Radar device and similar device

• US 20060145914A1
• Filed: 05/24/2004
• Published: 07/06/2006
• Est. Priority Date: 06/02/2003
• Status: Active Grant

• Current Assignee: Furuno Electric Co, Ltd
• Original Assignee: Furuno Electric Co, Ltd
• Inventors: Takemoto (Shibata), Sae, Fujikawa, Takumi, Yamashita, Takehiro
• Granted Patent: US 7,504,994 B2
• Time in Patent Office: Days
• US Class Current: 342/185
• CPC Class Codes: G01S 7/064 using a display memory for image processing G01S7/298 takes precedence

Abstract

There is configured a radar or similar device that outputs received data that is currently being received and scan correlated image data in parallel with each other. Scan correlated image data and display image data resulting from received data from a display video memory 13 are input into a transitional data generator 11, and the transitional data generator 11 generates transitional data that represents an intermediate value and gradually changes from the received data into the scan correlated image data, using these signals, and inputs the transitional data into a selector 12. The received data, a FIRST or a LAST signal, and the transitional data are input into the selector 12, and the selector 12 outputs the received data if FIRST=1, and outputs the transitional data if FIRST=0, to the display video memory 13. This image data is fed back to the transitional data generator 11, and therefore it gradually changes from the received data into the scan correlated image data.

Claims

1. A radar or similar device comprising:

a scan correlation processing section for performing correlation processing between pixel data of current received data obtained by sweep rotation and stored previous data of the pixel data and generating scan correlated data; and

a transitional image data generating section into which the received data and the scan correlated data are input, and which outputs the received data as image data at a predetermined timing in one sweep rotation, generates transitional data that represents an intermediate value between the received data and the scan correlated data, based on the received data and the scan correlated data, and outputs the transitional data as image data, at a time period other than the predetermined timing.

4. The radar or similar device according to any one of claims 1 to 3, whererin the transitional image data generation section comprises an adder-subtracter or a multiplier, and addition/subtraction is used for calculation for generating the transitional data.

5. The radar or similar device according to any one of claims 1 to 4, wherein the transitional image data generation section concurrently generates a plurality of sets of the transitional data.

2. A radar or similar device comprising:

two scan correlation processing sections for performing correlation processing between pixel data of current received data obtained by sweep rotation and stored previous data of the pixel data and generating scan correlated data; and

a transitional image data generating section into which first scan correlated data generated by a first one of the scan correlation processing sections and second scan correlated data generated by a second one of the scan correlation processing sections are input, and which outputs the second scan correlated data as image data at a predetermined timing in one sweep rotation, generates transitional data that represents an intermediate value between the first and the second scan correlated data, based on the first and the second scan correlated data, and outputs the transitional data as image data, at a time period other than the predetermined timing.

3. The radar or similar device according to claim 2, wherein the first scan correlation processing section outputs the received data without performing scan correlation processing.