Fibers, such as natural fibers wool and silk and synthetic fibers, for example, polyesters, such as dacron, and polyamides such as nylon are coated with a reaction product of polyhalogenated acids having a cyclic nucleus such as chlorendic acid with thiourea to render the fibers fire-resistant and self-extinguishing after removal of the initiating flame.

The timing of an access burst received in a base station of a wireless communications system is determined by detecting one or more zero bit fields, constituting predetermined sequences of identical consecutive symbols in the access burst. For each possible timing of the access burst, whether a predetermined sequence is present in the respective position in the access burst is detected by predicting a sample of the received signal in the current symbol period from a sample of the received signal...

Disclosed herein is a TDMA processing apparatus suitable for use in communication equipment for performing a communications service of a TDMA system. The TDMA processing apparatus can be reduced in size and manufactured at a low cost. The TDMA processing apparatus includes a one-chip microcomputer, which has a timer unit to which a preset value corresponding to each control-signal outputting timing as viewed from a reference point is set and for counting input reference clock pulses so as to mak...

A substrate that contains a deodorizing ink is provided. The composition contains carbonaceous particles (e.g., activated carbon) for adsorbing one or more malodorous compounds to reduce odor. Because carbonaceous particles typically have a dark black color that is sometimes aesthetically displeasing to the user, the deodorizing ink of the present invention also contains voided synthetic particles that mask, at least to some extent, the darker carbonaceous particles. More specifically, the voids...

A vibration-damping laminate having a constraining layer secured to a viscoelastic layer. The constraining layer includes a mat of non-thermoplastic fibers. The viscoelastic layer includes a thermoplastic elastomer.

A single transmitter transmits K communication bursts in a shared spectrum in a time slot of a time division duplex communication system. Each burst has an associated midamble sequence, a receiver knowing the midamble sequences of the K bursts. The receiver receives a vector corresponding to the transmitted midamble sequences of the K communication bursts. A matrix having K right circulant matrix blocks is constructed based in part on the known K midamble sequences. The wireless channel between ...

A modem interface device is coupled to a computer such that the device is powered via a power signal received from a bus port of the computer, such as a Universal Serial Bus (USB) port, a RS-232 port, or a PS-2 port. The modem interface device has a telephone base connector, a modem connector, a power connector, a two-to-four-wire converter circuit, and a power distribution circuit. The two-to-four-wire converter circuit bidirectionally couples signals between the telephone base connector and th...

A crystal oscillator which configures a voltage controlled oscillator having a variable oscillation frequency is also used as a crystal oscillator of an oscillator for generating a fixed frequency. Control input is integrated by an integrator, a phase of a frequency-divided signal obtained by dividing a fixed clock by a frequency divider is controlled by the integrated value to vary a frequency. Every time a phase-shifting amount at the time becomes to correspond to one clock, a frequency divisi...

Coated sodium percarbonate particles are provided which contain a sodium percarbonate core, and a coating layer substantially free from sulate, borate and magnesium compounds, having at least 30 and at most 75% w/w of an alkali metal carbonate and at least 25 and at most 70% w/w of an alkali metal silicate. The alkali metal carbonate and silicate being uniformly dispersed in the coating layer. Also provided is a process for the preparation of the coated sodium percarbonate particles and their us...

A plurality of methods for achieving the soft or softer handoff process such that the performance of a system is improved. A first method is based on delaying the softer handoff process. A second method is based on reducing the power of transmissions from the sector having the weakest signal strength. A third method is based on eliminating transmissions from the sector having the weakest signal strength. A fourth method adds a new base station or sector only when the mobile unit is in need of ad...