A phase alignment circuit in a serial transmitter aligns a parallel input data stream to a first transmission clock before conversion to a serial output data stream using a second transmission clock which is a multiple of the first transmission clock. The phase alignment circuit introduces less delay, i.e., the output of the phase alignment circuit lags the input of the phase alignment by a few number of clock cycles (e.g., less than 2 clock cycles). The phase alignment circuit demultiplexes the input data stream into a plurality of intermediate data streams using a plurality of multi-phase clocks referenced to a data clock and multiplexes the plurality of intermediate data streams using sequence signals referenced to the first transmission clock. The sequence signals are initialized according to a reset condition and at least one of the multi-phase clocks.

Phase alignment of data to clock

A waveform measurement and display apparatus comprises a pair of signal-processing channels in addition to a sweep generator arranged so as to provide both Y-T and X-Y display modes. A time marker generator system is provided to insert time markers into the same relative time positions of the respective Y-T and X-Y displays so as to precisely ascertain the time relationship between the two displays. Additionally, such time markers may be inserted into corresponding time positions for expanded and unexpanded waveforms in the Y-T display mode so as to precisely ascertain the relative time position therebetween.

Waveform measurement and display apparatus

The invention relates to phase detectors that integrate a portion of a transition between adjacent or consecutive bits of a serial bitstream in a relatively fixed window by switching currents as opposed to voltages. The phase detector can be used to synchronize a VCO clock in a PLL to a fast data bitstream used in an optical network, such as SONET. Advantageously, embodiments of a current mode phase detector switch currents, rather than voltages, to integrate the window of the serial bitstream. The current switching allows devices to operate at frequencies approaching the device's f T and can advantageously extend the phase detector's bandwidth and allow an associated transceiver to operate at higher data rates. By contrast, the conventional switching of voltage results in a delay induced by the charging of related capacitances, such as parasitic substrate capacitances, which in turn results in actual performance far below the f T of the devices.

Current mode phase detection

A moving goalie circuit is disclosed herein. The moving goalie circuit includes a first operational amplifier, having a linear feedback. A second operational amplifier is connected to the first operational amplifier. The second operational amplifier is an integrator. A relay is connected to the output of the second operational amplifier. The relay is selectively connectable to a timer for controlling position of a cursor or goalie image on a video screen. The first and second operational amplifiers produce a triangular wave which causes the timer to sweep repetitively the goalie image back and forth across a playing screen.

Moving goalie circuit for a manually controlled electronic video game

A method of displaying phase characteristics of a video signal is employed in a system that determines the phase angle between the color synchronization burst signal and horizontal synchronization pulses of a color video signal. The method includes selecting an image location on a display screen of video monitor and forming at the image location an image representing the value of the phase angle. The image is formed with a length along one axis passing through the image location and with a light intensity. One of the length or the light intensity is proportional to the value of the phase angle to provide an indication of the value.

Method of displaying video signal phase characteristics

A circuit for generating a marker, such as a stripe, on a television screen to measure a potential, such as a power supply or AGC voltage, features a Schmitt trigger circuit. This circuit has two inputs for the measured voltage and the horizontal flyback pulse. Another embodiment features two trigger circuits, with the second circuit receiving the vertical flyback and another measured voltage. The output of the second circuit blocks the first circuit.

circuit for generating video markers from potentials to be measured

A device for automatic adjustment of the inductance of a coil by utilizing a magnetic core which is formed by means of a magnetic paste. The device defines the quantity of magnetic paste in dependence on an inductance value measured by means of an inductance measuring apparatus.

Device for adjusting the inductance of a coil

DISPOSITIF AUTOMATIQUE DE REGLAGE D'INDUCTANCE PAR NOYAU MAGNETIQUE DELIVRE A L'ETAT PATEUX. LE DISPOSITIF ASSERVIT LA QUANTITE DE PATE MAGNETIQUE A LA VALEUR DESIREE D'INDUCTANCE MESUREE PAR UN INDUCTANCE-METRE. APPLICATION AU REGLAGE AUTOMATISE DE BOBINES MONTEES SUR DES PLATINES FI DE TELEVISION.

Raymond Salvy

Papers

circuit for generating video markers from potentials to be measured

Device for adjusting the inductance of a coil

Dispositif pour regler a une valeur determinee et definitive l'inductance d'une bobine munie d'un noyau magnetique