发明名称 |
Communication terminal for processing voice and graphical information |
摘要 |
A communication terminal for processing voice and graphical information having a telephone set including a handset supported by a housing with an input device mounted within the housing for establishing communication with a distant terminal. The input device includes a flat display screen having a presentation portion and a switching field portion. A transparent resistive coating which conducts electrical signals and which is mounted over the presentation portion is manually contacted by a pen which extracts a signal for identifying the point of contact. The pen is used to touch the portion of the screen representing a dial keypad and various switching functions. The extracted signals are digitized and transmitted to distant terminals via a control circuit which processes both voice and graphical information.
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申请公布号 |
US4653086(A) |
申请公布日期 |
1987.03.24 |
申请号 |
US19850712303 |
申请日期 |
1985.03.15 |
申请人 |
INTERNATIONAL STANDARD ELECTRIC CORPORATION |
发明人 |
LAUBE, MANFRED |
分类号 |
H04L29/06;H04M1/23;H04M1/247;H04M1/2745;H04M11/06;(IPC1-7):H04M11/00;H04M1/272 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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