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Fiennes
Hugo Fiennes, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100272252 | MICROPHONE LINE BASED DETECTION OF HEADSET PLUG REMOVAL - Embodiments of the invention include methods, apparatus, systems and means for distinguishing between microphone line signals resulting from: actuation of a microphone button of a headset plugged into a telephone device jack, and removal of the headset plug form the jack. During a telephone call, a first signal can be detected on a microphone line of a headset jack to indicate whether a microphone button of the headset is actuated. Also, while the headset plug is being disconnected from the jack, a transition on the microphone line can be detected, from a second signal indicating that the microphone is being disconnected, to a third signal indicating that the microphone button is actuated. Consequently, to avoid erroneously hanging up a call, transitions to the third signal when removing the plug form the jack can be ignored and the call can be maintained. Other embodiments are also described and claimed. | 10-28-2010 |
Hugo Fiennes, Palo Alto, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090296769 | CALIBRATION OF TEMPERATURE SENSING CIRCUITRY IN AN ELECTRONIC DEVICE - Temperature sensing circuitry is used for thermal management of an electronic device. The temperature sensing circuitry includes at least one thermistor placed at or near a component of the electronic device. The temperature sensing circuitry also includes a high-precision resistor for calibration purposes. The resistance of the resistor is equivalent to the resistance of the thermistor at a reference temperature. A calibration reading is obtained using a set current that is being passed through the resistor. An error present in the temperature sensing circuitry is determined based on the calibration reading and a design value. A temperature measurement associated with the component is then made using the thermistor, while the set current is being passed through the thermistor. The error is corrected in the temperature measurement of the component. Other embodiments are also described. | 12-03-2009 |
| 20100069127 | ELECTRONIC DEVICES FOR RECEIVING PUSHED DATA - Mobile devices such as cellular telephones are provided that communicate with wireless networks. Cellular telephone network equipment may communicate with a cellular telephone over a data connection. The cellular telephone may have an internet protocol (IP) address that allows data to be provided to the cellular telephone over the data connection. To conserve resources and release unused IP addresses, the cellular telephone network equipment may deactivate inactive data connections after a period of inactivity. A baseband processor within a mobile device may periodically send User Datagram Protocol (UDP) keep-alive packets over the data connection to ensure that the data connection remains active. The keep-alive packets may be directed to a packet sink server or may be associated with a black hole route. An applications processor in the telephone may remain in sleep mode during keep-alive packet transmission to conserve power. | 03-18-2010 |
| 20100079128 | LOW NOISE EXTERNAL ENABLE SWITCHER CONTROL SIGNAL USING ON-CHIP SWITCHER - A method and system is disclosed for powering device sub-circuitry of an electronic device. The sub-circuitry may be used to provide control signals to a direct current switcher on a main system board, thus eliminating passive circuitry typically associated with the sub-circuitry. Furthermore, by actively generating the control signals for the direct current switcher, explicit timing control circuitry is not required to synchronize the transmitted power to the sub-circuitry. | 04-01-2010 |
| 20100246143 | Electromagnetic Interference Shielding for Compact Electronic Devices - Improved approaches for providing electromagnetic interference shielding to one or more electrical components within a housing of a portable electronic device are disclosed. According to one aspect of certain embodiments, an electromagnetic shield can be attached to one or more edges of a substrate (e.g., printed circuit board) provided within a housing of a portable electronic device. Advantageously, this allows the substrate space to be efficiently utilized such that relatively wide electrical components can be provided on the substrate without having to further increase the width of the substrate to provide space for an EMI shielding structure and its attachment to the substrate. The housing of the portable electronic device can be compact, such as a low profile housing. | 09-30-2010 |
Hugo Fiennes, Mountain View, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080305676 | Plug detection mechanisms - Plug detection mechanisms can be provided for detecting when a plug of an accessory component is present within a jack of an electronic device. A detect contact and a jack contact may be positioned within a receptacle of the jack such that a signal path may be created through the plug and between the detect contact and the jack contact when the plug is present within the receptacle of the jack. The detect contact may be biased to exert a retention force on the plug. The detect contact may be positioned to contact the plug within an indent of the plug. | 12-11-2008 |
| 20090307511 | PORTABLE ELECTRONIC DEVICES WITH POWER MANAGEMENT CAPABILITIES - An electronic device may operate in standby and active modes. A headset may be coupled to the electronic device. The electronic device may have audio codec circuitry. The audio codec circuitry may use general purpose input-output circuitry in handling button and headset activity during active mode. Processing circuitry may be used to reconfigure the audio codec in real time. When the electronic device is in the standby mode and activity is detected, the codec may be configured to provide an interrupt signal to a power management unit that wakes the device. When the electronic device is in active mode and no user inputs are received within a given period of time, the central processor in the electronic device may place the device in standby mode. | 12-10-2009 |