Patent application number | Description | Published |
20100308747 | PULSE WIDTH MODULATION (PWM) CLOSED LOOP LED CURRENT DRIVER IN AN EMBEDDED SYSTEM - Methods and systems for providing stable and accurate low noise DC reference voltage are described. In the described embodiments, a feedback controlled DC reference voltage supply provides a stable and well controlled sense current. The sense current is in turn used to produce a stable and well controlled light output from a light emitting diode (LED). | 12-09-2010 |
20100309029 | EFFICIENTLY EMBEDDING INFORMATION ONTO A KEYBOARD MEMBRANE - Methods and systems for efficiently embedding information in a keyboard membrane. Information can be embedded in the keyboard membrane by integrating an information embedding circuit with a switch matrix used to identify location of a key press event. The information is embedded by either hardwiring a column to a selected row, or a row to a selected column. In order to access the embedded information, the row (column) is asserted resulting in the hardwired column (row) to also be asserted. The identification of the asserted column (row) is used to point to the embedded information. | 12-09-2010 |
20110297524 | MULTIPLE-POLE SINGLE-THROW DOME SWITCH ASSEMBLIES - Multiple-pole single-throw dome switch assemblies for electronic devices and methods for creating the same are provided. For example, a switch assembly may include a deformable dome that may have a conductive inner surface. The switch assembly may also include three conductive pads, at least two of which may be positioned underneath the dome. When the dome is deformed, each one of the three conductive pads may be electrically coupled to the conductive inner surface of the dome. When the dome is not deformed, at least one of the three conductive pads may be electrically isolated from the conductive inner surface of the dome. | 12-08-2011 |
20110313697 | METHOD AND APPARATUS FOR MONITORING BATTERY LIFE - A method and apparatus for monitoring battery life in a human input device powered by replaceable batteries includes repeatedly measuring battery charge by use of a measuring arrangement forming part of the input device. Battery charge is measured while the input device is in a relatively inactive condition and when it is in an active condition, and a time value is associated with each battery charge measurement. A usage model may be constructed based on the battery charge measurements, and calculation of an expected battery life may be based at least in part on the usage model. | 12-22-2011 |
20120306655 | ADAPTIVE LOW-BATTERY WARNINGS FOR BATTERY-POWERED ELECTRONIC DEVICES - The disclosed embodiments provide a system that facilitates the use of an electronic device. The electronic device may be a keyboard, a mouse, a trackpad, a remote control, a mobile phone, a wireless phone, a toy, a portable media player, a game controller, and/or a camera. During operation, the system monitors a state-of-charge of a battery used to power the electronic device. Next, the system calculates a charge threshold associated with a low-battery warning for the battery based on the monitored state-of-charge. If the state-of-charge of the battery reaches the charge threshold, the system generates the low-battery warning. | 12-06-2012 |
20130027297 | 3D REMOTE CONTROL SYSTEM EMPLOYING ABSOLUTE AND RELATIVE POSITION DETECTION - The present invention can include three-dimensional remote control systems that can detect an absolute location to which a remote control is pointing in first and second orthogonal axes and an absolute position of the remote control in a third orthogonal axis. Remote control systems of the present invention can employ absolute position detection with relative position detection. Absolute position detection can indicate an initial absolute position of the remote control and relative position detection can indicate changes in the position of the remote control. By combining absolute and relative position detection, remote control systems of the present invention can track remote controls more precisely than systems that only employ absolute position detection. The present invention also can include methods and apparatus for zooming in and out of an image shown on a display based on the absolute position of the remote control in the third axis. | 01-31-2013 |
20130080811 | Low Power Input Device - An input device for an electronic device. The input device includes a power source, a processor in communication with the power source. Additionally, the input device includes a main sensor in communication with processor and configured to detect a user input and an auxiliary sensor in communication with the processor and configured to detect a user input. When the input device is in a normal power mode or active state, the main sensor is activated and when the input device is in a low power state the main sensor is deactivate and the auxiliary sensor is activated. | 03-28-2013 |
20140034474 | MULTI-POLE SINGLE-THROW DOME SWITCH ASSEMBLIES - Multiple-pole single-throw dome switch assemblies for electronic devices and methods for creating the same are provided. For example, a switch assembly may include a deformable dome that may have a conductive inner surface. The switch assembly may also include three conductive pads, at least two of which may be positioned underneath the dome. When the dome is deformed, each one of the three conductive pads may be electrically coupled to the conductive inner surface of the dome. When the dome is not deformed, at least one of the three conductive pads may be electrically isolated from the conductive inner surface of the dome. | 02-06-2014 |
20140166911 | REMOTE CONTROL SYSTEMS THAT CAN DISTINGUISH STRAY LIGHT SOURCES - Remote control systems that can distinguish predetermined light sources from stray light sources, e.g., environmental light sources and/or reflections are provided. The predetermined light sources can be disposed in asymmetric substantially linear or two-dimensional patterns. The predetermined light sources also can output waveforms modulated in accordance with one or more signature modulation characteristics. The predetermined light sources also can output light at different signature wavelengths. | 06-19-2014 |
20140168081 | 3D REMOTE CONTROL SYSTEM EMPLOYING ABSOLUTE AND RELATIVE POSITION DETECTION - The present invention can include three-dimensional remote control systems that can detect an absolute location to which a remote control is pointing in first and second orthogonal axes and an absolute position of the remote control in a third orthogonal axis. Remote control systems of the present invention can employ absolute position detection with relative position detection. Absolute position detection can indicate an initial absolute position of the remote control and relative position detection can indicate changes in the position of the remote control. By combining absolute and relative position detection, remote control systems of the present invention can track remote controls more precisely than systems that only employ absolute position detection. The present invention also can include methods and apparatus for zooming in and out of an image shown on a display based on the absolute position of the remote control in the third axis. | 06-19-2014 |
20150042480 | ADAPTIVE LOW-BATTERY WARNINGS FOR BATTERY-POWERED ELECTRONIC DEVICES - The disclosed embodiments provide a system that facilitates the use of an electronic device. The electronic device may be a keyboard, a mouse, a trackpad, a remote control, a mobile phone, a wireless phone, a toy, a portable media player, a game controller, and/or a camera. During operation, the system monitors a state-of-charge of a battery used to power the electronic device. Next, the system calculates a charge threshold associated with a low-battery warning for the battery based on the monitored state-of-charge. If the state-of-charge of the battery reaches the charge threshold, the system generates the low-battery warning. | 02-12-2015 |