Abstract: In one example, a method of a transceiver comprises receiving a first communication signal including a first message; detecting a signal strength of the first communication signal; generating a preamble having a preamble bit length that is adjusted at least partially based on the detected signal strength of the first communication signal; and transmitting a second communication signal including a second message, the second message including the preamble having the preamble bit length.

Abstract: A radio arbitrator, electronic system, and method for wireless communication are disclosed in which at least two RF requests are received through a single radio module. The radio arbitrator performs predictive arbitration based on timing information of connection events to maintain a wireless connection, which is known prior to receiving RF requests including the connection events. Rf requests may be based on one or more of ZIGBEE®, Bluetooth® Low Energy, or Wi-Fi communication topologies.

Abstract: A radio arbitrator, electronic system, and method for wireless communication are disclosed in which at least two RF requests are received through a single radio module. The radio arbitrator performs predictive arbitration based on timing information of connection events to maintain a wireless connection, which is known prior to receiving RF requests including the connection events. Rf requests may be based on one or more of ZigBee, Bluetooth Low Energy, or WiFi communication topologies.

Abstract: A radio arbitrator, electronic system, and method for wireless communication are disclosed in which at least two RF requests are received through a single radio module. The radio arbitrator performs predictive arbitration based on timing information known for an RF request prior to receiving the RF request. Rf requests may be based on one or more of ZigBee, Bluetooth Low Energy, or WiFi communication topologies.

Abstract: A radio arbitrator, electronic system, and method for wireless communication are disclosed in which at least two RF requests are received through a single radio module. The radio arbitrator performs predictive arbitration based on timing information known for an RF request prior to receiving the RF request. Rf requests may be based on one or more of ZigBee, Bluetooth Low Energy, or WiFi communication topologies.

Abstract: A method for operating a mesh network is described. The method includes using a protocol comprising an address and a payload, wherein the address and payload are restricted. The method also includes using a hash function to generate an address from a description, wherein the description uses ASCII characters, wherein a message uses the description as an address and wherein the description is transformed into the address using the hash function and added together with the message into the payload, assigning the generated address to a device, wherein the device is part of a mesh network, and in a transmission from a source to the device, providing the generated address within the payload.

Abstract: A data processing apparatus, including data dies, an error checking and correcting (ECC) die, a double data rate synchronous dynamic random access memory (RAM) (DDR) controller, and a DDR physical interface (PHY). The data dies and the ECC die are DDR dies of a same data bit width, and the DDR PHY is coupled to data interfaces of the data dies and the ECC die. The DDR controller includes a first checking circuit, a second checking circuit, and a cache. Both of the two checking circuits are coupled to the cache, type 1 interfaces of the two checking circuits are coupled to the data interfaces of the data dies using the DDR PHY, and type 2 interfaces of the two checking circuits are coupled to the data interface of the ECC die using the DDR PHY.

Abstract: A method for operating a mesh network is described. The method includes using a protocol comprising an address and a payload, wherein the address and payload are restricted. The method also includes using a hash function to generate an address from a description, wherein the description uses ASCII characters, wherein a message uses the description as an address and wherein the description is transformed into the address using the hash function and added together with the message into the payload, assigning the generated address to a device, wherein the device is part of a mesh network, and in a transmission from a source to the device, providing the generated address within the payload.

Abstract: An inexpensive and low-power demand RF wireless device having data acquisition capabilities may be used for simple applications such as a standalone data repeater or a standalone data acquisition node without requiring a host microcontroller unit (MCU) or programmable logic for control of the wireless device.

Abstract: A magnetic printing apparatus and a magnetic printing method are disclosed. The magnetic printing apparatus comprises a printing device, a magnetically orientating device and a curing device. The printing device is adapted to form a magnetic-ink layer, wherein the magnetic-ink layer comprises a plurality of magnetic pigment flakes therein. The magnetically orientating device is adapted to magnetically orientate the magnetic pigment flakes. The curing device is adapted to cure the magnetic-ink layer. The magnetically orientating device comprises at least one cylindrical magnet that has an S-pole side surface, an N-pole side surface and an end surface for connecting the aforesaid two side surfaces. When being observed from the end surface, at least one of the aforesaid two side surfaces is a curved surface, and the printing substrate is disposed above or beneath the end surface to form an arc-shaped magnetically orientated pattern in the magnetic-ink layer.

Abstract: A manufacturing method and a manufacturing apparatus for a printing magnetic orientation master and a magnetic pigment presswork are provided. The manufacturing method for a printing magnetic orientation master comprises: providing a magnet; using a heat radiation beam to heat a partial area of the magnet so that a new magnetic domain structure is formed in the partial area through self-magnetization of the magnet to change a magnetic-field distribution in the partial area; and removing the heat radiation beam to keep the new magnetic domain structure after it is decreased to a normal temperature so that the changed magnetic-field distribution is kept in the partial area, thus forming the printing magnetic orientation master having a predetermined magnetic orientation pattern. This can simplify the manufacturing process of the printing magnetic orientation master and allow the printing magnetic orientation master to carry abundant pattern information.

Abstract: A tracking system includes a network; a plurality of signal sources communicatively coupled to the network, the plurality of signal sources configured to transmit substantially identical signals; and an RFID tag configured to receive the substantially identical signals from the plurality of signal sources, determine points of intersection from hyperbola curves defining phase differences between the substantially identical signals, a point of intersection of three hyperbola curves defining a location of the user device. In some embodiments, the plurality of signal sources comprise a single transmitter and a predetermined plurality of substantially identical antennas coupled to the single transmitter by cables of a substantially same length.

Abstract: An inexpensive and low-power demand RF wireless device having data acquisition capabilities may be used for simple applications such as a standalone data repeater or a standalone data acquisition node without requiring a host microcontroller unit (MCU) or programmable logic for control of the wireless device.

Abstract: Improved message range in a wireless network is achieved by each node performing an energy/noise scan to determine a receiving channel having the lowest noise and/or interference, e.g., best reception conditions, relative to the other channels available in the wireless network. Each node may thereafter scan available channels periodically to adjust its optimal receiving channel if the noise/interference environment changes on its present receiving channel, e.g., noise/interference on another channel is less then the noise on the present receiving channel. When a receiving channel is changed by a node, the wireless node may broadcast this information to notify its neighbor nodes of the change in its receiving channel.

Abstract: A method of characterizing a device under test (DUT) includes determining a goal function associated with a setup and hold time for the DUT. A minimum value for the goal function is determined by iteratively adjusting setup and hold times for input data to the DUT, and determining whether the DUT performs according to specifications. The minimum goal function value will reflect minimum setup and hold time values based on weights associated with the goal function. This allows the minimum setup and hold times for the DUT to be characterized with a small number of binary searches, improving the speed of the characterization process.

Abstract: The present invention relates to a kind of infrared sensing device mounted in the faucet at the basin, it comprises an infrared emitting tube for emitting the infrared light, an infrared receiving tube for receiving the infrared light, a circuit board on which the infrared emitting and receiving tubes are mounted, a housing for accommodating the infrared emitting and receiving tubes, an emitting lens for focusing the emitted infrared light, an receiving lens for focusing the reflected infrared light. The optical center of the emitting lens is biased to left or right, which enables the emitted light to deviate from the water column from the faucet, meanwhile, the optical center of the emitting lens is also biased up, which enables the emitted light to deviate from the basin. Compared with the prior arts, this infrared sensing device in the present invention has better sensing effects, which is economical, practical and costs lower.

Abstract: Improved message range in a wireless network is achieved by each node performing an energy/noise scan to determine a receiving channel having the lowest noise and/or interference, e.g., best reception conditions, relative to the other channels available in the wireless network. Each node may thereafter scan available channels periodically to adjust its optimal receiving channel if the noise/interference environment changes on its present receiving channel, e.g., noise/interference on another channel is less then the noise on the present receiving channel. When a receiving channel is changed by a node, the wireless node may broadcast this information to notify its neighbor nodes of the change in its receiving channel.

Abstract: A method of characterizing a device under test (DUT) includes determining a goal function associated with a setup and hold time for the DUT. A minimum value for the goal function is determined by iteratively adjusting setup and hold times for input data to the DUT, and determining whether the DUT performs according to specifications. The minimum goal function value will reflect minimum setup and hold time values based on weights associated with the goal function. This allows the minimum setup and hold times for the DUT to be characterized with a small number of binary searches, improving the speed of the characterization process.

Abstract: A method for determining polynomials to model circuit delay includes the step of determining one or more error areas in a characteristic map that exceed an error margin. Next, a current domain count is set to zero and selecting one error area of the one or more error areas is selected. A patch region that will contain the error area determined the patch region is then curve fitted and the current domain count is increased by one. The steps of repeating steps of selecting an error area, determine a patch, curve fitting within the patch, and increasing the domain count by one are repeated until there are no error area within the patch region.

Abstract: A method for determining polynomials to model circuit delay includes the step of determining one or more error areas in a characteristic map that exceed an error margin. Next, a current domain count is set to zero and selecting one error area of the one or more error areas is selected. A patch region that will contain the error area determined the patch region is then curve fitted and the current domain count is increased by one. The steps of repeating steps of selecting an error area, determine a patch, curve fitting within the patch, and increasing the domain count by one are repeated until there are no error area within the patch region.