CN111885322B - Image sensor with distance sensing function and operation method thereof - Google Patents

Image sensor with distance sensing function and operation method thereof Download PDF

Info

Publication number
CN111885322B
CN111885322B CN202010042594.8A CN202010042594A CN111885322B CN 111885322 B CN111885322 B CN 111885322B CN 202010042594 A CN202010042594 A CN 202010042594A CN 111885322 B CN111885322 B CN 111885322B
Authority
CN
China
Prior art keywords
sub
sensing
pixel groups
distance sensing
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010042594.8A
Other languages
Chinese (zh)
Other versions
CN111885322A (en
Inventor
印秉宏
王佳祥
游腾健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Tyrafos Semiconductor Technologies Co Ltd
Original Assignee
Guangzhou Tyrafos Semiconductor Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Tyrafos Semiconductor Technologies Co Ltd filed Critical Guangzhou Tyrafos Semiconductor Technologies Co Ltd
Publication of CN111885322A publication Critical patent/CN111885322A/en
Application granted granted Critical
Publication of CN111885322B publication Critical patent/CN111885322B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70SSIS architectures; Circuits associated therewith
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06Systems determining position data of a target
    • G01S17/08Systems determining position data of a target for measuring distance only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70SSIS architectures; Circuits associated therewith
    • H04N25/71Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
    • H04N25/75Circuitry for providing, modifying or processing image signals from the pixel array

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Optical Communication System (AREA)

Abstract

The invention provides an image sensor with a distance sensing function and an operating method thereof. The image sensor includes a pixel array, a cluster analog-to-digital converter readout circuit, and a row readout circuit. The pixel array includes a plurality of sub-pixel groups arranged in an array. The plurality of subpixel groups are spaced apart from each other by a circuit layout area. The cluster analog-to-digital converter readout circuit is disposed in a circuit layout area of the pixel array. The respective distance sensing pixels of the plurality of sub-pixel groups are used for performing the time-of-flight ranging. The row readout circuitry is disposed adjacent to the pixel array. The image sensing pixels of the sub-pixel groups are used for image sensing.

Description

Image sensor with distance sensing function and operation method thereof
Technical Field
The present invention relates to a sensor, and more particularly, to an image sensor having a distance sensing function and a method for operating the same.
Background
A general image sensor can provide only an image sensing function, and if further sensing of distance (depth) information is required, the image sensor needs a plug-in distance sensor to be implemented. Although Depth cameras (Depth cameras) have been developed, the Depth cameras read out image data and distance data of image sensing pixels and distance sensing pixels Column by means of a Rolling shutter (Rolling shutter) by using a Column readout circuit (Column readout circuit) alone, so that the data readout time is too long to provide a sensitive sensing effect. In view of this, several embodiments of solutions will be presented below.
Disclosure of Invention
The present invention is directed to an image sensor having a distance sensing function and an operating method thereof, which can enable the image sensor to effectively and rapidly perform an image sensing function and a distance measuring function.
According to an embodiment of the present invention, an image sensor with distance sensing function of the present invention includes a pixel array, a cluster analog-to-digital converter readout circuit, and a row readout circuit. The pixel array comprises a plurality of sub-pixel groups arranged in an array. The plurality of sub-pixel groups are spaced apart from each other by a circuit layout area. The readout circuit of the cluster analog-to-digital converter is disposed in the circuit layout area of the pixel array and coupled to the distance sensing pixels of each of the plurality of sub-pixel groups. The distance sensing pixels of each of the plurality of sub-pixel groups are used for time-of-flight ranging. The row readout circuit is disposed adjacent to the pixel array and coupled to the image sensing pixels of the sub-pixel groups. The image sensing pixels of the sub-pixel groups are used for image sensing.
In the image sensor according to an embodiment of the present invention, the plurality of image sensing pixels include red, green, and blue sub-pixels.
In the image sensor according to the embodiment of the invention, the cluster adc readout circuit is configured to perform a global shutter operation to simultaneously convert analog sensing data of respective distance sensing pixels of the plurality of sub-pixel groups of the pixel array and read out a plurality of distance sensing data.
In the image sensor according to an embodiment of the present invention, the row readout circuit is configured to perform a rolling shutter operation to convert, column by column, a plurality of analog image data of the plurality of image sensing pixels respectively of the plurality of sub-pixel groups of the pixel array into a plurality of digital image data, and read out the plurality of digital image data column by column.
In the image sensor according to the embodiment of the invention, the cluster adc readout circuit and the column readout circuit complete readout of a plurality of distance sensing data and a plurality of digital image data during a same frame.
In the image sensor according to an embodiment of the present invention, the cluster analog-to-digital converter readout circuit includes a plurality of analog-to-digital conversion units. At least a part of the distance sensing pixels of the plurality of sub-pixel groups share one analog-to-digital conversion unit.
In the image sensor according to the embodiment of the present invention, the row readout circuit includes a plurality of analog-to-digital conversion units. The plurality of image sensing pixels of each row of the plurality of sub-pixel groups are coupled to an analog-to-digital conversion unit.
In the image sensor according to the embodiment of the invention, the respective distance sensing pixels of the plurality of sub-pixel groups are used for performing the time-of-flight ranging operation according to the indirect time-of-flight ranging method or the direct time-of-flight ranging method.
In the image sensor according to an embodiment of the present invention, the image sensor further includes a light emitting unit. The light emitting unit is used for emitting sensing light to the sensing target, so that the distance sensing pixels of the sub-pixel groups receive reflected light. The readout circuit of the clustered analog-to-digital converter reads out the sensing results of the reflected light of the respective distance sensing pixels of the plurality of sub-pixel groups respectively to output corresponding distance sensing data.
According to an embodiment of the present invention, the operation method of the present invention is suitable for an image sensor having a distance sensing function. The operating method comprises the following steps: performing time-of-flight ranging by using respective distance sensing pixels of a plurality of sub-pixel groups in a pixel array, and reading out a plurality of distance sensing data of the plurality of sub-pixel groups by using a cluster analog-to-digital converter reading circuit; image sensing is performed by a plurality of image sensing pixels for each of the plurality of sub-pixel groups, and a plurality of digital image data of the plurality of sub-pixel groups is read out by a row readout circuit. The cluster analog-to-digital converter readout circuit is disposed in a circuit layout area of the pixel array. The row readout circuitry is disposed adjacent to the pixel array.
Based on the above, the image sensor with distance sensing function and the operating method thereof of the present invention can make the image sensor utilize a part of sensing pixels in the pixel array as distance sensing pixels to provide the distance measuring function. In addition, the image sensor of the present invention additionally sets a readout circuit of a cluster analog-to-digital converter in the circuit layout area of the pixel array to read out the distance sensing data of the distance sensing pixels, and the readout circuit is different from other image sensing pixels. Therefore, the image sensor of the present invention can effectively and rapidly perform the image sensing function and the ranging function.
In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a diagram of an image sensor with distance sensing function according to an embodiment of the present invention;
FIG. 2 is a diagram of a pixel array according to an embodiment of the present invention;
FIG. 3 is a timing diagram of the image sensor for time-of-flight ranging and image sensing according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method of operation of an embodiment of the present invention.
Description of the reference numerals
100: an image sensor;
110. 210: an array of pixels;
111: an image sensing pixel array;
112: a distance sensing pixel array;
113. 220, and (2) a step of: a row readout circuit;
114: a cluster analog-to-digital converter readout circuit;
120: a digital signal processor;
130: a light emitting unit;
211 to 219: a group of sub-pixels;
r: a red sub-pixel;
g: a green sub-pixel;
b: a blue sub-pixel;
z: a distance sensing pixel;
l1, L2, ADC, RO1, RS, INT, RO2: time sequence;
t1, t2, t3: a point in time;
s410 and S420: and (5) carrying out the following steps.
Detailed Description
Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.
Fig. 1 is a schematic diagram of an image sensor with distance sensing function according to an embodiment of the invention. Referring to fig. 1, the image sensor 100 includes a pixel array 110, a row (Column) readout circuit 113, a Digital Signal Processor (DSP) 120, and a light emitting unit 130. The pixel array 110 may be disposed on a substrate and includes an image sensing pixel array 111, a distance sensing pixel array 112, and a Cluster analog-to-digital converter (ADC) readout circuit 114. In the present embodiment, the image sensing pixel array 111 and the distance sensing pixel array 112 form a plurality of sub-pixel groups arranged in an array, and the plurality of sub-pixel groups are spaced from each other by a circuit layout area. In the present embodiment, the readout circuit 114 is disposed in a circuit layout area of the substrate of the pixel array 110 by process integration and layout design, and is different from the externally connected column readout circuit 113.
In the present embodiment, the row readout circuit 113 is disposed adjacent to the pixel array 110 and coupled to a plurality of image sensing pixels of the image sensing pixel array 111, wherein the plurality of image sensing pixels are used for image sensing. Row readout circuitry 113 may include a plurality of analog-to-digital converters. The cluster adc readout circuit 114 is coupled to a plurality of distance sensing pixels of the distance sensing pixel array 112, wherein the plurality of distance sensing pixels are used for distance sensing. In the present embodiment, the row readout circuit 113 and the cluster adc readout circuit 114 are used for reading out the digital image data and the distance sensing data to the dsp 120, respectively.
In the present embodiment, the distance sensing pixels of the distance sensing pixel array 112 may be measured by using a Direct Time-of-Flight (D-ToF) method or an Indirect Time-of-Flight (I-ToF) method, for example, and the invention is not limited thereto. When the image sensor 100 performs ranging, the light emitting unit 130 may emit sensing light to a sensing target so that the plurality of distance sensing pixels of the distance sensing pixel array 112 may receive corresponding reflected light, and the dsp 120 may perform corresponding operations to obtain distance information (or depth information). In addition, the Light Emitting unit 130 may be a Light Emitting Diode (LED) or a Laser Diode (LD), which is not limited in the invention. In one embodiment, the light emitting unit 130 may also be disposed outside the image sensor 100. Therefore, the image sensor 100 of the present embodiment can simultaneously perform the time-of-flight ranging function and the image sensing function.
Fig. 2 is a schematic diagram of a pixel array according to an embodiment of the invention. Referring to fig. 2, the pixel array 210 includes a plurality of sub-pixel groups 211 to 219 arranged in an array, and each of the sub-pixel groups 211 to 219 includes a plurality of sensing pixels (sub-pixels). The sub-pixel groups 211 to 219 are separated from each other by a circuit layout region (hatched region). In the present embodiment, a cluster adc readout circuit (not shown) is disposed in a circuit layout area (diagonal area) of the pixel array 210 and coupled to the respective distance sensing pixels Z of the sub-pixel groups 211-219. The plurality of distance sensing pixels Z of the sub-pixel groups 211 to 219 form a distance sensing pixel array. Each of the distance sensing pixels Z of the sub-pixel sets 211-219 is used for time-of-flight ranging. In the present embodiment, the row readout circuit 220 is disposed adjacent to the pixel array 210 and coupled to the image sensing pixels of the sub-pixel groups 211 to 219. The plurality of image sensing pixels of the sub-pixel groups 211 to 219 form an image sensing pixel array. The image sensing pixels of each of the sub-pixel groups 211 to 219 are used for image sensing. The plurality of image sensing pixels include a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
In this embodiment, the cluster adc readout circuit may include a plurality of adc units, and at least a portion of the distance sensing pixels Z of the sub-pixel groups 211 to 219 share one adc unit. For example, the distance sensing pixels Z of every four sub-pixel groups (e.g., the sub-pixel groups 211 to 214) may share one analog-to-digital conversion unit, but the invention is not limited thereto. In this embodiment, the row readout circuit 220 may include a plurality of analog-to-digital conversion units, and the image sensing pixels in each row of the sub-pixel groups 211 to 219 are coupled to one analog-to-digital conversion unit. In other words, since the distance sensing pixels Z and the image sensing pixels of the sub-pixel groups 211 to 219 of the present embodiment use different readout circuits to read out data, the distance sensing pixels Z and the image sensing pixels can perform distance sensing and image sensing simultaneously. It should be noted that the arrangement and number of the sub-pixel groups 211-219 in fig. 2 are only for exemplary purposes, and the invention is not limited thereto.
FIG. 3 is a timing diagram of performing time-of-flight ranging and image sensing by the image sensor according to an embodiment of the invention. Referring to fig. 1 and 3, in the present embodiment, the cluster adc readout circuit 114 and the column readout circuit 113 complete the readout of a plurality of distance sensing data and a plurality of digital image data during the same frame. Specifically, the time interval from the time point t1 to the time point t3 in fig. 3 is a frame period. With respect to distance sensing, such as timing L1, the light emitting unit 130 emits sensing light to the sensing target at time point t 1. As timing L2, the distance sensing pixel array 112 receives the reflected light from the sensing target at time point t 2. Like a clocked ADC, the cluster ADC readout circuit 114 performs a Global shutter operation to simultaneously convert a plurality of analog sensing data of a plurality of distance sensing pixels of the distance sensing pixel array 112 of the pixel array 110 after a time point t 2. As shown in timing RO1, the burst adc readout circuit 114 sequentially outputs a plurality of distance sensing data (diagonal line segments), and the output of the plurality of distance sensing data is completed before time point t 3.
Regarding image sensing, as the timing RS, the row readout circuit 113 performs a Rolling shutter (Rolling shutter) operation, and the plurality of image sensing pixels of the image sensing pixel array 111 of the pixel array 110 performs a reset operation column by column from the time point t 2. Then, as shown in timing INT, the image sensing pixels of the image sensing pixel array 111 of the pixel array 110 are reset and then exposure operation (image integration operation) is performed column by column. The line readout circuit 113 sequentially outputs a plurality of digital image data (diagonal line segments) as the timing RO2, and the output of the plurality of digital image data is completed before the time point t 3. Accordingly, the cluster adc readout circuit 114 and the column readout circuit 113 of the present embodiment can complete the readout of the plurality of distance sensing data and the plurality of digital image data during the same frame.
In another embodiment, the sensing light emitted by the light emitting unit 130 may be, for example, a wavelength of 940 nanometers (nm), and thus the plurality of distance sensing pixels of the sensing pixel array 112 are for sensing light of a wavelength of 940 nm. However, the plurality of image sensing pixels of the image sensing pixel array 111 are for sensing light of 400 nm and 700 nm in the visible light band. That is, the image sensing pixels of the image sensing pixel array 111 and the distance sensing pixels of the sensing pixel array 112 do not interfere with each other, so in this embodiment, the reset operation of the timing RS can be advanced from the time point t2 to the time point t1, and the exposure operation and the readout operation of the timings INT, RO2 can also be advanced.
FIG. 4 is a flow chart of a method of operation of an embodiment of the present invention. Referring to fig. 1 and fig. 4, the operation method of the present embodiment may be applied to the image sensor 100 of the embodiment of fig. 1. In step S410, the distance sensing pixels (distance sensing pixel array 112) of the sub-pixel groups in the pixel array 110 perform the time-of-flight ranging, and the readout circuits of the cluster adc 114 read out the distance sensing data of the sub-pixel groups. In step S420, a plurality of image sensing pixels (image sensing pixel array 111) of each of the plurality of sub-pixel groups perform image sensing, and a plurality of image sensing data (digital image data) of the plurality of sub-pixel groups are read out by the row readout circuit 113. Therefore, the operation method of the present embodiment enables the image sensor 100 to perform image sensing and ranging simultaneously.
In addition, with respect to other component features, implementation details and technical features of the image sensor 100 of the present embodiment, reference may be made to the contents of the foregoing embodiments of fig. 1 to fig. 3 to obtain sufficient teaching, suggestion and implementation description, so that redundant description is not repeated herein.
In summary, the image sensor with distance sensing function and the operating method thereof of the present invention can use a part of the sensing pixels in the pixel array as the distance sensing pixels, so that the pixel array can provide the image sensing function and the distance measuring function. In addition, the image sensor of the present invention may be configured with a cluster adc readout circuit in the circuit layout area of the pixel array to read out the distance sensing data of the distance sensing pixels. Therefore, the image sensor of the present invention can achieve the effect of simultaneously performing the image sensing function and the ranging function because the digital image data of the image sensing pixels are separately performed by the row readout circuit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (16)

1. An image sensor having a distance sensing function, comprising:
a pixel array including a plurality of sub-pixel groups arranged in an array and spaced apart from each other by a circuit layout area;
a cluster ADC readout circuit disposed in the circuit layout area of the pixel array and coupled to respective distance sensing pixels of the plurality of sub-pixel groups for performing time-of-flight ranging; and
a row readout circuit disposed adjacent to the pixel array and coupled to a plurality of image sensing pixels of each of the plurality of sub-pixel groups for image sensing,
the cluster analog-to-digital converter reading circuit and the column reading circuit finish reading a plurality of distance sensing data and a plurality of digital image data in the same frame period.
2. The image sensor of claim 1, wherein the plurality of image sensing pixels comprise red, green, and blue sub-pixels.
3. The image sensor of claim 1, wherein the cluster ADC readout circuit is configured to perform a global shutter operation to simultaneously convert analog sensing data of the distance sensing pixels of each of the plurality of sub-pixel groups of the pixel array and read out a plurality of distance sensing data.
4. The image sensor of claim 1, wherein the row readout circuitry is configured to perform a rolling shutter operation to convert column-by-column analog image data of the image sensing pixels of the respective subpixel groups of the pixel array into digital image data and readout the digital image data column-by-column.
5. The image sensor of claim 1, wherein the cluster adc readout circuit comprises a plurality of adc units, and at least a portion of the distance-sensing pixels of the plurality of sub-pixel groups share one adc unit.
6. The image sensor of claim 1, wherein the row readout circuitry comprises a plurality of analog-to-digital conversion units, and wherein the plurality of image sensing pixels of each row of the plurality of subpixel groups is coupled to one analog-to-digital conversion unit.
7. The image sensor as in claim 1, wherein the distance sensing pixels of each of the plurality of sub-pixel groups are configured to perform a time-of-flight ranging operation according to an indirect time-of-flight ranging method or a direct time-of-flight ranging method.
8. The image sensor of claim 1, further comprising:
a light emitting unit for emitting sensing light to a sensing target so that the distance sensing pixels of the sub-pixel groups receive reflected light,
wherein the readout circuit of the clustered analog-to-digital converter respectively reads out the sensing results of the reflected light of the distance sensing pixels of each of the plurality of sub-pixel groups to output corresponding distance sensing data.
9. An operating method adapted to an image sensor having a distance sensing function, the operating method comprising:
performing time-of-flight ranging by using respective distance sensing pixels of a plurality of sub-pixel groups in a pixel array, and reading out a plurality of distance sensing data of the plurality of sub-pixel groups by using a cluster analog-to-digital converter reading circuit;
performing image sensing by a plurality of image sensing pixels of the respective sub-pixel groups, and reading out a plurality of digital image data of the sub-pixel groups by a row readout circuit,
wherein the cluster analog-to-digital converter readout circuit is disposed in a circuit layout area of the pixel array and the row readout circuit is disposed adjacent to the pixel array,
wherein the cluster ADC readout circuit and the column readout circuit complete readout of the distance sensing data and the digital image data during a same frame.
10. The method of claim 9, wherein the plurality of image sensing pixels comprise red, green, and blue sub-pixels.
11. The operating method according to claim 9, wherein the cluster adc readout circuit is configured to perform a global shutter operation to simultaneously convert analog sensing data of the distance sensing pixels of each of the plurality of sub-pixel groups of the pixel array and read out the plurality of distance sensing data.
12. The operating method of claim 9, wherein the row readout circuit is configured to perform a rolling shutter operation to convert column-by-column analog image data of the image sensing pixels of the respective sub-pixel groups of the pixel array into the digital image data and readout the digital image data column-by-column.
13. The operating method of claim 9, wherein the cluster adc readout circuit comprises a plurality of adc units, and at least a portion of the distance-sensing pixels of the plurality of sub-pixel groups share one adc unit.
14. The operating method of claim 9, wherein the row readout circuit comprises a plurality of analog-to-digital conversion units, and the plurality of image sensing pixels of each row of the plurality of sub-pixel groups are coupled to one analog-to-digital conversion unit.
15. The method of claim 9, wherein the distance sensing pixel of each of the plurality of sub-pixel groups is configured to perform a time-of-flight ranging operation according to an indirect time-of-flight ranging method or a direct time-of-flight ranging method.
16. The operating method according to claim 9, wherein the step of reading out the plurality of distance sensing data of the plurality of sub-pixel groups by the cluster analog-to-digital converter readout circuit comprises:
emitting sensing light to a sensing target through a light emitting unit so that the distance sensing pixels of the sub-pixel groups receive reflected light; and
reading out the sensing result of the reflected light of the distance sensing pixel of each of the plurality of sub-pixel groups by the cluster analog-to-digital converter reading circuit respectively to output corresponding distance sensing data.
CN202010042594.8A 2019-05-02 2020-01-15 Image sensor with distance sensing function and operation method thereof Active CN111885322B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962842448P 2019-05-02 2019-05-02
US62/842,448 2019-05-02

Publications (2)

Publication Number Publication Date
CN111885322A CN111885322A (en) 2020-11-03
CN111885322B true CN111885322B (en) 2022-11-22

Family

ID=73154264

Family Applications (3)

Application Number Title Priority Date Filing Date
CN202010041733.5A Pending CN111965655A (en) 2019-05-02 2020-01-15 Multimedia system applying time-of-flight ranging and operation method thereof
CN202010042594.8A Active CN111885322B (en) 2019-05-02 2020-01-15 Image sensor with distance sensing function and operation method thereof
CN202010080659.8A Withdrawn CN111965656A (en) 2019-05-02 2020-02-05 Time-of-flight ranging module, operating method thereof and multimedia system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN202010041733.5A Pending CN111965655A (en) 2019-05-02 2020-01-15 Multimedia system applying time-of-flight ranging and operation method thereof

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202010080659.8A Withdrawn CN111965656A (en) 2019-05-02 2020-02-05 Time-of-flight ranging module, operating method thereof and multimedia system

Country Status (2)

Country Link
CN (3) CN111965655A (en)
TW (3) TWI732424B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11637977B2 (en) * 2020-07-15 2023-04-25 Corephotonics Ltd. Image sensors and sensing methods to obtain time-of-flight and phase detection information

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4200328B2 (en) * 2005-04-18 2008-12-24 パナソニック電工株式会社 Spatial information detection system
US7944548B2 (en) * 2006-03-07 2011-05-17 Leica Geosystems Ag Increasing measurement rate in time of flight measurement apparatuses
US8593331B2 (en) * 2010-06-16 2013-11-26 Qualcomm Incorported RF ranging-assisted local motion sensing
US8542348B2 (en) * 2010-11-03 2013-09-24 Rockwell Automation Technologies, Inc. Color sensor insensitive to distance variations
EP2703836B1 (en) * 2012-08-30 2015-06-24 Softkinetic Sensors N.V. TOF illuminating system and TOF camera and method for operating, with control means for driving electronic devices located in the scene
EP2959309B1 (en) * 2013-02-19 2019-05-15 Intel IP Corporation Improved wireless network location techniques
WO2014177750A1 (en) * 2013-04-29 2014-11-06 Nokia Corporation A method and apparatus for fusing distance data from a distance sensing camera with an image
US10291329B2 (en) * 2013-12-20 2019-05-14 Infineon Technologies Ag Exchanging information between time-of-flight ranging devices
JP2016012904A (en) * 2014-06-02 2016-01-21 ソニー株式会社 Imaging element, imaging method, and electronic equipment
EP2955544B1 (en) * 2014-06-11 2020-06-17 Sony Depthsensing Solutions N.V. A TOF camera system and a method for measuring a distance with the system
US9502457B2 (en) * 2015-01-29 2016-11-22 Semiconductor Components Industries, Llc Global shutter image sensor pixels having centralized charge storage regions
WO2016144741A1 (en) * 2015-03-06 2016-09-15 Illinois Tool Works Inc. Sensor assisted head mounted displays for welding
US9606238B2 (en) * 2015-03-06 2017-03-28 Gatekeeper Systems, Inc. Low-energy consumption location of movable objects
US9749556B2 (en) * 2015-03-24 2017-08-29 Semiconductor Components Industries, Llc Imaging systems having image sensor pixel arrays with phase detection capabilities
JPWO2016151982A1 (en) * 2015-03-26 2018-01-25 パナソニックIpマネジメント株式会社 Solid-state imaging device and imaging apparatus equipped with the same
DE102016122831A1 (en) * 2015-11-26 2017-06-01 Odos Imaging Ltd. An imaging system, a distance measuring device, a method of operating the imaging system, and the distance measuring device
US10075640B2 (en) * 2015-12-31 2018-09-11 Sony Corporation Motion compensation for image sensor with a block based analog-to-digital converter
CN105866783A (en) * 2016-04-15 2016-08-17 中国科学院上海技术物理研究所 Laser ranging method and laser ranging device utilizing semi-continuous square wave modulation and flight time measurement
CN106911381A (en) * 2017-01-20 2017-06-30 西南电子技术研究所(中国电子科技集团公司第十研究所) Laser link communication measurement hybrid system
CN107167792A (en) * 2017-06-09 2017-09-15 中国电子科技集团公司第三十四研究所 A kind of Type of Atmospheric Laser Communication and its distance-finding method with distance measurement function
GB201713092D0 (en) * 2017-08-15 2017-09-27 Purelifi Ltd Optical wireless communication device
CN108415025A (en) * 2018-05-10 2018-08-17 成都九壹通智能科技股份有限公司 The system for carrying out two-way flight time ranging and communication based on wireless pulses radiofrequency signal
CN108646214A (en) * 2018-05-10 2018-10-12 成都九壹通智能科技股份有限公司 Range-measurement system based on customed ranging protocol
CN109032179A (en) * 2018-08-08 2018-12-18 西安电子科技大学 Unmanned plane flying control equipment based on laser intensity detection

Also Published As

Publication number Publication date
TW202041884A (en) 2020-11-16
CN111965656A (en) 2020-11-20
TWI745852B (en) 2021-11-11
CN111965655A (en) 2020-11-20
TWI723743B (en) 2021-04-01
TW202101968A (en) 2021-01-01
TWI732424B (en) 2021-07-01
TW202041881A (en) 2020-11-16
CN111885322A (en) 2020-11-03

Similar Documents

Publication Publication Date Title
TWI412272B (en) Solid-state imaging element and camera system
US8045029B2 (en) CMOS image sensor for high speed signal processing
US20110205384A1 (en) Variable active image area image sensor
US7940317B2 (en) Image sensor having a pixel array with serial readout
KR20170118197A (en) IMAGING METHOD, IMAGING DEVICE, AND ELECTRONIC DEVICE
WO2018101049A1 (en) Solid-state image capture device and ranging image capture device
US9191636B2 (en) Solid-state imaging device having varying pixel exposure times
CN111916468A (en) Image sensor with a plurality of pixels
JP6953297B2 (en) Imaging device and imaging system
JP2019140537A (en) Solid state imaging element, imaging apparatus, and imaging method
US11070757B2 (en) Image sensor with distance sensing function and operating method thereof
CN111885322B (en) Image sensor with distance sensing function and operation method thereof
CN101160955A (en) Generation and storage of column offsets for an image sensor
JP6485675B1 (en) Solid-state imaging device and imaging device including the same
US20210044783A1 (en) Image sensor, image sensor processor, and image processing system including the same
TW202348012A (en) Image sensing device
US11172091B2 (en) Photoelectric conversion device, line sensor, image reading device and image forming apparatus
US9838591B2 (en) Imaging apparatus and imaging system for generating a signal for focus detection
US20140368710A1 (en) Pixel signal processing apparatus and cmos image sensor using the same
JP2010178033A (en) Imaging device and image sensor chip
JP2006217274A (en) Solid-state imaging device
JP2010081259A (en) Solid-state imaging device
JP2015192341A (en) imaging system
US20240251184A1 (en) Image sensor and method of operating the image sensor
US12008789B2 (en) Image sensing device and method of operating the same

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant