| 摘要 |
<p>A B-scan ultrasonoscope which can be used for scanning tissue, for example, the human eye, and displays the shape and character of the tissue. Echo pulses from a scanning head (10) are convened into digital signals by comparator (20) and encoder (30), whose amplitudes represent the reflectivity of the tissue. The digital signals are then displayed on a color display in accordance with a desired color scale, with individual digital increments respectively representing preselected colors, through use of a decoder (38) and red and green and blue guns (46, 48 and 50). Alternate increments are maintained as black, whereby the active colors are interleaved with bands of black, by connecting alternate conductors (72, 74) to the zero or blanking input of color guns (66, 68 and 70). In this manner, tissue interfaces are more easily seen and visual acuity is improved. </p> |
