Oura Health Oy

Petteri Järvelä

Tero Vallius

Markku Olavi Koskela

Sami Pelkonen

Markku Kallunki

Timo Voutilainen

The invention relates to a system for indicating information representing battery status of an electronic device. The system comprises a charging unit and an electronic device. The charging unit comprises charging means, wireless communication means, and indication means. The electronic device comprises a rechargeable battery, charging means, and wireless communication means. During the wireless charging of the electronic device, the electronic device is configured to detect information representing the battery status of said electronic device and to communicate the detected information representing the battery status to the charging unit, and the charging unit is configured to receive the information from the electronic device and to indicate at least part of the received information representing the battery status of the electronic device. The invention relates also to a method for indicating information representing battery status of an electronic device.

System and a method for indicating information representing battery status of an electronic device

The present invention introduces an arrangement for enhancing the performance of an electronic circuit comprising a phototransistor (Q). Either a common-collector or a common-emitter connected phototransistor (Q) has a main resistor (R), and at least one external bias resistors (R, R, R), each in parallel to one another. The microcontroller may directly control the voltage outputs or act via respective switches (S, S) regarding each respective resistor. When the electronic circuit with the phototransistor (Q) is switched on, at least one of the external bias resistors (R, R, R) are switched on. The voltage output rise time is short, and when the bias has been set, the external bias resistor(s) are disconnected functionally. This means that during the actual measurement with the electric circuit, only the main resistor (R) is used in the connection.

Arrangement for a photodetector circuit for low power applications, and a corresponding method and a computer program product

The invention relates to a system for indicating information representing battery status of an electronic device. The system comprises a charging unit and an electronic device. The charging unit comprises: charging means; wireless communication means; and indication means. The electronic device comprises a rechargeable battery; charging means; and wireless communication means. During the wireless charging of the electronic device the electronic device is configured to detect information representing the battery status of said electronic device and to communicate the detected information representing the battery status to the charging unit, and the charging unit is configured to receive the information from the electronic device and to indicate at least part of the received information representing the battery status of the electronic device. The invention relates also to a method for indicating information representing battery status of an electronic device.

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Oulu, Finland

Petteri Järvelä