Led display device and method for controlling the same

A light emitting diode display device comprising:

• a computer for generating analogue display data, horizontal synchronizing signals, and vertical synchronizing signals;
• a timing controller connected to said computer for receiving said horizontal synchronizing signals and said vertical synchronizing signals;
• an interface directly connected to said timing controller and said computer for outputting said analogue display data, said horizontal synchronizing signals, vertical synchronizing signals, a clock signal and an enable signal;
• a buffer connected to said interface;
• and
• a module panel connected to said buffer, said module panel including a plurality of light emitting diode units arranged in parallel with each unit further comprising:
• a matrix circuit of light emitting diodes having plural diodes connected together to form individual rows with corresponding diodes in each row connected in a direction orthogonal to the rows to form plural columns,
• a row driver having a different output connected to each row of diodes in the matrix circuit,
• a sample and hold circuit connected to supply inputs to said row driver relative to sampled and held analog display data received from analogue switch connected to the interface through the buffer;
• and
• wherein the analog switch and the sample and hold circuit are controlled by the clock signal, the horizontal synchronizing signals, and the enable signal provided from the interface.

A method of controlling a display device comprising the steps of:

• receiving analogue data from an external source;
• selecting analogue display data portions for display on a light emitting diode matrix circuit having the light emitting diodes arranged in a matrix of rows having corresponding light emitting diodes in each row connected in a direction orthogonal to a row connection direction to form plural columns;
• sample-holding the selected analogue display data for the respective rows;
• driving and controlling light emitting diodes on respective rows based on the analogue display data being sample-held;
• and
• applying a driving signal to at least a selected column of light emitting diodes having at least one light emitting diode in common with at least one of the respective rows to obtain a display.