Pulse signal generator and display device

A display device comprising:

• plural display elements;
• one or more pulse signal generators that generate plural pulse strings for driving said display elements;
• and a control means that generates a pulse string with its pulse interval set corresponding to a desired pulse width of said pulse signal, and a pulse assignment signal that assigns the prescribed pulse in said input pulse string for each said pulse signal to be generated, and sends said signals to said pulse signal generators;
• wherein said pulse signal generator comprises:
• a pulse arrival notification means that reports the arrival of the pulse, which is contained in the input pulse string and which is input when an enable signal indicating permission for pulse input is given, together with the information that specifies said pulse;
• a pulse arrival judgment means, which uses the pulse assignment signals corresponding to said pulse signals to be generated as input, and which determines whether a pulse assigned with each of said pulse assignment signals has arrived for each of said pulse signals on the basis of the notification of said pulse arrival notification means;
• and a pulse signal output means that inverts the output level of the pulse signal, for which arrival of said assigned pulse is judged by said pulse arrival judgment means, synchronously with the arrival of said pulse.

A pulse signal generator comprising:

• a pulse signal generator is used to control a logic level of an output pulse signal corresponding to arrival of a pulse signal;
• wherein the pulse signal generator comprises a pulse assignment signal holding circuit that holds a pulse assignment signal for assigning one pulse signal in a pulse string supplied during a prescribed period as a response to an initialization signal,
• a counting circuit, which resets a count value at a prescribed value as a response to said initialization signal, and which increments or decrements said count value corresponding to input of said pulse signal,
• a comparator that compares a value of the pulse assignment signal held in said pulse assignment signal holding circuit with said count value of said counting circuit;
• and a pulse signal output circuit that controls a logic level of said output pulse signal in response to a comparison result signal output from said comparator.