Method of and apparatus for integrated voice (audio) communication simultaneously with "under voice" user-transparent digital data between telephone instruments
AssigneeAcademy of Applied Science
InventorRichard D. Greenblatt
Life of this patent
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Abstract
A novel method of and apparatus for voice communication and transparent, non-interfering, automatic digital data exchange between appropriately equipped telephone terminals having cooperative digital signal processing and visual display equipment, using special recognition signal protocol triggering signals and providing modem capability for FAX, printer, microprocessor, answer machines and the like for providing extended services using in-band signalling sensible by users and machines. Such method is useful both with ordinary telephone exchanges and ISDN type exchanges.
Claims16
A method of voice and simultaneous user-imperceptable digital data communication between a pair of telephones connectable through a telephone exchange that comprises, providing each telephone with digital processing equipment for cooperation therebetween;
- programming the processing automatically to transmit a distinctive audio recognition signal from the receiving telephone when connected to the calling telephone and from the calling telephone back to the receiving telephone to indicate to the users that both phones are specially equpped for cooperation;
- and in which said recognition signal is transmitted between the calling and receiving telephone digital processing equipments to alert that the phones are specially equpped for cooperation between their respective digital processing equipments;
- and in which the digital data originating from the programming in at least one of the telephone processing equipments is digitally transmitted therefrom in a manner imperceptible to the telephone users and during their continued voice conversation.
Apparatus for combining voice communication simultaneously with digital alpha-numeric data transmission and reception between a pair of telephones connected with a telephone exchange having, in combination, cooperative digital signal processing means and alpha-numeric display means provided at each telephone;
- means for generating a distinctive recognition signal at each telephone indicative of the existence of said digital processing and display capability and comprising a distinctive time-varying audio signal within the frequency band of the audio communication and audible to the users and also automatically recognizable by the respective digital signal processing means;
- means controlled by the processing means of the processing means for causing the call-receiving telephone automatically to transmit said recognition signal upon the calling telephone user dialing and the receiving telephone user picking up telephone;
- means for thereupon causing the calling telephone to transmit its recognition signal so that both the calling and receiving users and the respective digital signal processing means at each telephone are aware of said capability at both telephones and are ready to exchange digital signals;
- and means controlled by the digital signal processing means for causing the exchange of digital signal data between the pair of telephones simultaneously with the voice communication and imperceptible to the telephone users and without interference with the voice communication.
Apparatus for combining voice communication simultaneously with digital alpha-numeric data transmission and reception between a pair of telephones connected with a telephone exchange having, in combination, cooperative digital signal processing means provided at each telephone provided with means for generating a distinctive recognition signal at each telephone for transmission to the other that indicates the existence of said digital processing capability and comprising a distinctive time-varying audio signal within the frequency band of the audio communication and audible to the users and also automatically recognizable by the respective digital signal processing means.
Dependencies are inferred from the claim text.