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US 2024/0192327 A1Published application
Device for distance measurement
AssigneeSK hynix Inc.
InventorsSun Young LEE, Jeong Eun SONG
Life of this patent
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Abstract
An image sensor includes at least two pixels and a control circuit. The control circuit is configured to provide a first modulation voltage and a second modulation voltage having a phase difference of 180 degrees from each other to each of the at least two pixels in a first mode. The control circuit is also configured to provide the first modulation voltage to a first pixel among the at least two pixels and provide the second modulation voltage to a second pixel among the at least two pixels in a second mode.
Claims15
An image sensor comprising:
- at least two pixels;
- and
- a control circuit configured to:
- provide a first modulation voltage and a second modulation voltage having a phase difference of 180 degrees from each other to each of the at least two pixels in a first mode;
- and
- provide the first modulation voltage to a first pixel among the at least two pixels and provide the second modulation voltage to a second pixel among the at least two pixels in a second mode.
3 more elements
A distance measuring method comprising:
- outputting modulated light corresponding to a first phase through a light source;
- generating a photo charge from reflected light in which the modulated light is reflected by an external object, through at least two pixels;
- providing a first modulation voltage corresponding to the first phase and a second modulation voltage having a phase difference of 180 degrees from the first modulation voltage to each of the at least two pixels in a first mode, or providing the first modulation voltage to a first pixel among the at least two pixels and providing the second modulation voltage to a second pixel among the at least two pixels in a second mode, according to a mode;
- and
- determining a distance to the external object using the photo charge captured by the first modulation voltage and the second modulation voltage.
2 more elements
Dependencies are inferred from the claim text.