Abstract: A receiver is described including circuitry for deriving at least a first stream of first digitized samples from a received analog signal at a first sampling rate, circuitry for selecting a first sampling point and at least a second sampling point, a demodulator for demodulating first and second symbols from the at least first stream of samples based on the first and the at least second sampling points, and circuitry for determining a value related to a demodulation accuracy for the first and second symbols and for outputting a signal, the circuitry for selecting being adapted to alter the sampling point based on the signal. By assessing a demodulation accuracy in real time clock drift can be compensated. The demodulation accuracy can be a value related to a phase error or an error energy such as EVM or DEVM for each demodulated symbol.

Abstract: Method and apparatus for a wireless receiver are described which derive at least a first stream of first digitized samples from a received analog signal at a first sampling rate and identify a first frequency offset based on a plurality of parallel correlations using complex reference signals which differ from each other by phase offsets. A second frequency offset is identified based on tracking a demodulation accuracy for each symbol which is demodulated from the first stream of digitized samples. These frequency offsets can be used to rotate decision areas in the demodulator. The methods and apparatus may be used in a Bluetooth receiver.

Abstract: The thermally activated pressure relief valve (10) has a piston (14) normally retained in a closed position and being movable to an open position in case the valve (10) is exposed to an abnormally high temperature. An elastic slotted spring sleeve (20) is disposed within a sleeve (18) of fusible material. In a non-activated state the fusible sleeve (18) maintains the spring sleeve (20) in a radially compressed condition wherein it has a smaller inner diameter effective to retain the piston (14) in the closed position. When the fusible sleeve (18) melts the spring sleeve (20) radially expands to a larger diameter permitting movement of the piston to the open position wherein it is partly received in the spring sleeve (20).

Abstract: A tap for a gas or liquid cylinder is provided that comprises an inverted seat primary valve located in a main portion of a tap body and a secondary check valve spring biased into closed position and located below the lower end of a threaded section of a root end portion of the tap body. Both valves are actuated by an elongated stem extending from the main portion of the tap body into the root end portion. When the tap is fixed to a gas or liquid cylinder, the secondary check valve is located in the cylinder, thereby remaining operative when the tap body is sheared-off at a location where it extends out from a cylinder tap aperture.

Abstract: A receiver is described including circuitry for deriving at least a first stream of first digitized samples from a received analog signal at a first sampling rate, circuitry for selecting a first sampling point and at least a second sampling point, a demodulator for demodulating first and second symbols from the at least first stream of samples based on the first and the at least second sampling points, and circuitry for determining a value related to a demodulation accuracy for the first and second symbols and for outputting a signal, the circuitry for selecting being adapted to alter the sampling point based on the signal. By assessing a demodulation accuracy in real time clock drift can be compensated. The demodulation accuracy can be a value related to a phase error or an error energy such as EVM or DEVM for each demodulated symbol.

Abstract: Method and apparatus for a wireless receiver are described which derive at least a first stream of first digitized samples from a received analog signal at a first sampling rate and identify a first frequency offset based on a plurality of parallel correlations using complex reference signals which differ from each other by phase offsets. A second frequency offset is identified based on tracking a demodulation accuracy for each symbol which is demodulated from the first stream of digitized samples. These frequency offsets can be used to rotate decision areas in the demodulator. The methods and apparatus may be used in a Bluetooth receiver.

Abstract: A tap for a gas cylinder is provided with a position indicator comprising a cylindrical skirt disposed about a cylindrical support member. The skirt is coupled to an actuating wheel of the tap for rotation therewith and for displacement axially with respect to the actuating wheel along the longitudinal axis of the tap. The support member is mounted on the tap body and, in normal operation of the tap, it is retained in fixed position with respect to the tap body. The skirt has an internal screw thread engaging an externally threaded portion of the support member. In closed position of the tap the skirt masks a signaling portion of the support member. When the actuating wheel is rotated to open the tap the skirt is displaced in a direction to uncover the signaling portion to indicate the open position of the tap. The signaling portion may be colored, for example in red.

Abstract: A gas tank valve comprises a wheel handle mounted on a control stem. The wheel handle can be displaced on the control stem in the direction of the longitudinal axis of the stem between a first position, in which the wheel handle is coupled to the stem, with a view to activating it, and a second, uncoupled position, in which the wheel can turn freely on the stem without causing rotational movement of the stem.

Abstract: A tap for a gas or liquid cylinder is provided that comprises an inverted seat primary valve located in a main portion of a tap body and a secondary check valve spring biased into closed position and located below the lower end of a threaded section of a root end portion of the tap body. Both valves are actuated by an elongated stem extending from the main portion of the tap body into the root end portion. When the tap is fixed to a gas or liquid cylinder, the secondary check valve is located in the cylinder, thereby remaining operative when the tap body is sheared-off at a location where it extends out from a cylinder tap aperture.

Abstract: An integrated circuit (IC1) comprising functional logic (1) and Flash-EEPROM (2) coupled, via mixing devices (IMUX, OMUX), to connection pads (CP1, CP2), which are arranged into pad arrangements (PAD: PAD1, PAD2, PAD3, PAD4). Each pad arrangement (PAD) comprises two juxtaposed connection pads (CP1, CP2) interconnected electrically and having substantially the same design. In this way, many “probings” are possible on a same pad arrangement, while probing at most two times each connection pad thereof. By probing at most two times on a connection pad, a good “bondability” of the pad is assured. This is particularly useful in the present case of combined functional logic and the Flash-EEPROM where three probings are generally required for the flash test of the EEPROM, the digital test of the functional logical and the analog test of the latter.

Abstract: A circuit is provided for multiplexing data packets, each having sets of n digital words and a residual set of r digital words. The multiplexing arrangement includes an output terminal (OUT), input memory units (RAM0-RAM3) each to receive and to store the data packets in memory portions and each to store n digital words, and a multiplexer (MUX) coupled to the input memory units (RAM0-RAM3) and to transfer the data packets thereof to the output terminal (OUT). The circuit also includes a register (RGN) and a residual register (RGR), each connected in parallel to the input memory units (RAM0-RAM3). The register (RGN) reads and transfers the sets of n digital words to the multiplexer (MUX). The residual register (RGR) reads and transfers the residual set of r digital words to the multiplexer (MUX). The multiplexer (MUX) combines the set of n digital words and the residual set of r digital words, forming a combined set, and providing at least a portion of the combined set to the output terminal (OUT).

Abstract: Synchronization with an incoming digital signal is timed at a midpoint of the incoming bits by selecting a fine sampling interval that is smaller than the transition period between bits and taking plural adjacent samples, e.g., three samples at the fine sampling interval in a sampling period greater than two bit periods and determining if all the samples were taken from the same bit. If not, either a leftmost or rightmost sample must be unequal to the other samples and the relative timing or phase of the plural samples are shifted right or left in the next sampling period, in a direction opposite from the detected unequal sample, and plural fine samples are again taken, beginning at the newly shifted point.

Abstract: An asynchronous timing or control circuit (TIM) for a RAM memory applies a row selection (ROWD) signal to one end (WIO/WIN) of a selected memory row (WORDO/WORDN) and a corresponding control signal (WOO/WON) is collected at the other end (WOO/WON) of this row through a common NOR gate (04) with an input for each row. Since this control signal reflects the propagation time of a signal through the row, it is used to control the precharging (PRECHB) of the memory columns prior to any subsequent read or write operation, the latter using the same row selection signal.