Portable automatic number outpulser
Data telecommunications terminal
Convertible acoustic telephone coupler
Portable telephone communication device for the hearing impaired
Communication apparatus for the handicapped
Modem telephone interface circuit
Portable keyboard operated telecommunications system
Teleconferencing and teaching method and apparatus
ApplicationNo. 454011 filed on 05/30/1995
US Classes:379/93.27, Alphanumeric379/52, INCLUDING AID FOR HANDICAPPED USER (E.G., VISUAL, TACTILE, HEARING AID COUPLING)379/67.1, AUDIO MESSAGE STORAGE, RETRIEVAL, OR SYNTHESIS379/77, Control by generated tone379/88.11, Display of message related information379/93.18, Having tone code recognition for generating alphanumeric characters379/93.37, Having acoustic link379/442, With circuit connection to terminal379/443, Including coupler (e.g., inductive)379/444Acoustic
ExaminersPrimary: Zele, Krista M.
Assistant: Wolinsky, Scott
Attorney, Agent or Firm
International ClassesH04M 011/00
AbstractAn interactive voice communication terminal (10) provides alpha and numeric characters transmitted from a DTMF generator (36) to access a database by interfacing with the mouthpiece (24) of a telephone handset (26) via a transducer (22). A keypad (14) is operable to allow selection of one of multiple characters associated with alpha characters and numeric characters. A table of DTMF strings associated with each key is stored in a memory (34). In response to depression of a key on the keypad (14), a centralized controller (32) controls the DTMF generator (36) to output the sequence associated with the depressed key that was stored in the memory (34) to transducer (22) via a driver (38). The tables in the memory (34) can be a combination of DTMF sequences for alpha characters and single number sequences for numerical sequences or they can be fixed-length sequences for all numerical and alpha characters. Further, a Learn mode is provided for allowing the user to program the DTMF sequence for a given key on the keypad (14).