg, Ethernet addresses); And / or passcodes such as session identification codes, passwords, cookies, encryption codes or keys, digital signatures, and the like.

"POTS"-Acronym for "Obviously Old Phone System"; A suite of telephony interface and protocol standards that provide interoperability between networks of widely used voice telephony services providers; POTS networks typically include circuit switched telephone networks and equipment for use, although some packet switching networks may interface with POTS networks.

"Public Switching Telephone Network" (PSTN)-a collection of publicly available telephony resources including resources that provide local and long distance land-based, wireless and cellular telephone services.

"Telephone receiver"-without limitation POTS telephone receiver set, ISDN telephone receivers, VoIP telephones, speakerphones, headsets, wireless telephone handsets, cellular or PCS telephones, computer workstations with telephone emulation software and any All forms of devices capable of connecting to a voice network for receiving analog or digital signals indicative of audio telecommunications, including other analog or packet telephony devices.

"Voice Call" or "Voice Call Session"-any audio communication session in which the caller dials the telephone number assigned to the call receiving telephone receiver to cause an incoming call indication (typically a telephone ring) at the receiver's telephone receiver; The voice call session begins after the call recipient answers his or her telephone receiver; Voice calls are typically performed by a POTS network, but may be performed by any other communication network if the voice call session is logically separated from any digital data network sessions and is not interlinked.

"Voice network"-any network configured to handle voice calls; Although typically a POTS network, it includes packet switching networks and portions of data networks where voice over IP calls is made.

"VoIP over IP" (VoIP)-audio call in which at least one end segment of the call path traverses the data network; VoIP includes digitizing the audio signal, transmitting the digitization signal over a packet switching data network using the Internet Protocol (IP), and converting the digitized signal back to analog audio for listening at the receiving end of the audio call.

The terms used in the present application are essentially defined above but follow the meaning generally understood by those skilled in the art in the context in which they are used.

1 is a block diagram of a simplified dataconferencing system 100 operating at a local site 102 and a remote site 104 in accordance with a first preferred embodiment of the present invention. Referring to FIG. 1, local site 102 includes a local speakerphone 110 that includes a local dataconferencing device 112. Local display device 114, such as a projector, and image source 116, such as a laptop computer, are connected to local dataconferencing device 112. Remote site 104 includes a remote speakerphone 120 coupled to remote dataconferencing device 122, which in turn is coupled to remote display device 124. Local and remote dataconferencing devices 112 and 122 control respective local and remote dataconferencing coupled to data network 132 via remote network interfaces 134 and 136 of local and dataconferencing devices 112 and 122, respectively. Units 128 and 130. Local and remote network interfaces 134 and 136 are preferably local and remote in the form of diskless embedded computers loaded with software using the dataconferencing methods according to the invention as described below with reference to FIG. It is preferably integrated into the data conference control units 128 and 130. Local US remote dataconferencing devices 112 and 122 are connected via an incoming telephone line (RJ-11 jack), a handset line of a telephone receiver (RJ-22 jack), or any other means for communicating audio signals of a voice call. Local and remote telephone adapters 140 and 142, respectively, coupled to voice network 146. The load and remote telephone adapters 140 and 142 are connected to the speakerphones 110 and 120 and the PCI bus, for example, via RJ-11 jacks, RJ-22 jacks, or other telephone audio lines (not shown), respectively. Or connected to respective local and remote dataconference control units 128 and 130 through a parallel port (not shown).

The components and devices of the local speakerphone device 110, the local dataconferencing device 112, and the local display device 114 may correspond to the corresponding remote speakerphone 120, the remote dataconferencing device 122, and the remote display in both design and device. It may be able to do the same with device 124, ie system 100 is symmetric across local and remote sites 102 and 104. However, the components of system 100 need not be symmetrical or the same. For example, some methods of partitioning or integrating some or all of the components of the dataconferencing system 100 are within the scope of the present invention as further described with reference to FIGS. 3-12. In addition, the dataconferencing systems according to the present invention can be used to separate from sessions with two or more sites, as described below with reference to FIG. 12 and need not be limited to two sites.

2 is a flowchart illustrating a dataconferencing method 200 performed by the dataconferencing system 100 of FIG. 1. 1 and 2, a voice call 148 (represented by a call path through voice network 146 in FIG. 1) is established between local and remote speakerphones 110 and 120 (step 210). Voice call 148 can be used for conventional phone dialing (e.g., 7 digit, 10 digit or 11 digit dialing in North America; international dialing; 3 digit, 4 digit or 5 digit dialing within a PBX network), or VoIP calling methods. Can be set using other methods used. Respective telephone adapters 140 and 142 couple respective speakerphones 110 and 120 to voice network 146, and telephone adapters 140 are for example speakerphones 110 and 120 off hook and An audio bridge (not shown) may be included to manually monitor the telephone line to determine if the voice call 148 has been established.

In order to establish a data communication session between local and remote sites 102 and 104 over data network 132, at one or both sites 102 and 104, a user may be able to access one of the dataconferencing devices 112 and 122. Manually activate system 100 at any time during the voice call session using an input key (not shown) placed in the initial one. Preferably the input key is a pushbutton that can be manually operated by the user. A manually operated input key moves the switch in the initial dataconferencing device to start the access negotiation process (hereinafter referred to as the "negotiation process"). The input key may manually activate a second time for terminating the data communication session. The next embodiment of the negotiation process involves the start of the negotiation process at local site 102; It is understood that the negotiation process optionally begins with the remote site 104. To enable the negotiation process over voice network 146, local and remote telephone adapters 140 and 142 generate audio signals (not shown) and follow the instructions issued by the negotiation process (step 220). Circuitry that transmits in response to voice call 148. Telephone adapters 140 and 142 include circuitry for recognizing audio signals when received via voice call 148. At least some of the audio signals transmitted in accordance with the negotiation process encode the network device access code.

The network device access code (hereinafter “network access code” or “access code”) may be any form of computer network address, data network address or domain name, URL, IPv4 or IPv6 (including IPv4 with CIDR). Code or dataconferencing sessions associated with local dataconferencing device 112, such as an IP address, virtual address (multicasting group address), physical address (e.g., Ethernet address or other MAC address), session ID, or passcode It can be itself. The format for the address may be preset and generally used in the negotiation process of the data conference control units 128 and 130 and may include, for example, a 32 bit IPv4 address represented as a series of 12 decimal digits. . The audio signals used to transmit the network access code (and any other data transmitted during access negotiation) are subject to blank and burst technology, DTMF tones, notch modem signals, and interruption of the voice call without terminating the voice call session. It may include other forms of electronically generated audio signals capable of transmitting data within an active voice call session with little or no activity.

After receiving audio signals at the remote dataconferencing device 122 and further recognition of the network access code, the dataconferencing system 100 restores the audio conference portion of the dataconference via voice call 148 (step 230). At the same time as the recovery of the audio conference, the local and remote dataconferencing devices 112 and 122 are preferably connected to the data network 132 via the respective network interface modules 134 and 136 (step 240) using known Internet protocols. Establish a data network session 160 on the network. Once the data network session 160 has been established, the dataconferencing system 100 can communicate with the data network session 160 (step 250) while the audio component of the data conference is performed by the voice call 148 (step 230). Image data can be transferred between local and remote sites 102 and 104.

One preferred protocol for establishing a data network session 160 includes the use of multicasting group addressing (“multicasting”). In multicasting, the network access code includes a single multicasting group address selected from the range of multicasting group addresses received in IPv4 or IPv6 standards. Any device on the data network joins the multicasting group and receives the transmission sent to the selected multicasting group address. Multicasting is a group transfer model that limits data transfer only to the portion of the data network in which group members are deployed. The use of DHCP has the advantage of avoiding the problems associated with addressing hidden dataconferencing devices in corporate networks or beyond domain proxies and is useful for communication between two or more sites. Multicasting facilitates the transfer of images from any data conference site to all other participating sites and reduces network traffic when transferring data to multiple data conference participants.

The multicast group address section may include the use of a multicast address dynamic client protocol service (“MADCAP”) accessible through the data network. Optionally, the multicast group address can be arbitrarily selected by the initial dataconferencing device, for example, by identifying an ideal multicast group address using test and error techniques. Other procedures may be possible for the multicast group address section. Since all dataconferencing devices that join the multicast group are accessible at the same network address (i.e., multicast group address), the address negotiation process necessitates via voice call 148 to distribute network addresses to participating sites. It includes only a single transmission of the multicast group address commonly used from the initial dataconferencing device. After receipt of the multicast group address, all participating sites join the multicast group to form a data connection over the data network. The access negotiation process of the local and remote dataconferencing devices 112 and 122 may also be performed by the data network 132 or voice network (e.g., to enable encrypted data communication between the local and remote dataconferencing devices 112 and 122). 146), or it may include a security protocol comprising enciphering encryption codes via both.

In order to improve the responsiveness and efficiency of system 100, local and remote network interfaces 112 and 122 are used to compress image data prior to transmission over data network session 160 and to decompress image data after reception. It preferably includes local and remote image processing subsystems 164 and 166, respectively. Alternatively, compression of the images may be performed in software or hardware at the image source 116, and decompression is performed before delivery of substantially the same uncompressed images to the local and remote display devices 114 and 124, respectively. And remote image processing subsystems 164 and 166 only. The image processing subsystems 164 and 166 may perform image scaling to resize the images to fix the pixel resolution of the respective local and remote display devices 114 and 124 before delivery of the images.

Local image processing subsystem 164 includes a frame buffer (not shown) to receive frames of image data 188 from image source device 116 and to detect changes in the image provided by image data 188. can do. When a change is detected by the local image processing subsystem 164, the current frame of image data 188 is processed for display on the local display device 114 (step 270) and sent in each data network session 160. To be compressed. However, frame buffering and change detection are preferably performed in software on the image source device 116 to reduce the amount 188 of data transmitted between the image source 116 and the local dataconferencing device 112.

In addition to handling image data transfer within data network session 160, local and remote dataconferencing devices 112 and 122 exchange control data (not shown) to control the images displayed, and It is coupled to the local and remote display devices 114 and 124, respectively, to record and communicate any other information that can be used to facilitate the data conference.

By eliminating the need for image data to be distributed in front of a dataconferencing session to both participating dataconferencing sites or centralized servers, the present invention allows images to be distributed and "on the fly" display almost simultaneously with creation or playback at the image source. . The distribution and display of images on the fly reduces the image data storage required at the participating dataconferencing site, respectively. Dataconferencing systems in accordance with the present invention may be configured such that residual image data is not left at participating sites after the end of the dataconferencing session.

As will be readily appreciated by those skilled in the art, the functions of the speakerphone, dataconference control unit, telephone adapter, network interface, image processing subsystem, and display device may be divided and configured at each presentation site in any of a variety of ways. . In addition, the configuration and partitioning of the dataconferencing components results in voice and data networks accessible at the sites and other connection layouts within each dataconference site. 3-12 are network diagrams illustrating some preferred and alternative dataconferencing system configurations, and it is emphasized that the configurations shown in FIGS. 3-12 illustrate only possible system and network configurations within the scope of the present invention and are not exclusive. .

With reference to FIG. 3, the dataconferencing system 300 according to the first preferred embodiment 100 described above with reference to FIG. 1 is a local projector 308 (or other display device), a local speakerphone at a local site 302. 312, and an image source 316, all connected to a simplified local dataconferencing device 322. Local dataconferencing device 322 provides a telephone adapter (not shown) for connecting to voice network 330 and a network interface (not shown) for connecting to data network 340 independent of voice network 330. Include.

At remote site 352, remote projector 358 (or other display device) and remote speakerphone 362 are connected to remote dataconferencing device 368. The remote dataconferencing device 368 includes a telephone adapter and a network interface (not shown) for connecting the remote dataconferencing device 368 to the respective voice and data networks 330 and 340.

Local and remote dataconferencing devices 322 and 368 may be provided with respective pushbuttons 374 and 376 or other input key means to initiate a negotiation process executed in the software and / or hardware of devices 322 and 368. Include them. Local and remote dataconferencing devices 322 and 368 may be identical in all respects; However, in the embodiment 300 shown, the remote dataconferencing device 368 need not include an interface for connecting the image source to the remote site 352. In operation, a dataconferencing session is established using dataconferencing system 300 in accordance with the method described above with reference to FIG. In particular, a voice call is first established between local and remote speakerphones 312 and 362. One of the local and remote dataconferencing devices 322 and 368 is activated by pressing one of the pushbuttons 374 and 376, which initiates the negotiation process of the respective local and remote dataconferencing devices 322 and 368. To start. The negotiation process may cause a network address to be encoded as electronically generated audio signals transmitted exclusively between respective local and remote dataconferencing devices 322, 368 via voice network 330. After completion of the address transfer, the local and remote dataconferencing devices 322 and 368 use the network address resulting in a data network session over the data network 340.

4 is a network diagram illustrating a second preferred embodiment dataconferencing system 400. Referring to FIG. 4, at each local and remote site 410 and 412, local and remote projectors 402 and 406 connect to projectors 402 and 406 directly to the data network 428, respectively. Local and remote network interface modules 418 and 420. Local and remote dataconferencing devices 436 and 438 each include a dataconference control unit and a telephone adapter (not shown) coupled to voice network 444. Local and remote dataconferencing devices 436 and 438 include pushbuttons 446 and 448, respectively, either of which is negotiated through voice network 444 to form data networking in accordance with the present invention. It can be pressed manually to start it.

Local and remote speakerphones 456 and 458 are connected to local and remote dataconferencing devices 436 and 438 respectively in the same manner as the dataconferencing system 300 (FIG. 3) of the first embodiment. Similarly, image source 466 is connected to local dataconferencing device 436. However, in contrast to the configuration shown in FIG. 3, the local and remote network interfaces 418 and 420 are connected to the respective local and remote projectors (for direct connection of the projectors 402 and 406 to the data network 428). Integrated or installed at 402 and 406. To facilitate direct network connection, projectors 402 and 406 have integrated image processing subsystems. Thus, all image transfer and display functions are processed by the projectors 402 and 406 so that the local and remote dataconferencing devices 436 and 438 have an initial data conference negotiation process with the voice network 444 and any other. It is only necessary to provide control unit functions that include interaction.

5 is a network diagram illustrating a dataconferencing system 500 of a third preferred embodiment. Referring to FIG. 5, the dataconferencing system 500 may be configured at local and remote sites 502 and 552, local and remote projectors 508 and 558, local and remote speakerphones 512 and 562, and Local and remote dataconferencing devices 522 and 568, both of which are associated with the image source 580 directly to the local display device 508 rather than local dataconferencing devices such as the system 300 of FIG. It is configured and connected to voice and data networks 530 and 540 in substantially the same configuration as the dataconferencing system 300 (FIG. 3) of the first preferred embodiment except that it is. The configuration of the system 500 in this third preferred embodiment is such that the images generated by the image source 580 are not previously processed by the image processing subsystem of the local dataconferencing device 522 and the local display device 508. Is different from the first preferred embodiment system 300 displayed by In other words, the raw image data from image source 580 is used by local display device 508, which may have its own integrated image processing subsystem. Local dataconferencing device 522 receives image data from local display device 508 and compresses the image data prior to transmission over data network 540 for reception by remote dataconferencing device 568. The remote dataconferencing apparatus 568 compresses the received image before delivery of the image data to the remote display device 558 for display similar to the decompression step described above in connection with the dataconferencing system 300 of the first preferred embodiment. It includes an image processing subsystem for decommissioning.

FIG. 6 is a network diagram illustrating a dataconferencing system 600 of a fourth preferred embodiment for use at a local site 602 that does not directly access a data network through an Ethernet junction or other digital data network access point. Referring to FIG. 6, the network interface of the local dataconferencing appliance 620 includes a telephone modem 624. The modem 624 is configured to indirectly access the data network through an Internet service provider (“ISP”) 630. For convenience, the modem 624 may be configured to automatically dial in and log on to the ISP 630 to access the data network 610 when the pushbutton 655 of the local dataconferencing device 620 is pressed. have. Modem 624 is a typical voice calling model using, for example, the V.90 protocol, in which case two telephone lines are required, and the first line 660 is the second line for the modem 624. 662 is for a voice call session between local speakerphone 648 and remote speakerphone 678.

Optionally, the modem 624 may be a DSP modem (not shown), in which case the same telephone line may be used at the local site 602 as used by the local speakerphone 648. In the SDP alternative, the voice call session and data network session may share a single copper phone at the local site 602 because the DSP modems transmit data in a different frequency band than that used by the phone. In a telephone carrier central station (not shown) in voice network 640, voice call and DSP data sessions are typically separated and retransmitted through various physical media, so that voice call sessions are routed to remote speakerphone 678 via voice path. The DSP data session is routine and routine to ISP 630 at remote dataconferencing device 568 via a data path (not shown). As a result, although voice call and data network sessions share the same physical carrier medium for the root portion between local and remote sites 602, 604, voice and data networks 640, 610 remain independent.

The dataconferencing system 600 of the fourth preferred embodiment shows the distinction between voice and data networks of the type used in the present invention. Networks may share physical facilities, but voice call and data network sessions are separate and not interlinked. As a result, the voice call signals do not affect the data network session or any related data network services, and conversely, the signals transmitted in the data network session do not affect the voice call or any related voice network services. As will be readily appreciated by those skilled in the art, the convergence that occurs in modem data networking and voice telecommunications technology obscures historically distinct features, protocols, and facilities used in voice and data networks. Nevertheless, one skilled in the art will recognize that, despite the physical network facilities and communication media used for this purpose, the method of setting up a voice call via a telephone manipulator is different from that used to establish a data networking session. It is important that a telephone receiver, such as a conference room speakerphone, is an assigned telephone number that is not indexed to telephone directors or accessible through the telephone manipulator. Conversely, data network addresses (e.g., IP addresses) can be dynamically assigned without generally being indexed in a way that is meaningful to a typical data conference participant.

By eliminating the need for participants to know network access codes for a facility located at either local or remote sites, the present invention greatly simplifies the steps performed by data conference participants. The dataconference control units according to the present invention are configured to automatically transmit voice call signals using an access negotiation process to automatically obtain a network access code and to send appropriate access codes to one or more dataconference control units at geographically remote sites. It is composed.

Some embodiments of the negotiation process of the present invention include exchanging network addresses of respective network interface modules. However, other embodiments include the transmission of a multicast group address or network address or passcode of a centralized conference service deployed on the World Wide Web. Regardless of the type of access code exchanged, the present invention eliminates the need for conference participants to enter network address information into the dataconferencing system when establishing a dataconferencing session. In addition, in some embodiments only one participant takes any action to activate the system by pressing a key on the participant's dataconferencing device or other component of any system. Optionally, other embodiments require all users to press or activate a key before joining the data portion of the dataconference, which can provide improved system security.

7 includes a wireless networking facility (not shown) for local dataconferencing device 710 to communicate with similarly mounted image source 720 and similarly mounted display device 739 at local site 732. Is a network diagram illustrating a dataconferencing system 700 of the fifth preferred embodiment. At remote site 740, remote display device 744, remote dataconferencing device 748 and remote speakerphone 752 are in the same manner as the corresponding system components of second preferred embodiment system 400 (FIG. 4). And voice and data networks 760 and 762, respectively. Any of various wireless networking techniques may be used in the wireless networking facility of the local dataconferencing apparatus 710, the image source 720, and the local display device 730. For example, a facility operating in accordance with the IEEE 802.11 standard can be used. Alternative wireless network technologies for use with the present invention include home RF, infrared networking, and any other short and long range wireless networking systems and devices, including short range peer to peer wireless networking such as BLUETOOTH. Those skilled in the art will appreciate that data transfer rates supported by other wireless networking technologies may affect the performance of the system and require additional steps of image data compression and decompression for efficient wireless transmission between the components of system 700. You will recognize that you can.

8 is a network of the dataconferencing system of FIG. 7 further including wireless LAN hardware 804 for local dataconferencing device 810 to communicate with an infrastructure wireless networking access point 820 coupled to data network 830. It is a diagram. Those skilled in the art will appreciate that many other wired and wireless networking connections may be used in accordance with the present invention. The specific combination of wired and wireless networking shown in FIGS. 7 and 8 is merely illustrative and is not configured by limiting the range in which wired or wireless networking can be used for dataconferencing devices and dataconferencing system components using the present invention. can not do it. In general, any network connections shown by the solid line connection components of the dataconferencing system of FIGS. 3-12 may be replaced with a wireless link for data or audio shared signals.

The present invention facilitates the use of more than one image source to create a collaborative visual presentation component of a data conference. 9 shows a network diagram of a dataconferencing system apparatus 900 using local and remote computer workstations 902 and 904, such as image sources disposed at local and remote sites 910 and 912, respectively. . Local and remote computer workstations 902 and 904 run multi-source presentation management software to facilitate the presentation of visual images. For example, local and remote source image clients may be provided side by side in split screen displays 920 and 922. Alternatively, the images are shown as picture to picture, alternating, rotating or inclined by the user's orientation or other criteria. Local and remote dataconferencing devices 930 and 932 are configured to detect when one or more sources of image data are connected there (indirectly via data network 940) and connected to accommodate the display of multiple images. Other embodiments (not shown) of the present invention include display of one or more image sources across a data network, display of images from multiple image sources directly connected to a single dataconferencing device, and multiple dataconferencing at one site. Accept the use of the devices.

10 is a network diagram illustrating another embodiment of a dataconferencing system 1000 in accordance with the present invention. With reference to FIG. 10, the dataconferencing system 1000 includes local and remote integrated dataconferencing speakerphone devices 1010 and 10 described in more detail with reference to FIGS. 13 and 14 at each local and remote site 1002 and 1004. 1012). Integrated dataconferencing speakerphone devices 1010 and 1012 perform both the simplified dataconferencing device and the speakerphone previously described in FIGS. 3-9. In addition, integrated dataconferencing speakerphone devices 1010 and 1012 are disposed on a work surface, such as a conference table, to provide convenient tablelet top access to data and voice networks 1020 and 1030. Optionally, local and remote integrated dataconferencing speakerphone devices 1010 and 1012 can be used as wireless networking access points or hubs when equipped with wireless networking hardware.

FIG. 11 illustrates another preferred embodiment of a dataconferencing system 1100 that includes an integrated dataconferencing projector apparatus 1111 with an integrated speakerphone 1116, a telephone keypad 1118, and a projection display device 1120. Network diagram. The integrated dataconferencing projector device 1111 includes an integrated network interface module (not shown), a push button 1122 for activating an integrated dataconference control unit (not shown), and voice and data networks 1130. And connectors (not shown) for connecting to 1140. Preferably, the integration of the projection display device 1120 in the dataconferencing projector apparatus 1111 improves the portability of the dataconferencing system and simplifies setup at conference sites. However, it is desirable for many users to keep the projection type display device separate from other system components (such as the dataconferencing systems of Figures 3-10) so that the projection display device can be used by the dataconference control unit and speakerphone. It can be arranged to improve the quality of the displayed image by placing the display device on the ceiling of the conference room, which is to be placed on the conference table for easy access.

The dataconferencing system embodiments described above with respect to FIGS. 3-11 relate to the use of the system at two conference sites. In accordance with the present invention, dataconferencing systems, devices, and methods are implemented in a symmetrical or “peer to peer” manner that can be used to link to two or more remotely deployed dataconferencing sites. 12 is a network diagram illustrating a data conference system 1200 that links five conference sites in a five way data conference in accordance with the present invention. The number of dataconferencing sites that can be accommodated by the system according to the invention is limited only by the speed and capability of the system and network components. In theory, the present invention may establish a dataconferencing session between a very large number of participating dataconference sites, possibly between hundreds of thousands of sites. Those skilled in the art need to support the audio conference portion of the dataconference among a large number of participants due to the attenuation generated by the less precise conference calling device and techniques.

Referring to FIG. 12, the dataconferencing system 1200 may include first, second, third, fourth, and fifth dataconferencing sites 1201, respectively, via independent voice and data networks 1210 and 1212. 1202, 1203, 1204, and 1205. For simplicity, none of the data network connections 1220 between the dataconferencing sites 1201-1205 and the data network 1212 are indirect as described with reference to FIG. However, modem connections including indirect connections, for example segments of data network 1212, are within the scope of the present invention. Similarly none of the dataconferencing system 1200 is shown as a wireless connection. However, one of ordinary skill in the art will appreciate that wireless networking connections may be readily used at any sites 1201-1205 or may be used instead of any data network connections 1220 of the dataconferencing system 1200.

At the first dataconferencing site 1201, the conventional speakerphone 1242 and projector 1244 are connected to a first simplified dataconferencing device 1246 of the type described above with reference to FIGS. 3-9. The hardware and / or software of the dataconferencing apparatus 1246 includes a network interface module, a dataconference control unit and an image processing subsystem. The dataconferencing appliance 1246 is connected to the voice network 1210 and is separately connected to the data network 1212.

At the second dataconferencing site 1202, the network enable projector 1252 includes a network interface module 1254 for communicating with the data network 1252. The projector 1252 is connected to a dataconferencing speakerphone device 1256 having an integrated dataconference control unit and speakerphone connected to the voice network 1210.

The third dataconferencing site 1203 is not a visual component of the dataconference but includes only a speakerphone 1258 connected to the voice network 1210 for participating in the audio portion of the dataconference.

At fourth dataconferencing site 1204, computer workstation 1262 includes a display device 1264 and an image processing subsystem together with optical presentation software for use as an image source and for cooperating with a multisource presentation. A network interface module (not shown) of the computer workstation 1262 connects the computer workstation 1262 to the data network 1212. Computer workstation 1262 is connected to a simplified dataconferencing device 1268 that includes a dataconference control unit and telephone adapter (not shown) in accordance with the present invention. The dataconferencing device 1268 exchanges network access codes with the first, second, and fifth sites 1201, 1202, and 1205 via signaling to a voice call on the voice network 1210. ) Is connected. Telephone set 1270 is connected to dataconferencing device 1268 to allow a person at fourth site 1204 to participate in the audio component of the dataconference.

At the fifth dataconferencing site 1205, the dataconferencing computer workstation 1280 includes a video display monitor 1282, a microphone 1284 and a loudspeaker 1286. The dataconferencing computer workstation 1280 may include a network interface module (not shown) for connecting to the data network 1212 and a sound card, a telephone adapter, or other hardware for connecting to the voice network 1210 (not shown). It includes. Software running dataconferencing computer workstation 1280 can process incoming and outgoing telephone calls and perform all the functions of a telephone receiver, dataconference device, image source, and image processing subsystem within the scope of the present invention. In this regard, the dataconferencing computer workstation 1280 indicates that the display device of the dataconferencing computer workstation 1280 is a video display monitor 1282 while the display device of the fully integrated dataconferencing apparatus 1111 is a projector. Except for the fully integrated dataconferencing device of FIG.

The voice call session is established between the first, second, fourth and fifth sites 1201, 1202, 1204 and 1205 and the negotiation process is performed according to the dataconferencing method described above. To distribute the network access code to the five sites 1201, 1202, 12043 and 1205. Connecting only audio to the dataconferencing session is set to a third site 1203 that cannot participate in the negotiation process.

FIG. 13 is a diagram of the integrated dataconferencing speakerphone device 1010 of FIG. 10. Referring to FIG. 13, the dataconferencing speakerphone device 1010 includes a housing 1302 holding a speakerphone including a loudspeaker 1304 and a touchpad 1306 to dial the speakerphone. Voice calls are made on the voice network by dialing the telephone number of the remote site using the touchpad 1306. The speakerphone on / off button 1314 controls the on hook or off hook state of the speakerphone when starting or ending a voice call session. The dataconferencing speakerphone device 1010 includes an integrated network interface module, a dataconference control unit, and a telephone adapter (not shown) connected to the voice network via a telephone line 1310. In accordance with the method of the present invention described above with reference to FIG. 2, the dataconference control unit includes a digital processor and other circuitry or software designed to control the telephone adapter to send electronically generated audio signals within a voice call. The dataconferencing speakerphone device 1010 includes a PC-Video-IN connector 1318 for connecting a video image source device, such as a personal computer 1420 (FIG. 14); One or more USB slots 1322 for connecting peripheral devices such as keyboards, digitization tablelets, and image source devices, and input devices such as wireless keyboards and data networks through infrastructure wireless networking access points (not shown) And optionally a wireless LAN card 1328 and a wireless input device receiver (not shown) for connection respectively. DVI or USB 1334 connects the dataconferencing speakerphone device 1010 to a projector or other display device (not shown). An optional network cable 1338 connects the network interface of the dataconferencing speakerphone device 1010 to an external data network. One or more RJ-45 connectors 1342 may be used to connect an image source or other network enable devices to a data network. The power cable 1346 is connected to a 110 volt AC power supply or wall socket to power the dataconferencing speakerphone device 1010. Finally, pushbutton 1350 is provided to activate the dataconference control unit to perform the access negotiation process and voice call signaling method in accordance with the present invention.

An additional benefit provided by the dataconferencing speakerphone device 1010 is convenient tabletop connectivity for display devices and voice and data networks made by integrating various connectors and cables into a single unit. Thus, the dataconferencing speakerphone device 1010 is used as a conventional means of connecting the presenter's computer (or other image source) to the display device and / or datanetwork even though no dataconferencing functions are used.

14 is a diagram of the dataconferencing speakerphone device 1010 of FIG. 13 showing details of the device 1010. Referring to FIG. 14, RJ-45 connectors 1342 and PC video IN connector 1318 may be provided from the dataconferencing speakerphone device 1010 when it is necessary to connect to the computer 1420 or other network enabling device or image source. Attached to cables 1410, 1412 that contract within the housing 1302 when extended and not in use.

15 is a state diagram illustrating exemplary steps of an address exchange process 1500 of a dataconferencing apparatus operating in accordance with the present invention. Referring to Fig. 15, when the ring signal 1504 is received through the voice network, the dataconferencing apparatus emulates the ringing 2, causing a ring to the attached telephone receiver. Once the voice call session is established (3), the pushbutton or other input key of the dataconferencing device is manually activated to send a "0" DTMF tone and induce the dataconferencing device to listen for a response 1516 ( 1510). Otherwise, the dataconferencing device listens for " 0 " DTMF tones 1522. Assuming a "0" DTMF tone is sent by the local dataconferencing device, the root dataconferencing device responds with 12 DTMF tones representing the IPv4 decimal address 1530 and mutes the attached telephone receiver. After reception of these 12 DTMF tones, the local dataconferencing device completes the enlightenment process by responding to the remote dataconferencing unit with the 12 digit IPv4 decimal address of the local dataconferencing device represented by the 12 DTMF tones 1534. Once the network addresses are exchanged, the LED dataconferencing device will indicate that a data network session has been established.

At any time after being established, the data network session may be terminated by activating the input key at a second time to begin the disassembly process including the transmission of the disassembly signal 1550 over the data network or within the voice call. Once disassembly is complete, the LED is turned off 1560 and the dataconferencing device is reset to the ready site 1580. As will be appreciated by those skilled in the art, the negotiation process 1500 involves transmission rather than both IP addresses when using multicast addressing as described above with reference to FIG. 2, for example. In addition, instead of using DTMF tones as described above with reference to FIG. 15, another address exchange procedure (not shown) may use other forms of electronically generated audio signals. Error checking and error correction may be included in the negotiation process 1500.

16 is a block diagram of another embodiment of a dataconferencing system 1600 that deploys the invention across a computer network firewall. Referring to FIG. 16, dataconferencing system 1600 is configured for communication between local site 1602 and remote site 1604. The local site 1602 includes a firewall 1610 installed at the local site 1602 between the local data conferencing device 1616 and the data network 1620 that is external to the local site 1602. Firewall 1610 acts as a gateway to prevent any unauthorized network traffic from entering the LAN at local site 1602 using conventional methods. Remote dataconferencing device 1626 is located at remote site 1604 and is configured the same as or different from local dataconferencing device 1616. This implementation can be used to establish a dataconferencing session between two or more sites.

To facilitate communication across the firewall 1610, an Internet conference server (“ICS”) 1630 is made accessible to the local and remote dataconferencing devices 1616 and 1626 via the data network 1620 and the data. Coupled to network 1620. ICS 1630 uses as a repository for instructions and data to be transmitted over data network 1620 between local and remote sites 1602 and 1604. In order to ensure reception of data and / or instructions transmitted via the ICS 1630, the dataconferencing devices 1616 and 1626 may use the ICS (data, images, or commands) for picking up by other dataconferencing devices. While waiting at 1630, electronically generated audio signals (not shown) may be transmitted via voice network 1640. Optionally, the dataconferencing devices 1616 and 1626 may poll the ICS 1630 periodically to determine if new data or instructions are available in the ICS 1630. By allowing the receiving site to dynamically find information temporarily stored in the ICS 1630, the dataconferencing system 1600 of FIG. 16 avoids the problem of sending commands behind the data or firewall 1610 without requiring the use of multicast addressing. Avoid.

Prior to activation, the network address of the ICS 1630 is stored in a memory on the local dataconferencing device 1616. (In fact, the network address of the ICS 1630 is preferably stored on all dataconferencing devices at the time of manufacture). To initiate a dataconferencing session, at local site 1602 a participant establishes a voice call between local and remote speakerphones 1652 and 1654 and sends a request to ICS 1630 over data network 1620. Manually activate the local dataconferencing device 1616 to do this. In response to a request from the local dataconferencing device 1616, the ICS 1630 initiates a dataconferencing session process, places memory, allocates a dataconferencing session (ID), session ID (or passcode) or secure communication. The local dataconferencing device 1616 with an encryption key. Since the local dataconferencing device 1616 requires a response from the ICS 1630, the firewall 1610 will allow the response to pass to the local dataconferencing device 1616. After receiving the response from the ICS 1630, the local dataconferencing device 1616 may determine that the audio signals indicative of the session ID (passcode) are received by the remote dataconferencing device 1626 for the voice network 1640. To be transmitted via. Using the passcode, the remote dataconferencing device 1626 establishes secure communication with the ICS 1630 and then mails to enlighten data and / or instructions between the local and remote dataconferencing devices 1616 and 1626. Use as a box. Unlike ICS related functions, the dataconferencing system 1600 operates in the same manner using the dataconferencing system 100 of FIG. 1 and the method 200 described above with reference to FIG.

It will be apparent to those skilled in the art that many changes are made in the context of the above-described embodiments of the invention without departing from the principles of the invention. Therefore, the scope of the present invention should be determined only by the following claims.

Claims (68)

  1. delete
  2. delete
  3. delete
  4. delete
  5. delete
  6. delete
  7. delete
  8. delete
  9. delete
  10. delete
  11. delete
  12. delete
  13. delete
  14. delete
  15. delete
  16. delete
  17. delete
  18. delete
  19. delete
  20. delete
  21. A dataconferencing device for use with a local site to facilitate a dataconferencing session between a local site and at least one geographically remote site, wherein the local and remote sites share a shared voice call network and share. Accessible via an established data network, the remote site having a remote dataconferencing device connected to the voice calling network and the data network, wherein at least one of the local and remote sites is for generating image data representing an image. The dataconferencing appliance having an image source, wherein the local site has a local display device that displays the image at the local site.
    A telephone adapter connecting the telephone receiver to the voice calling network such that a voice calling session can be established between the telephone receiver and the remote site via the voice calling network, the telephone adapter monitoring the voice calling session and The telephone adapter including circuitry for transmitting signals within a calling session;
    A network interface connecting the data conferencing device to the data network;
    A data conference control unit connected to the telephone adapter and the network interface, the data conference control unit configured to communicate with the local display device, the data conference control unit obtaining a network access code and the telephone adapter receiving the remote data Implement a negotiation process to generate and transmit a signal indicative of the network access code within the voice call session for reception by a conferencing device, wherein the dataconference control unit is transmitted from the remote dataconferencing device within the voice call session. In response to receiving a remote signal at the telephone adapter, the remote signal representing a remote network access code, and when the remote signal is received, the data using the remote network access code. Establishing a data communication session in parallel with the voice call session between the local and remote sites via a network such that image data is displayed via the data network to the local and remote sites for display via the local and remote displays. The dataconference control unit, enabling to be transmitted between them; And
    And a housing configured to include the telephone adapter, the network interface, and the dataconferencing control unit in an integrated dataconferencing device.
  22. 22. The dataconferencing appliance of claim 21, further comprising a telephone receiver for establishing the voice call session between the local and remote sites.
  23. 22. The dataconferencing appliance of claim 21, wherein transmitting the signals in the voice call session comprises transmitting an electronically generated audio signal indicative of the network access code.
  24. 24. The dataconferencing appliance of claim 23, wherein the electronically generated audio signal comprises a series of DTMF tones.
  25. 22. The dataconferencing appliance of claim 21, further comprising an input key that, when manually activated, initiates the negotiation process to transmit the network access code within the voice call session.
  26. 27. The dataconferencing appliance of claim 25, wherein the input key must be manually activated to establish the data communication session.
  27. 27. The dataconferencing appliance of claim 25, wherein the input key comprises a pushbutton.
  28. 22. The dataconferencing appliance of claim 21, further comprising a speakerphone having a telephone keypad.
  29. 22. The dataconferencing appliance of claim 21, further comprising a display device.
  30. 22. The dataconferencing appliance of claim 21, further comprising a display device and a speakerphone.
  31. The method of claim 21,
    housing; And
    And at least one network cable terminated in a network connector and retractable into the housing when not in use.
  32. 22. The dataconferencing appliance of claim 21, further comprising a PC-Video-IN connector for attaching an image source.
  33. 22. The apparatus of claim 21, further comprising: (a) an image source; (b) a display device; And (c) a wireless networking module configured for wireless communication between the dataconferencing device and a wireless device selected from the group of infrastructure wireless networking access points.
  34. 22. The dataconferencing appliance of claim 21, further comprising a USB connector for connecting the dataconferencing appliance to the local display device.
  35. 22. The dataconferencing appliance of claim 21, further comprising a DVI connector for connecting the dataconferencing appliance to the local display device.
  36. 22. The dataconferencing appliance of claim 21, further comprising a speakerphone toggle switch for controlling a speakerphone and an on-hook / off-hook state of the speakerphone.
  37. 22. The dataconferencing appliance of claim 21, further comprising an electronic projector.
  38. 22. The apparatus of claim 21, further comprising an image processing subsystem in communication with the network interface, the image processing subsystem compressing the compressed image data before receiving and displaying the compressed image data on the local display device. And to release the dataconferencing device.
  39. A dataconferencing device for use at the local site to facilitate a dataconferencing session between a local site and at least one geographically remote site, wherein the local and remote sites share a shared voice call network and a shared data network. Accessible via the remote site, the remote site having a remote dataconferencing device connected to the voice calling network and the data network, wherein at least one of the local and remote sites has an image source for generating image data representing an image Wherein the local site has a local display device that displays the image at the local site, wherein the dataconferencing apparatus is provided.
    A telephone adapter connecting the telephone receiver to the voice calling network such that a voice calling session can be established between the telephone receiver and the remote site via the voice calling network, the telephone adapter monitoring the voice calling session and The telephone adapter including circuitry for transmitting signals within a calling session;
    A network interface connecting the data conferencing device to the data network;
    An image processing subsystem in communication with the network interface and the local display device, the image processing subsystem configured to receive uncompressed image data and compress the image data prior to transmission over the data network; The subsystem is configured to receive compressed image data via the data network and decompress the compressed image data prior to display via the local display device; And
    A data conference control unit connected to the telephone adapter and the network interface, the data conference control unit configured to communicate with the local display device, the data conference control unit obtaining a network access code and the telephone adapter receiving the remote data Implement a negotiation process to generate and transmit a signal indicative of the network access code within the voice call session for reception by a conferencing device, wherein the dataconference control unit is transmitted from the remote dataconferencing device within the voice call session. In response to receiving a remote signal at the telephone adapter, the remote signal representing a remote network access code, and when the remote signal is received, the data using the remote network access code. Establishing a data communication session between the local and remote sites via a network such that image data can be transferred between the local and remote sites via the data network for display via the local and remote display devices. And a dataconference control unit.
  40. A dataconferencing device for use at the local site to facilitate a dataconferencing session between a local site and at least one geographically remote site, wherein the local and remote sites share a shared voice call network and a shared data network. Accessible via the remote site, the remote site having a remote dataconferencing device connected to the voice calling network and the data network, wherein at least one of the local and remote sites has an image source for generating image data representing an image Wherein the local site has a pixel resolution for displaying the image at the local site.
    A telephone adapter connecting the telephone receiver to the voice calling network such that a voice calling session can be established between the telephone receiver and the remote site via the voice calling network, the telephone adapter monitoring the voice calling session and The telephone adapter including circuitry for transmitting signals within a calling session;
    A network interface connecting the data conferencing device to the data network;
    An image processing subsystem in communication with the local display device, the image processing subsystem configured to receive image data and resize the image data to match the pixel resolution prior to display of the image on the local display; Image processing subsystem;
    A data conference control unit connected to the telephone adapter and the network interface, the data conference control unit configured to communicate with the local display device, the data conference control unit obtaining a network access code and the telephone adapter receiving the remote data Implement a negotiation process to generate and transmit a signal indicative of the network access code within the voice call session for reception by a conferencing device, wherein the dataconference control unit is transmitted from the remote dataconferencing device within the voice call session. In response to receiving a remote signal at the telephone adapter, the remote signal representing a remote network access code, and when the remote signal is received, the data using the remote network access code. By establishing a data communication session between the local and remote sites via a network, image data can be transferred between the local and remote sites via the data network for display via the local and remote display devices. And a dataconference control unit.
  41. A distributed dataconferencing system for use with multiple sites accessible by a shared voice calling network and a shared data network, each of the sites including a display device, wherein:
    At each of these sites,
    (a) the telephone receiver coupled to the voice calling network for establishing a voice call session with telephone receivers at other sites via the voice calling network for transmission of voice communication;
    (b) a network interface coupled to the data network,
    (c) a dataconference control unit coupled to the voice calling network and coupled to the network interface and the display device at the site, and
    (d) a housing configured to include the network interface and the data conference control unit in an integrated dataconferencing device;
    At one or more of the sites,
    An input key coupled to the data conference control unit,
    A negotiation process implemented in the data conference control units, the negotiation process responsive to manual operation of the input key to obtain a network access code and to transmit the network access code within the voice call session, the negotiation process In response to receiving a network access code received via a voice call session, between the sites over the data network using one or both of the network access code and the received network access code; The negotiation process, establishing a data communication session in parallel, and
    At least one image source for generating image data representing an image, the image source coupled to one of the network interfaces for transmitting the image data to the sites via the data network, via the display devices; And the image source for facilitating display of the image at the sites.
  42. The method of claim 41, wherein at each of the sites:
    And an image processing subsystem coupled to the network interface and the display device, the image processing subsystem receiving image data, compressing the image data prior to transmission over the data network, and over the data network. And decompress the compressed image data upon receipt of the compressed image data.
  43. A distributed dataconferencing system for use with multiple sites accessible by a shared voice calling network and a shared data network, each of the sites comprising a display device having a pixel resolution, wherein the dataconferencing system comprises:
    At each of these sites,
    (a) the telephone receiver coupled to the voice calling network for establishing a voice call session with telephone receivers at other sites via the voice calling network for transmission of voice communication;
    (b) a network interface coupled to the data network,
    (c) a dataconference control unit coupled to the voice calling network and coupled to the network interface and the display device at the site, and
    (d) an image processing subsystem coupled to the network interface and the display device, wherein the image processing subsystem receives image data and adjusts the image data to match the pixel resolution of the display device at the site prior to display of the image. The image processing subsystem, configured to resize
    At one or more of the sites,
    An input key coupled to the data conference control unit,
    A negotiation process implemented in the data conference control units, the negotiation process responsive to manual operation of the input key to obtain a network access code and to transmit the network access code within the voice call session, the negotiation process In response to receiving a network access code received via a voice call session, establishing a data communication session between the sites over the data network using one or both of the network access code and the received network access code. , The negotiation process, and
    At least one image source for generating image data representing an image, the image source coupled to one of the network interfaces for transmitting the image data to the sites via the data network, via the display devices; And the image source for facilitating display of the image at the sites.
  44. 42. The dataconferencing system of claim 41, wherein at one or more of the sites, the dataconference control unit, the network interface, and the input key are integrated in a dataconferencing device.
  45. 45. The dataconferencing system of claim 44, wherein the dataconferencing device comprises an integrated speakerphone.
  46. 45. The dataconferencing system of claim 44, wherein the dataconferencing appliance comprises a wireless network module.
  47. 42. The dataconferencing system of claim 41, wherein the network interface at one or more of the sites comprises a wireless networking module.
  48. 48. The dataconferencing system of claim 47, wherein the wireless networking module is a short-range peer-to-peer wireless networking module.
  49. A distributed dataconferencing system for use with multiple sites accessible by a shared voice calling network and a shared data network, each of the sites including a display device, wherein:
    At each of these sites,
    (a) the telephone receiver coupled to the voice calling network for establishing a voice call session with telephone receivers at other sites via the voice calling network for transmission of voice communication;
    (b) a network interface coupled to the data network,
    (c) a dataconference control unit coupled to the voice calling network and coupled to the network interface and the display device at the site, and
    (d) a telephone adapter connecting said telephone receiver and said data conference control unit to an incoming telephone line of said voice calling network, said telephone adapter monitoring the status of said incoming telephone line and reporting status information for said data conference control unit; The telephone adapter, and
    At one or more of the sites,
    An input key coupled to the data conference control unit,
    A negotiation process implemented in the data conference control units, the negotiation process responsive to manual operation of the input key to obtain a network access code and to transmit the network access code within the voice call session, the negotiation process In response to receiving a network access code received via a voice call session, one or both of the network access code and the received network access code is used to establish a data communication session between the sites over the data network; The negotiation process of the data conference control unit causes control signals to be issued from the data conference control unit to the telephone adapter in response to manual activation of the input key, the control signals representing the network access code. The electronic of the audio signal generated in order to transmit in a voice call directed to the telephone adapter, the negotiation process, and the
    At least one image source for generating image data representing an image, the image source coupled to one of the network interfaces for transmitting the image data to the sites via the data network, via the display devices; And the image source for facilitating display of the image at the sites.
  50. 42. The dataconferencing system of claim 41, further comprising an internet conference server accessible on the data network at an IP address, wherein the network access code sent in the voice call session comprises the IP address.
  51. 42. The dataconferencing system of claim 41, wherein the network access code sent in the voice call session comprises a multicast group address.
  52. 42. The dataconferencing system of claim 41, wherein the image source comprises multiple image sources for generating a plurality of images, the image sources coupled to one or more of the network interfaces.
  53. 42. The dataconferencing system of claim 41, wherein the network interface, display device, and dataconference control unit are integrated into a computer workstation at one or more of the sites.
  54. 54. The dataconferencing system of claim 53, wherein the computer workstation comprises the image source.
  55. A dataconferencing system for use in a voice calling network and a data network accessible by first and second sites, the method comprising:
    A first display device disposed at the first site;
    A first integrated dataconferencing apparatus coupled to the voice calling network, the data network, and the first display device at the first site;
    A second display device disposed at the second site;
    A second integrated dataconferencing apparatus coupled to the voice calling network, the data network, and the second display device at the second site; And
    An image source coupled to one of the first and second dataconferencing devices,
    Each of the first and second dataconferencing devices obtains a network access code, transmits the network access code to another dataconferencing device via the voice calling network, and uses the network access code to communicate the data over the data network. Implementing a negotiation process between the dataconferencing devices to establish a data communication session in parallel with the voice call session.
  56. 56. The apparatus of claim 55, wherein the image source is configured to generate image data representative of an image, and wherein the first and second dataconferencing devices communicate the image data between the first and second sites via the data network. Configured to send,
    A first image processing subsystem in communication with the first display device; And
    A second image processing subsystem in communication with the second display device,
    The first and second image processing subsystems compress the image data before receiving the image data and transmitting it through the data network and compressing the compressed image data upon receipt of the compressed image data via the data network. And a dataconferencing system configured to decompress.
  57. 56. The display device of claim 55, wherein the first and second display devices each have a pixel resolution,
    A first image processing subsystem in communication with the first display device; And
    Further comprising a second image processing subsystem in communication with the first display device,
    And the first and second image processing subsystems are configured to receive the image data and resize the image data to match the pixel resolution of each of the first and second display devices.
  58. 56. The dataconferencing system of claim 55, wherein at least one of the dataconferencing devices comprises an integrated speakerphone.
  59. 56. The dataconferencing system of claim 55, wherein at least one of the dataconferencing devices comprises a wireless networking module.
  60. 60. The dataconferencing system of claim 59, wherein the wireless networking module comprises a short-range peer-to-peer wireless networking module.
  61. A dataconferencing system for use in a voice calling network and a data network accessible by first and second sites, the method comprising:
    A first display device disposed at the first site;
    A first dataconferencing apparatus coupled to the voice calling network, the data network, and the first display device at the first site;
    A second display device disposed at the second site;
    A second dataconferencing apparatus coupled to the voice call network, the data network, and the second display device at the second site; And
    An image source coupled to one of the first and second dataconferencing devices,
    Each of the first and second dataconferencing devices obtains a network access code, transmits the network access code to another dataconferencing device via the voice calling network, and uses the network access code to communicate the data over the data network. Implement a negotiation process for establishing a data communication session between the dataconferencing devices,
    Each of the first and second dataconferencing devices includes a dataconference control unit and a telephone adapter for connecting the dataconference control unit to an incoming telephone line of the voice calling network, the telephone adapter indicating the state of the incoming telephone line. Monitor and report status information to the dataconferencing control unit, the negotiation process of the dataconferencing device causing control signals to be issued from the dataconferencing control unit to the telephone adapter, wherein the control signals cause the network access code to And one or more electronically generated audio signals representative to the telephony adapter for transmission in the voice call.
  62. 56. The apparatus of claim 55, wherein each of the first and second dataconferencing devices includes a dataconference control unit for executing the negotiation process, and a network interface for connecting the dataconference control unit and the image source to the data network. Dataconferencing system.
  63. 56. The dataconferencing system of claim 55, wherein each of the first and second display devices comprises a network interface connecting the display device to the dataconferencing device via the data network.
  64. 56. The apparatus of claim 55, further comprising an internet conference server accessible on the data network by IP address,
    And said network access code sent over said voice calling network comprises said IP address.
  65. 56. The dataconferencing system of claim 55, wherein the network access code sent over the voice calling network comprises a multicast group address.
  66. 56. The dataconferencing system of claim 55, wherein the image source comprises multiple image sources for generating a plurality of images, the image sources coupled to one or more of the dataconferencing devices.
  67. 56. The dataconferencing system of claim 55, wherein the first dataconferencing apparatus and the first display device are integrated in a computer workstation.
  68. 68. The dataconferencing system of claim 67, wherein the computer workstation comprises the image source.
KR1020047005682A 2001-10-17 2002-09-27 Dataconferencing method, appliance, and system KR100944208B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US33025301P true 2001-10-17 2001-10-17
US60/330,253 2001-10-17
US10/043,626 2002-01-08
US10/043,770 2002-01-08
US10/043,770 US20030072298A1 (en) 2001-10-17 2002-01-08 Dataconferencing method
US10/043,626 US7237004B2 (en) 2001-10-17 2002-01-08 Dataconferencing appliance and system
PCT/US2002/030848 WO2003034235A1 (en) 2001-10-17 2002-09-27 Dataconferencing method, appliance, and system

Publications (2)

Publication Number Publication Date
KR20040068123A KR20040068123A (en) 2004-07-30
KR100944208B1 true KR100944208B1 (en) 2010-03-03

Family

ID=27366361

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020047005682A KR100944208B1 (en) 2001-10-17 2002-09-27 Dataconferencing method, appliance, and system

Country Status (6)

Country Link
EP (1) EP1436707A4 (en)
JP (1) JP4176637B2 (en)
KR (1) KR100944208B1 (en)
CN (1) CN100354841C (en)
HK (1) HK1075104A1 (en)
WO (1) WO2003034235A1 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
DE10348149B4 (en) * 2003-10-13 2014-04-03 Michael Schlögl Procedure for conducting a telephone conference
EP1603358A1 (en) 2004-06-04 2005-12-07 Sony Ericsson Mobile Communications AB Radio communication equipment and method of controlling said radio communication equipment
US8150920B2 (en) * 2004-11-01 2012-04-03 Nokia Corporation System, method and computer program product for providing content to a terminal and directing the rendering of such content at the terminal
US7508810B2 (en) 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
US8433756B2 (en) * 2006-10-02 2013-04-30 Tp Lab, Inc. Multiple terminal collaboration system
KR20090011436A (en) * 2007-07-26 2009-02-02 삼성전자주식회사 Display apparatus, control method thereof and display system of the same
JP5185390B2 (en) 2007-10-20 2013-04-17 エアビクティ インコーポレイテッド Wireless in-band signaling method and system using in-vehicle system
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8831823B2 (en) 2009-10-15 2014-09-09 Airbiquity Inc. Centralized management of motor vehicle software applications and services
US8838332B2 (en) 2009-10-15 2014-09-16 Airbiquity Inc. Centralized management of motor vehicle software applications and services
US9002574B2 (en) 2009-10-15 2015-04-07 Airbiquity Inc. Mobile integration platform (MIP) integrated handset application proxy (HAP)
US9370029B2 (en) 2009-10-15 2016-06-14 Airbiquity Inc. Efficient headunit communication integration
US8942888B2 (en) 2009-10-15 2015-01-27 Airbiquity Inc. Extensible scheme for operating vehicle head unit as extended interface for mobile device
US8249865B2 (en) 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
CN102307190A (en) * 2011-08-19 2012-01-04 中兴通讯股份有限公司 Method for realizing multimedia conference and multimedia conference platform
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
JP6051549B2 (en) * 2012-03-16 2016-12-27 株式会社リコー Communication control system, control device, program and electronic information board
EP2859464A4 (en) 2012-06-08 2015-08-05 Airbiquity Inc Assessment of electronic sensor data to remotely identify a motor vehicle and monitor driver behavior
EP3235171A4 (en) * 2014-12-17 2018-08-22 Hewlett-Packard Development Company, L.P. Host a conference call
CN209118258U (en) * 2018-03-19 2019-07-16 广州视源电子科技股份有限公司 A kind of wireless screen transmission device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980063406A (en) * 1996-12-06 1998-10-07 포맨제프리엘 Multimedia conferencing system using a parallel network
KR100188495B1 (en) 1994-06-27 1999-06-01 윌리암 티. 엘리스 Method for performing intelligent network services , with an isdn network terminator located at a subscriber's premise
KR20000045495A (en) * 1998-12-30 2000-07-15 이계철 Method for composing gui and processing callback in multimedia conference system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793961A (en) * 1994-11-18 1998-08-11 Intel Corporation Computer system with data conference capability
JPH10150647A (en) * 1996-11-19 1998-06-02 Fujitsu Ltd Videoconference system
EP0969687A1 (en) * 1998-07-02 2000-01-05 AT&T Corp. Internet based IP multicast conferencing and reservation system
GB2357659B (en) * 1999-12-23 2003-12-24 Mitel Corp Communication system architecture for voice first collaboration

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100188495B1 (en) 1994-06-27 1999-06-01 윌리암 티. 엘리스 Method for performing intelligent network services , with an isdn network terminator located at a subscriber's premise
KR19980063406A (en) * 1996-12-06 1998-10-07 포맨제프리엘 Multimedia conferencing system using a parallel network
KR20000045495A (en) * 1998-12-30 2000-07-15 이계철 Method for composing gui and processing callback in multimedia conference system

Also Published As

Publication number Publication date
CN1605070A (en) 2005-04-06
HK1075104A1 (en) 2008-08-15
EP1436707A1 (en) 2004-07-14
JP2005506018A (en) 2005-02-24
WO2003034235A1 (en) 2003-04-24
KR20040068123A (en) 2004-07-30
CN100354841C (en) 2007-12-12
JP4176637B2 (en) 2008-11-05
EP1436707A4 (en) 2010-07-21

Similar Documents

Publication Publication Date Title
US6671272B2 (en) Internet switch box, system and method for internet telephony
KR100445284B1 (en) An internet telephone network system and a network access method and a telephone equipment adapter
US6425131B2 (en) Method and apparatus for internet co-browsing over cable television and controlled through computer telephony
US6134223A (en) Videophone apparatus, method and system for audio and video conferencing and telephony
US6731642B1 (en) Internet telephony using network address translation
US6928082B2 (en) System and method for determining a connectionless communication path for communicating audio data through an address and port translation device
US6704294B1 (en) Establishment of a PSTN and internet multimedia collaboration session
US8144854B2 (en) Conference bridge which detects control information embedded in audio information to prioritize operations
JP2726630B2 (en) Gateway device and the gateway METHOD
US7742588B2 (en) Speakerphone establishing and using a second connection of graphics information
US7525928B2 (en) System and process for discovery of network-connected devices at remote sites using audio-based discovery techniques
US7283517B2 (en) Stand alone multi-media terminal adapter with network address translation and port partitioning
US8947487B2 (en) Method and apparatus for combining speakerphone and video conference unit operations
US6222859B1 (en) Data communication method, data communication terminal, data communication system and communication control system
US7031443B2 (en) System and method for remote access to a telephone
US20050213731A1 (en) Conference endpoint instructing conference bridge to mute participants
US7864938B2 (en) Speakerphone transmitting URL information to a remote device
US7072341B2 (en) Real time streaming media communication system
KR100372036B1 (en) Dual phone system
US6795429B1 (en) System and method for associating notes with a portable information device on a network telephony call
KR100644579B1 (en) Real-time audio/video communication device in internet and method thereof
US7567549B2 (en) Computer telephony integration adapter
JP4566177B2 (en) Telecommunications system
US20050213517A1 (en) Conference endpoint controlling audio volume of a remote device
US8102984B2 (en) Speakerphone and conference bridge which receive and provide participant monitoring information

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
N231 Notification of change of applicant
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20130118

Year of fee payment: 4

LAPS Lapse due to unpaid annual fee