摘要:
Clocks between at least two wireless devices are synchronized to reduce the need to transmit synchronization signals over a wireless communication channel therebetween. Two wireless devices synchronize their respective clocks with each other when each are electrically coupled, e.g., during a cradle time when brought into physical contact with each other through charge contacts, e.g., to recharge a remote portable unit. The charge signal appearing at the charge contacts is driven to create a time duration marked by a start transition and an end transition in the charge signal. The number of clock pulses of each of the two wireless devices during the time duration is counted, and compared to determine the difference in clock speeds of the wireless devices. The frequency of the clock of at least one of the wireless devices is adjusted to bring the difference in the clock speeds within a predetermined threshold tolerance level.
摘要:
A method and apparatus to perform a real-time drift correction of a remote handset's local oscillator in a digital cordless telephone. The remote handset begins in a standby (sniff) mode. The remote handset periodically wakes from a sleep mode and goes into a normal link verification mode. Once in the link verification mode, the remote handset enters a time division duplexing (TDD) mode and attempts to establish a link with a base unit based on the timing of the TDD data frame. After the remote handset establishes a link with the base unit, the remote handset requests a security word from the base unit. Upon receiving the requested security word, the remote handset determines if the requested security word matches a security word of the remote handset. The remote handset implements a software frequency adjustment of its local oscillator. Once per frame, the remote handset enters a timing recovery state where the current state of the frame is compared with a previous state. When the cumulative timing slip is greater than a designated threshold, a frequency adjustment is made. During this exchange of commands between the remote handset and base unit, the remote handset continuously adjusts its local oscillator to achieve frequency alignment within, e.g., 1 part per million (ppm). Alternatively, frequency alignment may be achieved to a specified value.
摘要:
An embodiment of the disclosed subject matter allows wireless electronic badges to temporarily establish a wireless network, such as a piconet network, with a network security station. The wireless electronic badges automatically exchange user code with the network security station, to determine if the wireless electronic badge is authorized. If the wireless electronic badge is an authorized badge, then the network security station transmits display information to the authorized badge, for example, data for a photograph of the authorized user, where, upon receipt by the authorized badge, the badge visually displays the photograph.
摘要:
An apparatus and technique for allowing wireless electronic badges to temporarily establish a wireless network (e.g., a piconet network) with a network security station mounted in a facility of an employer, a gym, a membership club, etc. The wireless electronic badges automatically exchange user code with the network security station, and receives relevant badge information for display and use by that particular secured facility. In a preferred embodiment, BLUETOOTH technology is used in the wireless piconet front ends of the electronic wireless badge and the network security station. The disclosed electronic wireless badge includes an LCD display, a display controller, an information exchange module, and a wireless front end (e.g., a wireless piconet network such as a BLUETOOTH network). The electronic wireless badge includes a unique user code which is passed to the network security station. The network security station includes a complementary wireless front end, together with a database of user codes and badge display information for the properly authorized user codes. As an individual enters an area requiring identification, their electronic wireless badge exchanges a security code with the network security station, and upon proper authorization receives from the network security station appropriate badge display information for display. Exemplary display information may include, e.g., a photo of the authorized user corresponding to the authorization code in the electronic wireless badge, a name of the authorized user, an identification number, a company for which the displayed badge information relates, a membership type, a security level, etc.
摘要:
This invention provides nucleoside triphosphate analogues having the structure: wherein B is a base and is adenine, guanine, cytosine, uracil or thymine, wherein R″ is an OH or an H, and wherein R′ is azidomethyl, a hydrocarbyl, or a substituted hydrocarbyl, and which has a Raman spectroscopy peak with wavenumber from 2000 cm−1 to 2300 cm−1 or a Fourier transform-infrared spectroscopy spectroscopy peak with wavenumber from 2000 cm−1 to 2300 cm−1, and also to methods of DNA sequencing and SNP detection.
摘要:
Processes for making light to current converter devices are provided. The processes can be used to make light to current converter devices having P-N junctions located on only the top surface of the cell, located on the top surface and symmetrically or asymmetrically along a portion of the inner surface of the via holes, located on the top surface and full inner surface of the via holes, or located on the top surface, full inner surface of the via holes, and a portion of the bottom surface of the cell. The processes may isolate the desired P-N junction by etching the emitter, forming a via hole after forming the emitter, using a barrier layer to protect portions of the emitter from etching, or using a barrier layer to prevent the emitter from being formed on portions of the substrate.
摘要:
This disclosure provides an isolated or purified decellularized liver extracellular matrix (DLM) composition containing an isolated or purified cell capable of differentiating into a hepatocyte and/or liver tissue, and methods for its use in vitro and in vivo.
摘要:
A full-automatic detecting system and method for a transformer. The system comprises a material delivery line; a feed device; a detection delivery line; insulating test devices; error detecting devices; a laser marking device; a discharge device; and a detection management system. The insulating test devices, the error detecting devices, and the laser marking device are sequentially arranged beside the detection delivery line. The material delivery line, the detection delivery line, and the devices work in coordination, to realize full-automatic detection of the transformer, avoid manual detection errors and improve the sorting accuracy.
摘要:
A method, a mobile system, and a home network base station are disclosed. A mobile management entity 502 may generate a local network access disable notification message element 650 to provide available options to a mobile system 104 for establishing packet data network connectivity upon an access loss to a home network base station 110. The mobile management entity 502 may send the local network access disable notification message element 650 to the mobile system 104 upon an imminent local network access loss event.
摘要:
A method for utilizing biomass components, namely cellulose, hemicellose, and lignin, and converting them to value-added biobased chemical products is described herein. The present method provides treatments to obtain a plurality of component streams from biomass for producing derivative products while minimizing waste products.