Abstract:
There is disclosed a method and a device connected to a serial bus, said method comprising transmitting a message that indicates a power requirement for a suspended mode of said serial bus; in response to a received authorization message, setting a first or a second operating state; entering said suspended mode; drawing a current in accordance with said indicated power requirement that may exceed a predetermined current limit if said operating state is said first state, and drawing a current at or below said predetermined current limit if said operating state is said second state.
Abstract:
Systems and methods are provided for communication between master and slave devices on a network, such as a piconet or Bluetooth network. A master notifies the slave of a change in the link supervision timeout associated with the piconet. The slave stores the new link supervision timeout value and uses this value to control subsequent network-related operations, such as inquiry and paging procedures within a scatternet. The slave, aware of the link supervision timeout value for its existing connection may set an activity time limit for procedures in order to return to the physical channel of the piconet before a timeout connection loss to reestablish contact with the piconet master.
Abstract:
The present invention provides a fibrous veil having a plurality of densified portions formed thereon for improved airflow resistance. The airflow resistance may be tuned to meet the needs of a particular application by selecting the size, density and location of the densified portions. The veil may be used independently or in combination with other sound control materials. The present invention also provides a fibrous blanket having a plurality of densified portions formed on one or both major surfaces thereof for improved airflow resistance. The airflow resistance may be tuned to meet the needs of a particular application by selecting the size and density of the densified portions. A method of manufacturing the materials of the present invention by applying heat and/or pressure to portions of the material is also presented.
Abstract:
A method involving: sending from a first apparatus to a second apparatus a first message identifying the first apparatus and a second message scheduling a time period for reply; receiving at the first apparatus during the time period scheduled by the second message a third message sent by the second apparatus; and in response to receiving the third message, changing a role of the first apparatus so that it is operable to schedule bi-directional data transfer between the first apparatus and the second apparatus.
Abstract:
A low power radio frequency transceiver is arranged to form a network of communicating low power radio frequency transceivers. It comprises a transmitter for transmitting packets of data and means for controlling the transmitter to transmit a series of messages of a first type outside the network of transceivers, for maintaining synchronisation.
Abstract:
Systems and methods applicable, for example, in connection functionality. A device might, for instance, provide connection to one or more services via one or more devices. The device might, for example, detect a device offering one or more of those services. The device providing connection might, for instance, consider one or more priorities, connection disruption indications, and/or connection maintenance indications. The device providing connection might, for example, stop providing connection via one or more of the devices via which connection was being provided, and/or might start providing connection via the detected device.
Abstract:
An antiferromagnetically exchange-coupled structure for use in a magnetic device, such as a magnetoresistive sensor, includes an underlayer formed of a chemically-ordered tetragonal-crystalline alloy, a chemically-ordered tetragonal-crystalline Mn-alloy antiferromagnetic layer in contact with the underlayer, and a ferromagnetic layer exchange-coupled with the antiferromagnetic layer. The underlayer is an alloy selected from the group consisting of alloys of AuCu, FePt, FePd, AgTi3, Pt Zn, PdZn, IrV, CoPt and PdCd, and the antiferromagnetic layer is an alloy of Mn with Pt, Ni, Ir, Pd or Rh. The underlayer enhances the transformation of the Mn alloy from the chemically-disordered phase to the chemically-ordered phase. In one example, an exchange-coupled structure with an underlayer/antiferromagnetic layer of AuCu/PtMn allows the PtMn to be made substantially thinner, thus reducing the electrical resistance of the structure and improving the performance of a current-perpendicular-to-the-plane (CPP) magnetoresistive sensor.
Abstract:
In an X-ray tube having a housing, an outer frame for providing a vacuum, a cathode mounted in the outer frame to project a stream of electrons, and an anode disposed to receive the electron stream at a focal spot position to produce X-rays, apparatus is provided for selectively mounting the anode within the housing. More particularly, the apparatus is disposed to respond to the heat generated by the X-ray production process to provide compensation for undesirable effects resulting from thermal expansion of the anode. The apparatus generally comprises an anode frame structure disposed to support the anode for rotation about a specified axis, and further comprises an anode plate joined to the frame structure for locating the anode at an initial position, in spaced-apart relationship with the cathode and with the aperture of a collimator in fixed relation to the tube, and for displacing the anode away from the initial position, in a direction opposite to the direction of anode thermal expansion, to provide compensation therefor. A compliant plate mounting arrangement is provided for selectively attaching the anode plate to the housing.