Patent ID: 11956872
Assignee: TLI INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A pulse width modulator comprising:
a data storing part that stores display data; and
a pulse width modulating part that receives the display data provided from the data storing part, and generates a modulation signal with modulating the display data during a unit frame, wherein an activation width of the modulation signal corresponds to a data value of the display data, wherein
the unit frame includes 1-st to n-th subframes which are sequentially progressed,
each of the 1-st to n-th subframes is a number ‘p’ of unit times,
each of the unit times corresponds to a corresponding unit data value of the display data,
the activation width of the modulation signal in the i-th subframe is associated with whether an integer value of an estimated cumulative error of the i-th subframe is equal to the integer value of the estimated cumulative error of the (i−1)-th subframe,
the estimated cumulative error of the i-th subframe is defined by {(i*r+e)/n},
‘n’ is a natural number greater than or equal to ‘4’,
‘p’ is a natural number greater than or equal to ‘2’,
‘i’ is a natural number between ‘1‘ and’n’,
‘r’ is a remainder obtained by dividing the data value of the display data by ‘n’,
‘r’ is an integer between ‘0‘ and’(n−1)’, and
‘e’ is an arbitrary number.