Frequency Modulated Image Reconstruction
US-2022164924-A1 · May 26, 2022 · US
Distance measurement device, distance measurement method, and radar device
US12596174B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12596174-B2 |
| Application number | US-202218083934-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 19, 2022 |
| Priority date | Aug 5, 2020 |
| Publication date | Apr 7, 2026 |
| Grant date | Apr 7, 2026 |
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Abstract
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A distance measurement device includes: a signal division unit to divide a digital signal into N digital signals (N is an integer equal to or greater than 2), the digital signal showing interference light between reflected light which is received from a distance measurement target, and reference light; a frequency shift unit to shift a frequency of each of the N digital signals after distribution; a Fourier transform unit to perform a Fourier transform on each of the N digital signals after frequency shift; and a distance calculation unit to determine a frequency component related to the distance measurement target, to determine a shift amount related to a signal after the Fourier transform which includes the determined frequency component, and to calculate the distance from the distance measurement device to the distance measurement target from the sum of the frequency of the determined frequency component and the determined shift amount.
First claim
Opening claim text (preview).
What is claimed is: 1 . A distance measurement device comprising: processing circuitry to divide a digital signal into N digital signals (N is an integer equal to or greater than 2), the digital signal showing interference light between reflected light which is received from a distance measurement target by applying part of frequency swept light whose frequency varies with time to the distance measurement target, and reference light which is the remaining part of the frequency…
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Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
- G01S7/356Primary
Physics · mapped topic
Physics · mapped topic
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- What does patent US12596174B2 cover?
- A distance measurement device includes: a signal division unit to divide a digital signal into N digital signals (N is an integer equal to or greater than 2), the digital signal showing interference light between reflected light which is received from a distance measurement target, and reference light; a frequency shift unit to shift a frequency of each of the N digital signals after distributi…
- Who is the assignee on this patent?
- Mitsubishi Electric Corp
- What technology area does this patent fall under?
- Primary CPC classification G01S7/356. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 07 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).