GATEWAY DEVICE AND GATEWAY METHOD

    公开(公告)号:JPH08163275A

    公开(公告)日:1996-06-21

    申请号:JP30350494

    申请日:1994-12-07

    Applicant: IBM

    Abstract: PURPOSE: To realize a video conference with conference participants (nodes) at outside the premises that are connected via a general line by using an existing private line and a LAN. CONSTITUTION: A gateway device 20 that relays between a general line at the outside the premises and a private extension telephone set 30 on the premises as well as an information processing unit 40 on a LAN 52 via a private branch of exchanger 10 is provided with a MODEM that is used to receive a incoming all from the general line, to make a call to the general line conversely and to modulate/demodulate a signal, an assembling/dis-assembling means that assembles voice information and computer data to generate a packet or dis-assembles the packet into voice information and computer data conversely, a LAN adaptor 75 that sends/receives the computer data via the LAN, a dial means 85 that dials the extension telephone set, a signal processing means that codes or decodes the voice information conversely, and an AD/DA converter means 84 that converts an analog signal into a digital signal or conversely converts a digital signal into an analog signal conversely.

    DATA DISPLAY SYSTEM AND METHOD AND DEVICE FOR DATA DISPLAY

    公开(公告)号:JP2000184177A

    公开(公告)日:2000-06-30

    申请号:JP35402198

    申请日:1998-12-14

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To prevent the illegal use of picture contents from which visual additional information is removed. SOLUTION: Visible marking picture data embedded with a sent visible mark is stored in a picture storage 200, and a marking 202 removes the visible mark from this visible marking picture and simultaneously embeds it with an invisible mark in parallel by integrated indivisible processing to generate invisible marking data which is not visually different from original picture data. A fragment picture generation part 206 generates n kinds of fragment picture data which look like the original picture by alternative display in spite of individual partial change. A picture display 212 displays these fragment picture data at intervals of a time Ti to show them to a user as sample picture data.

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