Patent application number | Description | Published |
20080230624 | ELECTRONIC ACTUATOR FOR SIMULTANEOUS LIQUID FLOWRATE AND PRESSURE CONTROL OF SPRAYERS - An electric solenoid valve and electronic circuitry for actuating the valve in such a manner as to control the liquid flow into a device, such as a spray nozzle, is described. By altering the characteristics of the electrical signal driving the valve, the flowrate of liquid through the valve and the pressure drop across the valve during the instantaneous flow can be controlled with a single actuator. The complex waveform of the solenoid drive signal allows decoupled control of droplet size and average flow rate through the nozzle. | 09-25-2008 |
20090134237 | SYSTEM AND METHOD FOR AT-NOZZLE INJECTION OF AGROCHEMICALS - A system and method for combining an additive with a carrier fluid in a spray nozzle. The carrier fluid is fed to one or more nozzles that include an embedded Venturi. The Venturi includes an induction port connected to an additive supply. As the carrier fluid flows through the nozzle, the flow creates a vacuum or suction force that draws in the additive. Of particular advantage, the concentration of the additive combined with the carrier fluid can be maintained constant even if the flow rate of the carrier fluid varies. The system and process are particularly well suited for spraying fields, such as crop fields or orchards, with an agrochemical. | 05-28-2009 |
20120168532 | SYSTEM AND METHOD FOR AT-NOZZLE INJECTION OF AGROCHEMICALS - A system and method for combining an additive with a carrier fluid in a spray nozzle. The carrier fluid is fed to one or more nozzles that include an embedded Venturi. The Venturi includes an induction port connected to an additive supply. As the carrier fluid flows through the nozzle, the flow creates a vacuum or suction force that draws in the additive. Of particular advantage, the concentration of the additive combined with the carrier fluid can be maintained constant even if the flow rate of the carrier fluid varies. The system and process are particularly well suited for spraying fields, such as crop fields or orchards, with an agrochemical. | 07-05-2012 |
20150079299 | AEROSOL COATING PROCESS BASED ON VOLATILE, NON-FLAMMABLE SOLVENTS - A method for coating target surfaces by spraying an atomized liquid formulation of a volatile solvent, a dispersant, and adhesion promoter, a polymer, a plasticizer and particulates of an active material and vaporizing the solvent from the spray droplets to form deformable solid particles in flight that impact the target surface to form a coating. The temperature of the atomizing gas used to form the spray and the liquid formulation temperatures can be manipulated to accelerate or decelerate the evaporation of solvent and balance the heat of vaporization of the solvent in the spray liquid so that condensation of ambient vapors in the atmosphere surrounding the deposition target is prevented. | 03-19-2015 |
Patent application number | Description | Published |
20090176454 | Methods and apparatus for wireless device coexistence - Methods and apparatus for compensating for the effects of interference between multiple wireless communication apparatus. In one embodiment, the method comprises providing a first wireless communication apparatus operating in a first band and a second wireless communication apparatus operating at least partly in the first band, where the second wireless communication apparatus operates according to a different communication protocol than the first wireless communication apparatus. Interference is compensated for between the first wireless communication apparatus and the second wireless communication apparatus by selecting and operating according to one of a plurality of operational protocols. In another embodiment, the first wireless communication apparatus and the second wireless communication apparatus operate in a closed-loop relationship to cooperatively compensate for communication interference. | 07-09-2009 |
20090323652 | Methods and apparatus for antenna isolation-dependent coexistence in wireless systems - Methods and apparatus for selectively switching one or more antennas in a multiple-input, multiple-output (MIMO) antenna array so as to mitigate interference with another RF interface within the same space-constrained device, based on radio frequency isolation. In one embodiment, the MIMO interface comprises a WLAN interface having a 2×2 or 3×3 array of antennae which are placed in a wireless device in an asymmetric fashion with respect to the antenna of the second interface, and the other interface comprises a PAN (e.g., Bluetooth) interface operating in an overlapping frequency band (e.g., ISM band). When both interfaces are operating, interference is mitigated through selectively switching off one or more of the MIMO antennae, and using the remaining antenna(e) having the best isolation from the Bluetooth antennae. This approach allows simultaneous operation of both interferences without significant degradation to user experience or the operation of either interface, and may also provide power savings critical to mobile device battery longevity. | 12-31-2009 |
20120083208 | WIRELESS ACCESSORY DEVICE PAIRING TRANSFER BETWEEN MULTIPLE HOST DEVICES - A wireless communications system includes an accessory device and multiple host devices. A host device pairs wirelessly with an accessory device using a unique link key, detects a primary trigger event and responds by transferring automatically its pairing with the accessory device to a second host device while all devices remain within wireless range of each other. The pairing transfer involves communicating the link key to the second host device, unpairing the accessory device from the first host device, and establishing a wireless pairing of the accessory device to the second host device. The primary trigger event can involve establishing a ported connection between host devices. A secondary trigger event results in the first host device automatically reclaiming its pairing with the accessory device. An accessory device can also select and pair with one of multiple host devices in response to a specific user gesture detected by the accessory device. | 04-05-2012 |
20120083209 | WIRELESS ACCESSORY DEVICE PAIRING DETERMINATION FOR MULTIPLE HOST DEVICES - A wireless communications system includes an accessory device and multiple host devices. A host device pairs wirelessly with an accessory device using a unique link key, detects a primary trigger event and responds by transferring automatically its pairing with the accessory device to a second host device while all devices remain within wireless range of each other. The pairing transfer involves communicating the link key to the second host device, unpairing the accessory device from the first host device, and establishing a wireless pairing of the accessory device to the second host device. The primary trigger event can involve establishing a ported connection between host devices. A secondary trigger event results in the first host device automatically reclaiming its pairing with the accessory device. An accessory device can also select and pair with one of multiple host devices in response to a specific user gesture detected by the accessory device. | 04-05-2012 |
20120207032 | METHODS AND APPARATUS FOR WIRELESS COEXISTENCE BASED ON TRANSCEIVER CHAIN EMPHASIS - Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas. | 08-16-2012 |
20130035047 | METHODS AND APPARATUS FOR ANTENNA ISOLATION-DEPENDENT COEXISTENCE IN WIRELESS SYSTEMS - Methods and apparatus for selectively switching one or more antennas in a multiple-input, multiple-output (MIMO) antenna array so as to mitigate interference with another RF interface within the same space-constrained device, based on radio frequency isolation. In one embodiment, the MIMO interface comprises a WLAN interface having a 2×2 or 3×3 array of antennae which are placed in a wireless device in an asymmetric fashion with respect to the antenna of the second interface, and the other interface comprises a PAN (e.g., Bluetooth) interface operating in an overlapping frequency band (e.g., ISM band). When both interfaces are operating, interference is mitigated through selectively switching off one or more of the MIMO antennae, and using the remaining antenna(e) having the best isolation from the Bluetooth antennae. This approach allows simultaneous operation of both interferences without significant degradation to user experience or the operation of either interface, and may also provide power savings critical to mobile device battery longevity. | 02-07-2013 |
20130225100 | METHODS AND APPARATUS FOR WIRELESS DEVICE COEXISTENCE - Methods and apparatus for compensating for the effects of interference between multiple wireless communication apparatus. In one embodiment, the method comprises providing a first wireless communication apparatus operating in a first band and a second wireless communication apparatus operating at least partly in the first band, where the second wireless communication apparatus operates according to a different communication protocol than the first wireless communication apparatus. Interference is compensated for between the first wireless communication apparatus and the second wireless communication apparatus by selecting and operating according to one of a plurality of operational protocols. In another embodiment, the first wireless communication apparatus and the second wireless communication apparatus operate in a closed-loop relationship to cooperatively compensate for communication interference. | 08-29-2013 |
20130326251 | METHOD AND APPARATUS FOR RECOVERY FROM LOW POWER STATE - A method and apparatus for recovering from a low power state in a computing system is disclosed. In one embodiment of the method, the computing system enters the low power state from a standard power state after an activity detector indicates a user controlled peripheral device connected to the computer system has been inactive for a period of time. To enter the low power state, the method disconnects the user controlled peripheral device from a host controller, while continuing to supply power to the user controlled peripheral device and shutting off power to the host controller. The method returns the computer system to the standard power state when the activity detector indicates the user controlled peripheral device has become active. To return to the standard power state, power is restored to the host controller and the user controlled peripheral device is reconnected to the host controller. | 12-05-2013 |
20140065962 | SYSTEM AND METHOD FOR CONDUCTING WIRELESS COMMUNICATIONS - A system and method for improved wireless communications at a host device (e.g., a portable computing device, a mobile communications device) having multiple wireless communication abilities (e.g., Bluetooth® and Wi-Fi®). When a component (e.g., a monitor, an Ethernet dongle) having Bluetooth capability is coupled to the host device (e.g., wired or wirelessly), the host device copies its Bluetooth link keys to the component, deactivates its own Bluetooth module and activates (or initiates activation of) the component's. The component's Bluetooth module is operated using a software stack executing on the host device. Thereafter, the component handles Bluetooth operations and the host device communicates with Bluetooth devices via the component. Greater radio isolation is thus provided between antennae used by Bluetooth and Wi-Fi. | 03-06-2014 |
20140221029 | METHODS AND APPARATUS FOR WIRELESS COEXISTENCE BASED ON TRANSCEIVER CHAIN EMPHASIS - Methods and apparatus for reduction of interference between a plurality of wireless interfaces. In one exemplary embodiment, a device having a first (e.g., Wi-Fi) interface and a second (e.g., Bluetooth) interface monitors interference between its interfaces. A reduction in transmit power of the Wi-Fi module causes a disproportionately larger reduction in undesirable interference experienced at the Bluetooth antennas. For example, when the Bluetooth interface detects interference levels above acceptable thresholds, the Wi-Fi interface adjusts operation of one or more of its transmit chains based on various conditions such as duty cycle, Received Signal Strength Indication (RSSI), etc. Various embodiments of the present invention provide simultaneous operation of WLAN and PAN interfaces, without requiring time division coexistence, by reducing power on a subset of interfering antennas. | 08-07-2014 |
20140364060 | Ordering a List of Wireless Devices for Display in a Graphical User Interface - This document describes, inter alia, techniques for use at a wireless device for establishing communications with other devices, and for displaying related information in a graphical user interface. The wireless device may discover, pair with, and/or connect to other wireless devices, and may display a list of information regarding the other wireless devices in a graphical user interface. The wireless device may order the list based on factors such as: the connectivity status of the other devices (e.g., whether the other devices are connected, paired, or discovered); the types of the other wireless devices (e.g., whether the devices are human interface devices (HIDs), audio devices, phones, imaging devices, computers, or other types of devices); whether device names for the other wireless devices are known/unknown; and/or other factors. The features described herein may be implemented using Bluetooth wireless technology, and/or any other wireless technology. | 12-11-2014 |
20150227190 | METHOD AND APPARATUS FOR RECOVERY FROM LOW POWER STATE - A method and apparatus for recovering from a low power state in a computing system is disclosed. In one embodiment of the method, the computing system enters the low power state from a standard power state after an activity detector indicates a user controlled peripheral device connected to the computer system has been inactive for a period of time. To enter the low power state, the method disconnects the user controlled peripheral device from a host controller, while continuing to supply power to the user controlled peripheral device and shutting off power to the host controller. The method returns the computer system to the standard power state when the activity detector indicates the user controlled peripheral device has become active. To return to the standard power state, power is restored to the host controller and the user controlled peripheral device is reconnected to the host controller. | 08-13-2015 |
20150350865 | PREDEFINED WIRELESS PAIRING - In order to reduce latency and overhead during the device discovery process, operations involved in pairing of two electronic devices may be predefined. In particular, when a user specifies a new electronic device in a list of their electronic devices, a computer provides a notification to these electronic devices. In response to the notification, a given one of the electronic devices generates encryption information and identification information for the given electronic device, and provides this encryption information and identification information to the new electronic device via a network (such as the Internet). Then, the new electronic device generates encryption information and identification information for the new electronic device, and provides this encryption information and identification information to the given electronic device via the network. This pairing information may subsequently facilitate secure wireless communication between the two electronic devices. | 12-03-2015 |
20150351038 | OPERATING-MODE TRANSITIONS BASED ON ADVERTISING INFORMATION - In order to reduce the power consumption of a receiving electronic device, received advertising beacons may be filtered so that the receiving electronic device selectively transitions from a power-saving mode to a normal operating mode. For example, the receiving electronic device may receive a beacon with advertising information for a transmitting electronic device. If the advertising information is changed relative to a previous version of the advertising information for the transmitting electronic device, the receiving electronic device may transition from the power-saving mode to the normal operating mode. In this way, the receiving electronic device may ‘wake up’ if it receives an advertisement that it wants to act on, such as advertisements for: file sharing, wireless streaming of information, proximity pairing and/or continuity of a user experience with an application when the user transitions from the transmitting electronic device to the receiving electronic device. | 12-03-2015 |
Patent application number | Description | Published |
20090319663 | Apparatus and methods for providing service discovery over alternate transports - Methods and apparatus for providing primary transport service discovery information over one or more alternate transports that are not normally associated with the primary transport services. In one embodiment, the primary transport comprises a first wireless interface (e.g., Bluetooth), and the alternate transport comprises a second wireless interface (e.g., WiFi or WiMAX). Service profile information relating to the primary transport is broadcast to other users over the alternate transport in a more efficient and streamlined manner than that available on the primary transport. The other users store this service profile information so that it can be subsequently accessed for service profile discovery of the transmitting device by those other devices, thereby obviating subsequent transfer of the data over any transport (primary or alternate). | 12-24-2009 |
20100240317 | METHODS AND APPARATUS FOR TESTING AND INTEGRATION OF MODULES WITHIN AN ELECTRONIC DEVICE - Methods and apparatus for analysis of electronic components such as radio transceivers (for example, WLAN, Bluetooth, cellular, GPS). In one embodiment, a “black box” is diagnosed in its final device application and layout, using a series of software test routines or suites. The test suites provide simultaneous monitoring of multiple non-overlapping status indicators. Each test suite can be selectively enabled or disabled, and may also provide runtime modification of one or more parameters, and or intelligent testing of system operation. In another embodiment, multiple black box modules within a single form factor device are simultaneously run; the interference levels between the black box modules (as well as other parameters) are independently measured, displayed and logged to the user. Exemplary embodiments are described in reference to a Bluetooth module and WLAN module operating within a spatially restricted device (such as a desktop/laptop computer, “smartphone”, Bluetooth mouse and keyboard). | 09-23-2010 |
20110081858 | METHODS AND APPARATUS FOR ENHANCED COEXISTENCE ALGORITHMS IN WIRELESS SYSTEMS - Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described. | 04-07-2011 |
20130182589 | METHODS AND APPARATUS FOR ENHANCED COEXISTENCE ALGORITHMS IN WIRELESS SYSTEMS - Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described. | 07-18-2013 |
20130294306 | NETWORK ACCESS USING SHORT-RANGE CONNECTABILITY - A device accesses a remote network using short-range connectability with another device providing shared access to the remote network. | 11-07-2013 |
20130316651 | APPARATUS AND METHODS FOR PROVIDING SERVICE DISCOVERY OVER ALTERNATE TRANSPORTS - Methods and apparatus for providing primary transport service discovery information over one or more alternate transports that are not normally associated with the primary transport services. In one embodiment, the primary transport comprises a first wireless interface (e.g., Bluetooth), and the alternate transport comprises a second wireless interface (e.g., WiFi or WiMAX). Service profile information relating to the primary transport is broadcast to other users over the alternate transport in a more efficient and streamlined manner than that available on the primary transport. The other users store this service profile information so that it can be subsequently accessed for service profile discovery of the transmitting device by those other devices, thereby obviating subsequent transfer of the data over any transport (primary or alternate). | 11-28-2013 |
20160050681 | METHODS AND APPARATUS FOR ENHANCED ALGORITHMS IN WIRELESS SYSTEMS - Methods and apparatus for mitigating the effects of interference between multiple air interfaces located on an electronic device. In one embodiment, the air interfaces include a WLAN interface and PAN (e.g., Bluetooth) interface, and information such as Receiver Signal Strength Index (RSSI) as well as system noise level information are used in order to intelligently execute interference mitigation methodologies, including the selective application of modified frequency selection, variation of transmitter power, and/or change of operating mode (e.g., from multiple-in multiple-out (MIMO) to single-in, single-out (SISO)) so as to reduce isolation requirements between the interfaces. These methods and apparatus are particularly well suited to use cases where the WLAN interface is operating with high data transmission rates. Business methods associated with the foregoing technology are also described. | 02-18-2016 |