Charge transfer device
CA 1249059 A · Owner: N.V. Philips'Gloeilampenfabrieken · Inventors: Pelgrom, Marcellinus J.M.; Slotboom, Jan W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
12, ABSTRACT:, Charge transfer device. The invention relates to a charge-coupled device in, which the reset transistor of the output is clocked - with a positive threshold voltage - by a maximum voltage equal to the supply voltage VDD. The drain (14) of the reset transistor is adjusted by means of an auxiliary transistor (T1) controlled by a current source (T2) and having the same threshold voltage whose, gate (21) is applied to VDD and whose source (22) is connected to the drain (14) of the reset transistor. Due to the fact that the maximum gate voltage is equal to VDD, additional voltage sources such as charge pumps, for generating voltages higher than VDD are superfluous. Fig. 3.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.