Portable securities selector system

Details Portable securities selector system Portable securities selector system

1975-07-14

1976-08-24

Stellar, George G.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

179 2C, 179179, 340152T, H04M 1100

Patent

active

039768406

ABSTRACT:
A system for enabling securities information to be elicited and transactions to be automatically executed by an investor from a conventional telephone. A portable pocketsized data terminal having a keyboard, a display and status indicator lamps includes an acoustic coupler device for removable attachment to a telephone handset. A centralized computer receives information signals originating with the portable data terminal and specifying information or transaction execution requests, and transmits appropriate responses to the portable data terminal for display. Several levels of security are provided in the system.

REFERENCES:
patent: 2684996 (1954-07-01), Potts
patent: 3516062 (1970-06-01), Spraker
patent: 3657479 (1972-04-01), Sweenie et al.
patent: 3716835 (1973-02-01), Weinberg et al.
patent: 3757048 (1973-09-01), McAvoy et al.
patent: 3865994 (1975-02-01), Bender
patent: 3870821 (1975-03-01), Steury
Computer Decisions Nov. 1969 p. 72 "Batteries Power Acoustic Terminal".
IBM Technical Disclosure Bulletin "Walle. Terminal Keyboard with Acoustic Coupler" M. F. Davis et al. vol. 10 No. 3 Aug. 1967 pp. 188-189.

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