COMPUTER NUMERICALLY CONTROLLED METAL

Brand	Owner	Address	Description
CAP 1000	STRIPPIT, INC.	12975 Clarence Ctr. Rd. Akron NY 140019902	Computer Numerically Controlled Metal and Other Rigid Material Punching Machines;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method and apparatus for maintaining an ideal frequency ratio between numerically-controlled frequency sources provides a mechanism for maintaining coherence between multiple synchronization references where a known ideal rational relationship between the sources is known. Multiple numerically controlled oscillators (NCOs) generate the multiple synchronization references, which may be clock signals or numeric phase representations and the outputs of the NCOs are compared with a ratiometric frequency comparator that determines whether there is an error in the ratio between the NCO outputs. The frequency of one of the NCOs is then adjusted with a frequency correction factor provided by the ratiometric frequency comparator. The NCO inputs can represent ratios of the synchronization reference frequencies to a fixed reference clock and the NCOs clocked by the fixed reference clock.