Motorola Corporation

David T Jobling

Anthony D Newton

Pascal Leclercq

Laurent Tran

Olivier Pilloud

A data receiver is arranged to receive data comprising a sync word having a predetermined data frequency (f.sub.tx) and predetermined value. A clock signal (SCLK) is generated which is substantially synchronised with the received data. The n clocks (CLK1-CLK8) are generated, each of the n clocks having a frequency (fclk) which is substantially the predetermined data frequency (f.sub.tx) and is out of phase with an adjacent clock of the n clocks by 1/n of a clock period. The sync word is sampled using each of the n clocks to determine which one of the n clocks is optimally synchronised with the sync word and to provide the determined one of the n clocks at an output (18). The determined one of the n clocks provides the clock signal (SCLK).

Method for generating a clock signal for use in a data receiver, clock

An amplifier circuit is described comprising a transconductance amplifier in series with a voltage gain stage. A compensation capacitance coupled across the voltage gain stage includes a capacitance whose value is dependent upon the output voltage of the voltage gain stage so as to optimize amplifier stability over a wide range of output voltages.

Amplfier circuit

A timebase circuit for use in the vertical timebase of a television receiver in which a linearity control current fed to the ramp capacitor is derived by multiplying a current proportional to the difference between the instantaneous and average ramp voltages by a reference current which may be adjusted to control linearity.

Timebase circuit

A timebase circuit is described, for compensation of picture dimensions of a television type display, for EHT fluctuations in which a control current is derived by multiplying a current dependent upon the picture beam current with a reference current derived from a digital to analogue converter fed with a digital code.

A timebase circuit is described for providing a horizontal drive correction waveform to correct for pincushion distortion in which a parabolic correction current is derived by squaring a current proportional to the difference between the instantaneous and average values of the vertical ramp voltage. The correction current may be tilted by combination with a linear current proportional to the ramp voltage and may also be amplitude controlled.

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Geneva, Switzerland

David T Jobling