The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
A timing generator is provided in complementary metal oxide semiconductor (CMOS) technology that has reduced sensitivity to noise and threshold voltage variations.
English (United States)
This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately
92% of the total text.
Page 1 of 2
CMOS Timing Generator
A timing generator is provided in complementary metal oxide semiconductor
(CMOS) technology that has reduced sensitivity to noise and threshold voltage
The circuit of the timing generator illustrated in the figure includes N channel
transistors T1, T2 and T3 and P channel transistors T4, T5 and T6, and nodes A
and B wherein node A is connected to capacitor C1 which has a capacitance
substantially greater than the capacitance at node B. A voltage +V having a
magnitude somewhat smaller than that of power supply voltage +VH is
connected to the control electrode of transistor T2.
The operation of the circuit causes a positive-going input
signal to be delayed. When the voltage at the input is down, nodes A
and B are at a high voltage and the voltage at the output is low.
When the input voltage is up, transistor T1 turns on to discharge
node A and P channel transistors T4 and T5 turn off, resulting in a
negative-going ramp voltage at node A, with transistor T2 remaining
in an off condition until the voltage at node A is reduced to a
threshold voltage below voltage +V. To eliminate sensitivity to the
threshold voltage of transistor T2, the voltage +V is referenced to
the threshold voltage of an adjacent transistor. After transistor T2
turns on, node B has a rapid negative transition due to the ratio of
the capacitances at nodes A and B, resulting in a sharp increase in
voltage at the output.