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.
For self-testing of VLSI multichip modules, it can be desirable to have one self-test shift register hardware design which could be used for testing many different modules.
English (United States)
This text was extracted from a PDF file.
100% of the total text.
Page 1 of 1
Variable Length Feedback Shift Register
For self-testing of VLSI multichip modules, it can be desirable to have one
self-test shift register hardware design which could be used for testing many
The shift register in the figure can have a length of 3, 4 or 5, which is
controlled by the length select register. When the control for stage 4 is a 0, the
fourth and fifth stages are not used and the shift register length is 3. By setting a
1 for the control for stage 4 and a 0 for stage 5, the shift register length is
increased to 4. A five stage shift register is possible if both the controls for stage
4 and 5 are set to a 1.
By using this design along with a feedback selection technique, a variable
number of shift register lengths and feedback configurations is possible.