Remote terminal for central dictating system
US5598463A · kind A · utility
Inventors
Key dates
| Filing date | Oct 12, 1994 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Oct 12, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A control unit, connected to a telephone, sends tone signals to a central dictating/recording unit in response to a user pressing buttons on an auxiliary keypad. The auxiliary keypad, in the form of a thin, membrane-type switch unit, adheres to the back of the telephone handset. A substitute coil cord has additional conductors and connects the telephone handset and the auxiliary keypad to the control unit. In response to the user pressing a button on the auxiliary keypad, the control unit simulates the user pressing one or more buttons on the telephone dial by sending the appropriate series of DTMF tones to the dictating/recording unit. The user can reprogram the simulated series of telephone dial button presses sent in response to any auxiliary keypad button being pressed, released, and "clicked" (pressed and then quickly released).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.