Title: Signal transmission with secrecy

Abstract: 1. In a privacy system in which the signals are divided into fragments on a time basis and the different fragments are delayed in transmission by different amounts to afford privacy, a timing means having a timing cycle divided into several periods, a relay individual to each period and individually operated during its respective period by said timing means, a plurality of delay devices to introduce delay into said signals, means controlled by said timing means to select a delay device for each timing period, and means jointly controlled by said relays and selecting means to operate the selected devices.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Myers, Oscar (Mount Vernon, NY, US)

Application Number: 495127
Filing Date: 1943-07-17
Publication_date: 1976-02-10
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Class(es): 380/22 380/35
Other Classes:
US Patent Ref:

1605023	Nov, 1926	Hartley	178/22.
1676321	Jul, 1928	Carpe	178/22.
1981114	Nov, 1934	Mitchell	179/1.
2312897	Mar, 1943	Guanella	179/1.
2364210	Dec, 1944	Guanella	179/1.
3012099	Dec, 1961	Busch et al.	179/1.
3012100	Dec, 1961	Mitchell	179/1.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Bermiel, H. A.
Attorney: Burgess; H. A., Hirsch; A. E.