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Home Pulse Selector Control Device

IP.com Disclosure Number: IPCOM000096466D
Original Publication Date: 1963-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Cunningham, JM: AUTHOR [+2]

Abstract

Timing pulses are generated at regular intervals by timing disk 10 and pickup transducer 11 from notches 12. Once each revolution of disk 10, a home pulse is generated from notch 13 at a time between two regular timing pulses. A home selector pulse is generated once each revolution by selector disk 14 ad pickup transducer 15 from a single notch 16. The two disks 10 ad 14 rotate at different rates in a predetermined ratio so that only one out of every n home pulses occurs coincidently with a selector pulse ad is gated to checking circuit 17.

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Home Pulse Selector Control Device

Timing pulses are generated at regular intervals by timing disk 10 and pickup transducer 11 from notches 12. Once each revolution of disk 10, a home pulse is generated from notch 13 at a time between two regular timing pulses. A home selector pulse is generated once each revolution by selector disk 14 ad pickup transducer 15 from a single notch 16. The two disks 10 ad 14 rotate at different rates in a predetermined ratio so that only one out of every n home pulses occurs coincidently with a selector pulse ad is gated to checking circuit 17.

The timing pulses from disk 10 are amplified ad applied simultaneously to the on sides of time trigger 18 and home trigger 19. The on gate of trigger 18 is normally up at timing pulse time so that it is switched on by the leading edge of the timing pulse. Switching trigger 18 on produces the following effects: 1. Output voltage is up on line 20 to And 21. 2. Timing pulse is applied to timed circuit 22.
3. Single shot 23 is fired and the on gate of trigger 19 is switched up and on gate of trigger 18 is switched down. 4. Off gate of trigger 18 is switched up.

The pulse from single shot 23 arrives after the regular timing pulse. Therefore, trigger 19 is not switched on. The trailing edge of a pulse from inverter 24 switches trigger 18 off and a pulse is applied to the off side of trigger 19. Upon absent coincident voltage pulses from the selector disk 14 and home trigger 19, no checking signal i...