Telephonic communications – Supervisory or control line signaling – Substation originated
Patent
1997-02-28
1999-11-02
Le, N.
Telephonic communications
Supervisory or control line signaling
Substation originated
379355, 379396, H04M 100
Patent
active
059784687
ABSTRACT:
A telephone device and method that enable the user of the telephone to visibly read a number stored in a memory of the telephone even though the telephone does not have a numeric display. The telephone has at least one light, such as an LED, that is visible by a person using the telephone. The light is coupled to a controller that consists of a microprocessor and an LED driver. The microprocessor is coupled to the various keys on the telephone. When the microprocessor receives a command, via the telephone keys, for viewing a specific number, the microprocessor reads that number from memory. The microprocessor then instructs the driver to flash the light or lights on the telephone in such a manner that a person viewing the lights would become cognizant of the number. Thus, a person watching the telephones lights can read numbers from the memory of the telephone, even though the telephone does not have a numeric display.
REFERENCES:
patent: 3715520 (1973-02-01), Lambrou
patent: 4743897 (1988-05-01), Perez
patent: 5146490 (1992-09-01), Beckman
patent: 5392337 (1995-02-01), Baals et al.
patent: 5506895 (1996-04-01), Hirai et al.
patent: 5703936 (1997-12-01), Tsuchida et al.
Hsieh Shih-Wen
Le N.
Lucent Technologies - Inc.
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