Telephone sequential number dialer with number incrementing

Details Telephone sequential number dialer with number incrementing Telephone sequential number dialer with number incrementing

1978-07-03

1980-02-12

Cardillo, Jr., Raymond F.

179 6D, H04M 127

Patent

active

041885104

ABSTRACT:
A telephone sequential dialer features a shift register which has a number of bit positions which are one more than the maximum number of digits to be dialed. A plurality of consecutive ONES starting at the leading edge of the shift register are inserted into it, the number of ONES inserted being equal to the difference between the number of shift register bit positions and the number of digits of the telephone number to be called. The digits of the telephone number to be called are inserted into a counter whenever a ONE is detected in the shift register by a scanning means, and a dial pulse is generated whenever the counter is decremented. The dial pulses are no longer generated when the counter reaches zero.

REFERENCES:
patent: 3479654 (1969-11-01), Bobeck et al.
patent: 3482058 (1969-12-01), Guennou
patent: 3718771 (1973-02-01), Bank
patent: 3812296 (1974-05-01), Paraskevakos
patent: 3882284 (1975-05-01), Munday
patent: 3943289 (1976-03-01), Sheldon et al.
Palmer, Automatic Telephone Dialer, IBM Tech. Disc. Bulletin, vol. 14, No. 12, 5/72, p. 3821.

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