Patent application number | Description | Published |
20090140443 | Microstructure with Enlarged Mass and Electrode Area for Kinetic to Electrical Energy Conversion - A microstructure has a substrate, a fixed electrode having a plurality of fixed fingers fixed to the substrate, a movable electrode having a body ( | 06-04-2009 |
20090284102 | System and Method for Resonance Frequency Tuning of Resonant Devices - Tunable vibration energy scavengers and methods of operating the same are disclosed. The disclosed energy scavengers comprise a beam with a main body, wherein the beam comprises at least one flap and means for changing a shape of the at least one flap, wherein the at least one flap is physically attached to the main body along a longitudinal side of the main body. The disclosed methods comprise tuning the shape of the at least one flap, thereby tuning the stiffness of the structure. | 11-19-2009 |
20100187835 | Electromagnetic Energy Scavenger Based on Moving Permanent Magnets - An electromagnetic energy scavenger ( | 07-29-2010 |
20110074247 | Systems and Methods for Resonance Frequency Tuning of Micromachined Structures - A microstructure according to embodiments of the present invention comprises a substrate, and a resonant structure having a resonance frequency and comprising a seismic mass and suspension elements for suspending the seismic mass at two opposite sides onto the substrate. The substrate is adapted for functioning as a tuning actuator adapted for applying stress onto the suspension elements, thus changing the stiffness of the suspension elements. This way, the resonance frequency of the microstructure may be adapted to input vibration frequencies which may vary over time or may initially be unknown. By adapting the resonance frequency of the resonant structure, a suitable power may be generated, even in circumstances of variable input frequencies. | 03-31-2011 |
20130076202 | MICRO-ELECTROMECHANICAL GENERATOR AND ELECTRIC APPARATUS USING SAME - Disclosed is a highly reliable inductive vibration power generator wherein mechanical damping caused by the phenomenon of electrostatic pulling-in (stiction) and the like is suppressed even if the potential of an electret is increased and/or the gap between an electrode and the electret is reduced in order to increase the amount of power generation. The two surfaces of a movable substrate are respectively provided with first electrets and second electrets. By means of providing first electrodes and second electrodes to a lower substrate and an upper substrate and facing the respective electrets with a predetermined gap therebetween, electrostatic force is caused to arise on both sides of the movable substrate, and the pulling of the movable substrate in only one direction is prevented. | 03-28-2013 |
Patent application number | Description | Published |
20090077263 | METHODS AND APPARATUS FOR DATASET SYNCHRONIZATION IN A WIRELESS ENVIRONMENT - Methods, apparatus, systems, and computer program products are provided for wirelessly synchronizing datasets that are stored on a wireless device and at a network device, such as a network server or database. Present aspects provide for a simplified and efficient synchronization process, whereby synchronization can be completed in a single round-trip of wireless communication between the wireless device and the network device. Single round-trip synchronization provides for less use of network resources, shorter overall synchronization cycle times and lessens the likelihood of wireless network failures, such as call drops or the like, causing the synchronization process to fail. Additionally, simplification and efficiency are further realized by creating a synchronization process that allows the network dataset to be independent of the wireless device datasets, i.e., the network server does not require a full change history nor is the network server required to know the wireless device dataset version. | 03-19-2009 |
20110107107 | Multisigning - A Protocol For Robust Multiple Party Digital Signatures - Embodiments describe a system and/or method for multiple party digital signatures. According to a first aspect a method comprises establishing a first validity range for a first key, establishing a first validity range for at least a second key, and determining if the validity range of the first key overlaps the first validity range of the at least a second key. A certificate is signed with the first validity range of the first key and the first validity range of the at least a second key if the validity ranges overlap. According to another embodiment, signage of the certificate is refused if the first validity range of the first key does not overlap with the first validity range of the at least a second key. | 05-05-2011 |
20140133656 | Preserving Security by Synchronizing a Nonce or Counter Between Systems - Methods, systems and devices enable synchronizing obscured identification information between a wireless identity transmitter and a central server to support one-way communication of the obscured identification information to the central server. The wireless identity transmitter may be a compact device configured to broadcast messages, such as through Bluetooth® advertisements, including an obscured identifier for receipt and relay to the central server by proximate proximity broadcast receivers via sighting messages that may also include location information. The central server may decode received identification codes to identify the wireless identity transmitter. The wireless identity transmitter may create message data by concatenating identifying information with an incrementing nonce, encrypting the concatenated information, and truncating the encrypted information. Alternatively, concatenated identification information may be encrypted with a pseudo-random function and a secret key known by the central server. The central server that may compare received data to pre-calculated encrypted data. | 05-15-2014 |
Patent application number | Description | Published |
20100269156 | APPARATUS AND METHODS FOR PROVIDING AUTHORIZED DEVICE ACCESS - Methods, apparatus, and systems are described for providing an accessor device an access credential to interact with a device resource on an accessee device. An authorization entity having a trust relationship with the accessee device, or a linked subordinate authorization entity, generates the access credential. The access credential includes a modification detection indicator, at least one access privilege, and an accessor public key. The at least one access privilege corresponds to at least one device resource on the accessee device. The authorization entity forwards the access credential to the accessor device, which presents the access credential to the accessee device for authentication. Once authenticated, the accessee device grants access to one or more device resources, and controls requests to insure they are within the scope of the at least one access privilege. | 10-21-2010 |
20120311655 | APPARATUS AND METHOD OF MANAGING A LICENSABLE ITEM - An apparatus and method of managing a licensable item includes accessing a licensing policy related to managing a licensable item, and a license agent making a determination to act to enforce the licensing policy or to first communicate with a server before acting to enforce the licensing policy. Further, the apparatus and method include enforcing the licensing policy in accordance with the determination to act to enforce the licensing policy or to first communicate with a server before acting. | 12-06-2012 |
20120311656 | APPARATUS AND METHOD OF LAYERED LICENSING - A methodology and apparatus for layered licensing is described. A licensable item is detected on a device. A legacy license associated with the licensable item is accessed, wherein the legacy license corresponds to a legacy licensing policy. A layered license associated with the licensable item is accessed, wherein the layered license corresponds to a layered licensing policy. The legacy licensing policy and the layered licensing policy are integrated into an integrated license, and the integrated license is enforced. | 12-06-2012 |
20130326596 | APPARATUS AND METHODS FOR PROVIDING AUTHORIZED DEVICE ACCESS - Methods, apparatus, and systems are described for providing an accessor device an access credential to interact with a device resource on an accessee device. An authorization entity having a trust relationship with the accessee device, or a linked subordinate authorization entity, generates the access credential. The access credential includes a modification detection indicator, at least one access privilege, and an accessor public key. The at least one access privilege corresponds to at least one device resource on the accessee device. The authorization entity forwards the access credential to the accessor device, which presents the access credential to the accessee device for authentication. Once authenticated, the accessee device grants access to one or more device resources, and controls requests to insure they are within the scope of the at least one access privilege. | 12-05-2013 |
20150363901 | APPARATUS AND METHOD OF MANAGING A LICENSABLE ITEM - An apparatus and method of managing a licensable item includes accessing a licensing policy related to managing a licensable item, and a license agent making a determination to act to enforce the licensing policy or to first communicate with a server before acting to enforce the licensing policy. Further, the apparatus and method include enforcing the licensing policy in accordance with the determination to act to enforce the licensing policy or to first communicate with a server before acting. | 12-17-2015 |