METHOD AND DEVICE FOR TRANSFORMING SONIC SIGNALS TO IMAGE Russian patent published in 1994 - IPC

FIELD: automatics; computer technology. SUBSTANCE: device has conic stencils. Any ring on the surface of the stencils is formed by lateral stripes; optical density of the stripes changes to follow sinusoid. Frequencies of sinusoids of adjacent rings differ two times as great. All the stencils are disposed right up one to the another along the circle. Any stencil rotates about its own axis in such a manner, that frequencies of sinusoids of unambiguous rings of adjacent stencils change proportional to 2^ϕ, where ϕ is angular coordinate relatively axis of light flux, expressed as fractions of circle length. Light flux is intensity-modulated by transformed sonic signal. EFFECT: widened area of application; simplification. 2 cl, 4 cl, 5 dwg