System and method for using compound data words to reduce the data phase difference between adjacent pixel electrodes

A display driver circuit for writing a compound data word to a display pixel, said compound data word comprising a first group of data bits and a second group of data bits, said display driver circuit comprising:

• a compound data generator configured to provide, at an output, said compound data word;
• and
• an output controller configured to provide display control signals, said display control signals causing each bit of said first group of data bits to be asserted on said display pixel for a coequal time period, and causing each bit of said second group of data bits to be asserted on said display pixel for a differing time period dependent on an associated significance of each said bit;
• and wherein,
• said compound data generator includes an input terminal for receiving a binary-weighted data word, said compound data word is generated in response to receipt of said binary-weighted data word, and said compound data generator is configured to convert at least one bit of said binary-weighted data word to said first group of bits of said compound data word.

A method for asserting a compound data word on a display pixel, said compound data word corresponding to a particular pixel value and including a first group of bits and a second group of bits, said method comprising the steps of:

• receiving a data word of a first type;
• generating said compound data word from said data word of said first type by converting at least one bit of said data word of said first type into said first group of data bits, and including at least one other data bit of said data word of said first type in said second group of data bits;
• asserting each said bit of said first group of bits on said display pixel for a coequal time period;
• and
• asserting each bit of said second group of bits on said display pixel for a differing time period dependent on an associated significance of each said bit,
• whereby an output of said pixel corresponds to said value of said compound data word.

A method for asserting a compound data word on a display pixel, said compound data word corresponding to a particular pixel value and including a first group of bits and a second group of bits, said method comprising the steps of:

• receiving a binary-weighted data word;
• generating said compound data word from said binary-weighted data word, said step of generating said compound data word from said binary-weighted data word comprising the step of converting at least one bit of said binary-weighted data word into said first group of bits of said compound data word;
• asserting each said bit of said first group of bits on said display pixel for a coequal time period;
• and
• asserting each bit of said second group of bits on said display pixel for a differing time period dependent on an associated significance of each said bit,
• whereby an output of said pixel corresponds to said value of said compound data word.

A method for generating a compound data word comprising the steps of:

• receiving a data word of a first type;
• providing a first group of data bits, said bits of said first group being of like significance with respect to each other, and being generated from a first subset of data bits of said data word of said first type;
• and
• providing a second group of data bits, said bits of said second group differing in significance with respect to each other, and being a second subset of data bits of said data word of said first type.

A method for generating a compound data word comprising the steps of:

• receiving a binary-weighted data word;
• providing a first group of data bits, said bits of said first group being of like significance with respect to each other;
• and
• providing a second group of data bits, said bits of said second group differing in significance with respect to each other;
• and wherein;
• at least one of said first group of data bits and said second group of data bits are provided in response to receipt of said binary-weighted data word;
• and
• said step of providing said first group of data bits comprises converting at least one bit of said binary-weighted data word into said first group of bits.

A projector comprising:

• a display including a plurality of pixels;
• and
• a driver circuit, coupled to said display, for writing a compound data word to said display, said compound data word comprising a first group of data bits and a second group of data bits, said driver circuit comprising
• a compound data word generator configured to receive a data word of a first type, to convert at least one bit of said data word of said first type into said first group of data bits, to include at least one other bit of said data word of said first type in said second group of data bits, and to provide said compound data word at an output;
• and
• an output controller configured to provide display control signals, said display control signals causing each bit of said first group of data bits to be asserted on one of said pixels for a coequal time period, and causing each bit of said second group of data bits to be asserted on said one of said pixels for a time period dependent on an associated significance of each said bit.