Optical charging system with integrated sensor and power receiver
First Claim
1. An electronic device, comprising:
- a charge storage device;
an optical sensor, comprising an LED and a photodiode, wherein;
the LED is configured to emit light in a first optical communication path with the photodiode in connection with a photometric measurement indicative of a physiological parameter of a user wearing the electronic device;
the photodiode is configured to generate a first electrical signal in response to the light emitted by the LED in the first optical communication path, the first electrical signal associated with the physiological parameter of the user; and
the photodiode is further configured to generate a second electrical signal at least in part including energy converted from light received from an optical charger via a second optical communication path; and
a power management circuit configured to receive the second electrical signal and charge the charge storage device at least in part using energy from the second electrical signal.
3 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the disclosure can provide an optical charging system with an integrated sensor and power receiver. An electronic device (e.g., a wearable) can include an optical sensor for performing photometric measurements. A photodiode of the sensor can be shared and used for generating an electrical signal when exposed to a light source (e.g., LED) of a light power transmitter. The electrical signal can be conditioned by a power management circuit and can be used to charge a device battery. The light power transmitter can include a photodiode, which can be used for establishing a connection with the device using an optical signal emitted by a light source of the optical sensor. The light power transmitter can be power by, e.g., a USB connection. The intensity of the power transmitter light source can be regulated via a feedback signal from the device, based on the battery charging status.
5 Citations
20 Claims
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1. An electronic device, comprising:
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a charge storage device; an optical sensor, comprising an LED and a photodiode, wherein; the LED is configured to emit light in a first optical communication path with the photodiode in connection with a photometric measurement indicative of a physiological parameter of a user wearing the electronic device; the photodiode is configured to generate a first electrical signal in response to the light emitted by the LED in the first optical communication path, the first electrical signal associated with the physiological parameter of the user; and the photodiode is further configured to generate a second electrical signal at least in part including energy converted from light received from an optical charger via a second optical communication path; and a power management circuit configured to receive the second electrical signal and charge the charge storage device at least in part using energy from the second electrical signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An electronic device including a power management circuit configured to generate a charging signal for a charge storage device, the electronic device comprising:
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an LED; and a photodiode coupled to the LED via a first optical communication path to form an optical sensor, wherein; the LED is configured to emit light in the first optical communication path with the photodiode in connection with a photometric measurement indicative of a physiological parameter of a user wearing the electronic device; the photodiode is configured to generate a first electrical signal in response to the light emitted by the LED in the first optical communication path, the first electrical signal associated with the physiological parameter of the user; and the photodiode is further configured to generate a second electrical signal at least in part including energy converted from light received from an optical charger via a second optical communication path, the second electrical signal comprising the charging signal. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An electronic device comprising:
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means for emitting light in a first optical communication path in connection with a photometric measurement indicative of a physiological parameter of a user wearing the electronic device; means for generating a first electrical signal in response to the light emitted in the first optical communication path, the first electrical signal associated with the physiological parameter of the user; means for generating a second electrical signal at least in part including energy converted from light received from an optical charger via a second optical communication path; and means for charging a charge storage device at least in part using energy from the second electrical signal. - View Dependent Claims (20)
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Specification