发明授权
- 专利标题: Audiovisual telecommunication method and apparatus using a digital network
- 专利标题(中): 视听电信方法和使用数字网络的设备
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申请号: US871835申请日: 1997-06-09
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公开(公告)号: US6075553A公开(公告)日: 2000-06-13
- 发明人: Karen Martita Freeman , Herman Joseph Pieters , Jack Andrew Pitman, II
- 申请人: Karen Martita Freeman , Herman Joseph Pieters , Jack Andrew Pitman, II
- 申请人地址: NJ Murray Hill
- 专利权人: Lucent Technologies Inc.,AT&T Corp.
- 当前专利权人: Lucent Technologies Inc.,AT&T Corp.
- 当前专利权人地址: NJ Murray Hill
- 主分类号: H04M3/56
- IPC分类号: H04M3/56 ; H04M15/00 ; H04M17/00 ; H04N7/14 ; H04M11/00
摘要:
A videoconferencing network of audiovisual communication terminals is interconnected by a telephone network. Each terminal is activated only when the balance in a user account has been read and the account has been made available for debiting. The terminal includes a monitor system for playing out and receiving voice and picture information, an interface system for conditioning signals passing between the monitor system and the telephone network, and a database which contains the locations and telephone numbers of other terminals of the videoconferencing network. The terminal firer includes a display of information from the database, a pointing device by means of which a user can make a selection from the display by indicating the relevant position in the display, and a device for automatically dialing up the selected remote terminal.
公开/授权文献
- US5245140A Muffler 公开/授权日:1993-09-14