Abstract: An electronic device may have an ambient light sensor for gathering ambient light measurements. The ambient light sensor may include multiple channels for measuring different wavelengths of ambient light. An additional, modified, channel may be formed in the ambient light sensor to measure radio-frequency signals that may interfere with the ambient light measurements due to electromagnetic interference. Alternatively, circuitry separate from the ambient light sensor, such as an antenna, may measure the radio-frequency signals. If the radio-frequency signals exceed a threshold, the ambient light sensor measurements taken in the presence of the radio-frequency signals may be discarded or corrected. If the radio-frequency signals do not exceed a threshold, the ambient light sensor measurements may be kept. Therefore, the ambient light measurements that are kept and relied upon by the electronic device may be free from electromagnetic interference.

Abstract: An electronic device may have an ambient light sensor for gathering ambient light measurements. The ambient light sensor may include multiple channels for measuring different wavelengths of ambient light. An additional, modified, channel may be formed in the ambient light sensor to measure radio-frequency signals that may interfere with the ambient light measurements due to electromagnetic interference. Alternatively, circuitry separate from the ambient light sensor, such as an antenna, may measure the radio-frequency signals. If the radio-frequency signals exceed a threshold, the ambient light sensor measurements taken in the presence of the radio-frequency signals may be discarded or corrected. If the radio-frequency signals do not exceed a threshold, the ambient light sensor measurements may be kept. Therefore, the ambient light measurements that are kept and relied upon by the electronic device may be free from electromagnetic interference.

Abstract: A hinge primarily for a roof window with a pivotally opening sash comprises a body to be fixed to the frame of the window, a support member pivoted to the body and arranged to be secured to the sash, a stay member pivoted to the support member spaced from its connection to the body, and constraining mechanism comprising a frictional assembly and positive catch mechanism to hold at least one position of the sash. As the sash is pivoted, the stay member has one end moved in an arc by the support member while its other end is constrained to reciprocation within the body. The catch mechanism may be operable from a remote position on the frame.

Abstract: A modem is described for transmitting digitally coded information between an information distribution network and a data processing unit, which modem is responsive to modem control instructions provided by the very same keyboard input providing data transmission. The modem is capable of distinguishing modem control instructions from data transmission and includes such control functions as automatic telephone answering, automatic redialing of busy numbers, and an automatic escape sequence for terminating data transmission.