Electronic circuit having display driving function, touch sensing function and fingerprint sensing function
US-11270095-B2 · Mar 8, 2022 · US
Image acquiring apparatus and display apparatus equipped therewith
US11495045B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11495045-B2 |
| Application number | US-202016914991-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 29, 2020 |
| Priority date | Dec 28, 2017 |
| Publication date | Nov 8, 2022 |
| Grant date | Nov 8, 2022 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An image acquiring apparatus includes: a light irradiation unit configured to be capable of radiating light modulated with a modulation signal in a predetermined frequency band; photosensors configured to be capable of receiving the light radiated from the light irradiation unit, the light including reflected light reflected by an object, and the photosensors being arranged in a matrix; and a generation unit configured to generate a DC component from an electrical signal output from the photosensor due to the light received by the photosensor on the basis of the predetermined frequency band or the modulation signal.
First claim
Opening claim text (preview).
What is claimed is: 1. An image acquiring apparatus comprising: a light irradiation unit configured to be capable of radiating light modulated with a modulation signal in a predetermined frequency band; photosensors configured to be capable of receiving the light radiated from the light irradiation unit, the light including reflected light reflected by an object, and the photosensors being arranged in a matrix; and a generation unit configured to generate a DC component from an electrical signal output from the photosensor due to the light received by the photosensor on the basis of the predetermined frequency band or the modulation signal, wherein the generation unit includes a band pass filter configured to cut off a DC component caused by external light in the electrical signal; and a low pass filter configured to pass the DC component from a signal obtained by multiplying the electrical signal that has passed through the band pass filter by the modulation signal synchronized with the electrical signal, with a frequency lower than the predetermined frequency band being a cutoff frequency. 2. The image acquiring apparatus according to claim 1 , wherein the light irradiation unit includes a light source; a brightness instruction value generation unit configured to generate a brightness instruction value for the light source; and a modulation signal generation unit configured to generate a modulation signal for modulating the brightness instruction value with the predetermined frequency band. 3. The image acquiring apparatus according to claim 1 , wherein the generation unit includes a band pass filter in which the predetermined frequency band is included in a pass band of the electrical signal; and a low pass filter configured to pass the DC component from a signal based on the electrical signal that has passed through the band pass filter, with a frequency lower than the predetermined frequency band being a cutoff frequency. 4. The image acquiring apparatus according to claim 1 , wherein the generation unit includes a low pass filter configured to pass the DC component from a signal obtained by multiplying the electrical signal output from the photosensor by the modulation signal synchronized with the electrical signal, with a frequency lower than the predetermined frequency band being a cutoff frequency. 5. A display apparatus comprising the image acquiring apparatus according to claim 1 .
Assignees
Inventors
Classifications
- G06V40/1318Primary
using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title
Combination of two or more compensation controls · CPC title
Details of sensors, e.g. sensor lenses (fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19) · CPC title
Control of illumination · CPC title
Electricity · mapped topic
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Frequently asked questions
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- What does patent US11495045B2 cover?
- An image acquiring apparatus includes: a light irradiation unit configured to be capable of radiating light modulated with a modulation signal in a predetermined frequency band; photosensors configured to be capable of receiving the light radiated from the light irradiation unit, the light including reflected light reflected by an object, and the photosensors being arranged in a matrix; and a g…
- Who is the assignee on this patent?
- Connectec Japan Corp, Fujikin Kk
- What technology area does this patent fall under?
- Primary CPC classification G06V40/1318. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Nov 08 2022 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).