Abstract:
PROBLEM TO BE SOLVED: To provide a videoconferencing system having a videoconferencing unit which can use portable devices as peripherals for the system.SOLUTION: Portable devices 50 obtain near-end audio and transmit the audio to a videoconferencing unit 100 via a wireless connection. Then, the videoconferencing unit transmits the near-end audio received from the loudest portable device along with near-end video to a far-end 30. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller which compensates for differences in the clocks used in A/D and D/A converters of the loudspeaker and microphone.
Abstract:
PROBLEM TO BE SOLVED: To provide an audio codec for audio and video conferencing which compress high-fidelity audio input so that a resulting signal for transmission retains the best quality but requires the least number of bits.SOLUTION: A scalable audio codec determines first and second bit allocations for each frame of input audio. First bits are allocated for a first frequency band, and second bits are allocated for a second frequency band. The allocations are made on a frame-by-frame basis based on an energy ratio between the two bands. The codec transform-codes both frequency bands into two sets of transform coefficients, which are then packetized based on the bit allocations. Additionally, frequency regions of the transform coefficients are arranged in order of importance determined by power levels and perceptual modeling. Should bit stripping occur, a decoder at a receiving device can produce audio of suitable quality given that bits have been allocated between the bands and the regions of the transform coefficients have been ordered by importance.
Abstract:
PROBLEM TO BE SOLVED: To provide a videoconferencing apparatus that can dynamically adjust image capturing of participants in a video conference depending on the environment of the video conference, seating arrangement of the participants, and the person who is speaking.SOLUTION: A videoconferencing apparatus automatically tracks speakers in a room and dynamically switches between a controlled, people-view camera 50A and a fixed, room-view camera 50A. When no one is speaking, the apparatus 10 shows the room view to the far-end. When there is a dominant speaker in the room, the apparatus directs the people-view camera at the dominant speaker and switches from the room-view camera to the people-view camera. When there is a new speaker in the room, the apparatus switches to the room-view camera first, directs the people-view camera at the new speaker, and then switches to the people-view camera directed at the new speaker. When there are two near-end speakers engaged in a conversation, the apparatus tracks them and causes the people-view camera to zoom-in so that both speakers are in view.
Abstract:
PROBLEM TO BE SOLVED: To dynamically adjust image capturing of participants in a video conference depending on the environment of the video conference, seating arrangement of the participants, and the person who is speaking.SOLUTION: A videoconferencing apparatus automatically tracks speakers in a room and dynamically switches between a controlled, people-view camera and a fixed, room-view camera. When no one is speaking, the apparatus shows the room view to the far-end. When there is a dominant speaker in the room, the apparatus directs the people-view camera at the dominant speaker and switches from the room-view camera to the people-view camera. When there is a new speaker in the room, the apparatus switches to the room-view camera first, directs the people-view camera at the new speaker, and then switches to the people-view camera directed at the new speaker. When there are two near-end speakers engaged in a conversation, the apparatus tracks the speakers and zooms-in the people-view camera so that both speakers are in view.
Abstract:
PROBLEM TO BE SOLVED: To provide a method to efficiently determining and displaying pertinent information determined from a plurality of inputs and calculated parameter related to a video conference. SOLUTION: The method for efficiently determining and displaying personal information is performed using an input from a user at an endpoint and information calculated during a video conference so as to present the personal information about a current speaker to all participants. A video conference system is typically used by a plurality of people at multiple locations. The method allows more users to interact and allows knowledge transfer among the participants. By sharing the information at different locations, each participant is more aware of a speaker at any given time and is more aware of importance to be applied to what the particular speaker talks. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a system and a method for preparing video conference images. SOLUTION: An endpoint has a wide screen display, and the disclosed system creates an image, with an aspect ratio of about 16:9 for the endpoint. The image is altered or modified so as to vary the aspect ratio to about 4:3. In one example, two portions can be added to the image to increase the overall height of the image. The wide screen display is set to a zoom mode and is capable of substantially displaying the image without added portions. Alternatively, the image is stretched along its height by a factor of 4/3. The wide screen display is set to the wide mode and is capable of substantially displaying the image without the stretched height. The disclosed system and method can receive signals where the endpoint has a wide screen display and can also inform a user at the endpoint, to set the wide screen display to a wide or a zoom modes. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain a method and an apparatus enhancing a video conference functions thereby managing and controlling all associated conference devices from a centralized position using a simple and intuitive interface. SOLUTION: A simple speakerphone control interface or a remote controller thereof is used to control functions of a speakerphone itself, connected video conference facilities, a room control device and other connected devices. Furthermore, the room control device controls all associated room accessories such as doors, windows, blinders, illumination, blackboards or white boards, roll-up screens and the like. A number of connection methods like wired HSSB or wireless connections are utilized among a plurality or all of conference system elements. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for improving audio sharpness in an audio conferencing unit. SOLUTION: A plurality of microphones and a plurality of audio channels are used to select only the best microphone for representing each audio channel. A plurality of microphone signals are mixed according to locations of the microphones in the room such that a single signal representing one audio channel can be formed. The audio signal is further processed to provide another feature. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To allocate and release resources dynamically according to the current needs of each conferee and a session.SOLUTION: A novel universal bridge (UB) can handle and conduct multimedia multipoint conferences between a plurality of media relay endpoints (MREs) and legacy endpoints (LEPs) without using a media relay multipoint control unit (MRM), a multipoint control unit (MCU), nor a gateway. Further, a UB can be configured to allocate and release resources dynamically according to the current needs of each conferee and a session.
Abstract:
PROBLEM TO BE SOLVED: To provide a multilingual multipoint videoconferencing system which provides real-time translation of speech by conferees.SOLUTION: Audio streams containing speech may be converted into text (220 and 250) and inserted as subtitles into video streams (250, 240). The speech may also be translated from one language to another language (240), the translated speech is inserted into the video streams. The subtitles are selected or the original audio stream is replaced with speech in the other language generated by a text to speech engine (220, 240 and 250). Different conferees may receive different translations of the same speech on the basis of information provided by each conferee on desired languages (210).