Boots – shoes – and leggings
Patent
1985-11-21
1988-01-05
Gruber, Felix D.
Boots, shoes, and leggings
358 10, 358139, 364579, G06F 1520, H04N 1700
Patent
active
047180188
ABSTRACT:
A digital test system for generating a test signal in the form of an amplitude and/or phase modulated sinusoidal signal at a given carrier frequency is disclosed. Arbitrary amplitude and phase modulation functions may be selected and are provided to the system in the form of digitally encoded data streams. The system does not require a digital multiplier. A signal in the form of an unmodulated carrier signal may also be generated.
REFERENCES:
patent: 4204228 (1980-05-01), Mason et al.
patent: 4322749 (1982-03-01), Weston
patent: 4534059 (1985-08-01), Yamada
patent: 4635096 (1987-01-01), Morgan
Wittman et al., IEEE Transactions on Acoustics, Speech, and Signal Processing, "A Hardward Multitone Digital Frequency Synthesizer", vol. ASSP-27, No. 6, Dec. 1979, pp. 804-809.
Chan Kai Y.
Sloane Edwin A.
Yau David D.
Fairchild Semiconductor Corporation
Gruber Felix D.
Krueger Charles E.
Mattson Brian M.
Park Theodore S.
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