Method, device and program for displaying echo image
AssigneeFuruno Electric Co., Ltd.
InventorsSatoshi Matsumoto, Kazuya Nakagawa
Life of this patent
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Abstract
This disclosure provides an echo image display device, which includes an antenna for discharging electromagnetic waves and receiving echo signals reflected on one or more target objects, an echo signal input unit for inputting the echo signals from the antenna, an echo signal level detector for detecting a level of each of the echo signals with reference to a distance and an azimuth from the antenna, an image data generating module for generating image data based on the levels of the echo signals, a display unit for displaying the image data, and a data amount changing module for changing a data amount rate of a predetermined area that is set as a part of a display area of the display unit, into a different rate in another part of the display area.
Claims11
An echo image display device, comprising:
- an antenna for discharging electromagnetic waves and receiving echo signals reflected on one or more target objects;
- an echo signal input unit for inputting the echo signals from the antenna;
- an echo signal level detector for detecting a level of each of the echo signals with reference to a distance and an azimuth from the antenna;
- an image data generating module for generating image data based on the levels of the echo signals;
- a display unit for displaying the image data;
- and
- a data amount changing module for
- changing a data amount rate of a predetermined area that is set as a first part of a display area of the display unit, into a different rate in a second part of the display area, without increasing an amount of data in other parts of the display area, and
- changing a number of detections of the echo signal level detector within the predetermined area by increasing the number of detections along the azimuth direction or the distance direction without changing a number of echo signal level detections in other parts of the display area.
An echo image display device, comprising:
- an antenna for discharging electromagnetic waves and receiving echo signals reflected on one or more target objects;
- an echo signal input unit for inputting the echo signals from the antenna;
- an echo signal level detector for detecting a level of each of the echo signals with reference to a distance and an azimuth from the antenna;
- an image data generating module for generating image data based on the levels of the echo signals;
- a display unit for displaying the image data;
- a data amount changing module for changing a data amount rate of a predetermined area that is set as a first part of a display area of the display unit, into a different rate in a second part of the display area;
- an image memory for temporarily storing image data after the change of the data amount rate of the predetermined area and image data before the change of the data amount rate of the predetermined area;
- and
- a correlation processor for performing first correlation processing to find a correlation between a plurality of scans of the stored image data after the change of the data amount rate, the image data being used as past echo signal scans, one scan being made of echo signals in a plurality of azimuths, and update the image data after the change of the data amount rate, the correlation processor further performing second correlation processing to find a correlation between a plurality of scans of the stored image data before the change of the data amount rate, the image data being used as past echo signal scans, one scan being made of echo signals in a plurality of azimuths, and update the image data before the change of the data amount rate.
A method of displaying an echo image, comprising:
- discharging electromagnetic waves from an antenna and receiving echo signals reflected on one or more target objects;
- inputting the echo signals from the antenna;
- detecting a level of each of the echo signals with reference to a distance and an azimuth from the antenna;
- generating image data based on the levels of the echo signals;
- displaying the image data on a display unit;
- changing a data amount rate of a predetermined area that is set as a first part of a display area of the display unit, into a different rate in a second part of the display area, without increasing an amount of data in other parts of the display area;
- and
- changing a number of echo signal level detections within the predetermined area by increasing the number of detections along the azimuth direction or the distance direction without changing a number of echo signal level detections in other parts of the display area.
Dependencies are inferred from the claim text.