Patent ID: 8553500
Filing Date: 2013-10-08
Classification: G01S

Abstract:
1. A flasher type fish sonar comprises: a timing form portion for outputting timing signals, a transmitting portion for outputting transmitting signals in accordance with the timing signals from the timing form portion, an ultrasonic transducer for emitting ultrasonic waves in the sea in accordance with the transmitting signals from the transmitting portion, a receiving portion for amplifying reflected signals from the ultrasonic transducer, an A/D converter for converting the amplified reflected signals from the receiving portion to digital signals, a first buffer memory for storing once reflected signals from the A/D converter, a sea bottom detecting portion for detecting the sea bottom by the reflected signals from the first buffer memory, a display data forming portion for converting to display data the reflected signals from the sea bottom detecting portion, a second buffer memory for storing the display signals from the display data forming portion, a display letter data memory for inputting display letter data to the display data forming portion, a display signal transmitting portion for transmitting the reflected signals from the first buffer memory and the display signals from the second buffer memory, a fish sonar displaying portion mounted near an edge of a rotary disk rotated by a motor, and a letter display portion including a plurality of light emitting diodes mounted near a center of the rotary disk, wherein fish sonar are displayed by the fish sonar displaying portion, and the letter data are displayed by the letter display portion.