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Blackmer reasoned that the log-antilog detector may be simplified by taking up processing to log domain, omitting physical squaring of input signals and thus retaining its full dynamic range. [3] Squaring and taking square roots in log domain is very cheap, being simple scaling by a factor of 2 or 1/2. [7]
The Blackmer cell is a direct descendant of a two-transistor log-antilog circuit, itself a derivative of the simple current mirror.Normally, the bases of two transistors of a mirror are tied together to ensure the collector current I 2 of the output transistor T2 exactly mirrors the collector current I 1 of the input transistor T1.
a sine table (16-bit, 2049 entries representing first quadrant, angles from 0 to π/2; other three quadrants are created from the same table). The math extensions are intended to help compensate for the lack of a floating-point unit , and more primitive missing operations, such as multiplication and division (this is masked in Spin but is a ...
contrast ratio = antilog ( D max. — D min.) If this is applied to the well-known B.B.C. Test Card 'C', we find that, in the positive film version of the card, the maximum density is 2.0 whilst the minimum density is 0.3. Therefore the contrast ratio is as follows: contrast ratio = antilog (2.0 — 0.3) = antilog (1.7)
Click Download AOL Desktop Gold or Update Now. 4. Navigate to your Downloads folder and click Save. 5. Follow the installation steps listed below. Install Desktop Gold.
Pressure is building on Amazon.com to come to the bargaining table with the Teamsters union as thousands of workers threaten to strike during the retailer’s busy holiday selling season. Workers ...
While most people know that a baby dog is called a puppy, many may not know what a baby elephant is called. In this fun infographic, explore the world of baby animals. Find out what they’re ...