1. A video system, comprising:
at least one video signal source;
a video decoder, coupled to receive a video signal from the at least one video signal source, the video decoder comprising:
functional circuitry;
a common data port, coupled to the functional circuitry, for outputting a plurality of data streams from the common data port in an interleaved fashion; and
a clock generator for outputting a plurality of clock signals, each clock signal corresponding to one of the plurality of data streams output from the common data port;
a data bus, coupled to the common data port;
encoder circuitry, having a plurality of inputs coupled to the data bus, and having a plurality of clock inputs, each coupled to receive one of the plurality of clock signals;
wherein the encoder circuitry comprises:
a first encoder, having an input coupled to the data bus and having a clock input coupled to receive a first one of the plurality of clock signals, the first encoder for receiving a first one of the plurality of data streams synchronously with the first one of the plurality of clock signals; and
a second encoder, having an input coupled to the data bus and having a clock input coupled to receive a second one of the plurality of clock signals, the second encoder for receiving a second one of the plurality of data streams synchronously with the second one of the plurality of clock signals.
2. The video system of claim 1, further comprising:
a recording unit, coupled to the encoder circuitry, for recording video data corresponding to a first one of the plurality of data streams; and
a display unit, coupled to the encoder circuitry, for displaying a scaled image corresponding to a second one of the plurality of data streams.
3. The video system of claim 1, wherein the functional circuitry comprises:
interface circuitry for receiving at least one video input signal;
a first formatter, for formatting data corresponding to the video input signal according to a first image scaling, to generate a first one of the plurality of data streams; and
a second formatter, for formatting data corresponding to the video input signal according to a second image scaling, to generate a second one of the plurality of data streams.
4. The video system of claim 3, wherein the first image scaling is a 1:1 scaling.
5. A method of communicating digital data, comprising:
a common data port for outputting a plurality of data streams from the common data port in an interleaved fashion;
applying a word of a first data stream to conductors of a data bus;
generating an edge of a first clock signal, at a first clock terminal of an integrated circuit, synchronously with the applying of the word of the first data stream;
then applying a word of a second data stream to the conductors of the data bus;
generating an edge of a second clock signal, at a second clock terminal of the integrated circuit, synchronously with the applying of the word of the second data stream;
repeating the applying and generating steps;
after the step of applying a word of a second data stream, then applying a word of a third data stream to the conductors of the data bus;
generating an edge of a third clock signal, at a third clock terminal of the integrated circuit, synchronously with the applying of the word of the third data stream;
wherein the repeating step also repeats the steps of applying a word of a third data stream and generating an edge of a third clock signal.
6. The method of claim 5, wherein the first and second data streams correspond to video data.
7. The method of claim 6, further comprising:
receiving a video input signal;
formatting digital data corresponding to the video input signal according to a first image scaling; and
formatting digital data corresponding to the video input signal according to a second image scaling;
wherein the first data stream corresponds to the first image scaling, and the second data stream corresponds to the second image scaling.
8. The method of claim 7, wherein the first image scaling is 1:1.
9. The method of claim 5, wherein the first and second clock signals are at substantially the same frequency as one another.
10. The method of claim 5, wherein the first and second clock signals are at different frequencies from one another.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A reduction gear of an electric actuator for driving a home screen, the reduction gear comprising a reduction stage having a sun gear meshing with at least one planet gear rotating about a respective shaft and positioned in a drum, the planet gear meshing with a stationary ring to drive the drum in rotation about an axis of rotation, the reduction gear being characterized in that it further comprises first guide means serving both to guide the sun gear in rotation and to guide the drum in rotation about the axis of rotation.
2. A reduction gear according to claim 1, wherein second guide means serve likewise to guide the sun gear in rotation, the second guide means being received in the drum.
3. A reduction gear according to claim 1, wherein the first guide means are secured to the drum.
4. A reduction gear according to claim 1, wherein the first guide means includes both a bore, serving to guide the sun gear in rotation, and at least a radially-outer portion serving to guide the drum in rotation.
5. A reduction gear according to claim 1, wherein a portion of the guide means for the sun gear is located inside the drum.
6. A reduction gear according to claim 1, wherein the first guide means includes both a portion axially overlapping the drum and a portion projecting axially from the drum.
7. A reduction gear according to claim 1, wherein the maximum outside diameter of the first guide means is less than the maximum outside diameter of the drum.
8. A reduction gear according to claim 1, wherein the first guide means is a bushing.
9. A reduction gear according to claim 1, wherein the reduction stage is a simple compound planetary gearset (type II).
10. An electric tubular actuator for driving a home screen, wherein the actuator incorporates a reduction gear according to claim 1.