The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1988
Filed:
Jul. 30, 1986
James J Frimmel, Jr, Reston, VA (US);
Alan R Trefzger, Sterling, VA (US);
International Telesystems Corporation, Herndon, VA (US);
Abstract
Pseudorandom numbers are generated for telephone dialing in telephone call management systems by selecting a range of numbers to be dialed, successively randomly generating numbers within that range, comparing each randomly generated number as it is generated with numbers previously generated and recorded or called. When a new randomly generated number matches a previously generated number, a further number is generated and the compared. When no match is encountered, the new number is recorded or called. After recording or calling a predetermined amount of numbers within the range, remaining numbers to complete the range of numbers are selected sequentialy from an array of numbers. The final numbers are recorded or called in sequence, but the steps between the final numbers vary randomly according to the random generation of the numbers in the first part.