U.S. Philips Corporation

Nxp B.v.

James J McCormack

Nicolaas Lambert

Franciscus A Schoofs

Dirk J Teuling

Terence Doyle

Jeroen H Stessen

Jo Frisson

Steven H De Cuyper

Davy Witters

The present invention provides for method of seeking synchronization at a data interface between a transmitting element and a receiving element, and to related transmitting and receiving elements of the interface, in which the clock frequency of both elements is the same but which exhibit a phase difference, also known as mesochronous clock domains, the method including the steps of, prior to data transfer at the interface, delivering a strobe signal generated at the transmitting element to the receiving element, generating a strobe signal at the receiving element and synchronizing the same to the strobe signal received from the transmitting element, and maintaining the synchronized strobe signal generated at the receiving element for the sampling of data appearing at the interface from the transmitting element.

Data interface and method of seeking synchronization

Picture display device comprising a plurality of electron transport ducts or transporting electrons in the form of electron currents, and selection electrodes for withdrawing each electron current at predetermined locations from its transport duct and for directing said current towards a luminescent screen. The selection electrodes are driven by a selection driver comprising integrated driver circuits having outputs which are DC-coupled to the selection electrodes and are cascaded as regards their power supply voltages in such a way that they apply both selection pulses and transport (bias) voltage to the selection electrodes.

Picture display and selection driver and integrated driver circuit for

A display device often includes a correction circuit for correcting a position error which is caused by the fact that the deflection signals are not (any longer) in conformity with the video signals to be displayed. This is caused, inter alia by the fact that the deflection coils and the display tube are not ideal. By providing the display device with a waveform generator generating a (line deflection) reference signal and by causing this reference signal to traverse the same 'signal path' as the video signal, variations in the delay etc. can be corrected. Both the video signal and the reference signal are stored in a memory and read from the memory under the control of the correction circuit. Inputs of the correction circuit receive the (line deflection) reference signal delayed via the memory and a signal related to the (real) line deflection. With reference to these input signals, the correction circuit applies a (read) clock signal to the memory. As a result, deflection signals and video signals are always in conformity with each other.

Display device including a correction circuit for correcting a position

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Eindhoven, Netherlands

James J McCormack