Display device using single liquid crystal display panel

Claim 3

The method of claim 1 , with the color data signals comprising a red signal, blue signal, and green signal.

Claim 4

The method of claim 1 , further comprising the step of transmitting said output color components to project the image onto a screen through a single liquid crystal display panel.

Claim 5

The method of claim 3 , with the color data signals comprising a red signal, blue signal, and green signal.

Claim 6

The method of claim 1 , further comprising the step of transmitting said output color components to project the image onto a screen through a single ferroelectric liquid crystal panel.

Claim 7

The method of claim 5 , with the vector value in said step of determining the compensation value comprising a product of a value of luminance of one of the color data signals, a scale constant, and second value, said second value being a quotient of one of the color data signals and square root of a sum of the squares of each color data signal.

Claim 8

The method of claim 1 , further comprising the step of determining a value of luminance among each one of the color data signals.

Claim 9

The method of claim 7 , with the vector value in said step of determining the compensation value comprising a product of said value of luminance, a scale constant, and a second value, said second value being a quotient of one of the color data signals and square root of a sum of the squares of each color data signal.

Claim 10

The method of claim 8 , with said scale constant set according to the characteristics of the image processing apparatus.

Claim 11

The method of claim 8 , with said scale constant having a value within a range between approximately 1 and square root of 3.

Claim 12

The method of claim 7 , with said step of determining the value of luminance comprising calculating a minimum among each one of the color data signals.

Claim 13

The method of claim 7 , with said step of determining the value of luminance comprising calculating a mean among each one of the color data signals.

Claim 14

The method of claim 1 , with the plurality of color data signals divided over time in a single digital signal.

Claim 15

The method of claim 1 , further comprising the step of outputting the output color components with the achromatic signal divided over time in a single digital signal, said digital signal being used by an optical engine to project the image onto a screen.

Claim 16

The method of claim 14 , with said optical engine comprising at least one liquid crystal display panel or ferroelectric liquid crystal display panel.

Claim 17

The method of claim 1 , with the vector value in said step of determining the compensation value comprising a product of a value of luminance, a scale constant, and a second value, said second value being a quotient of one of the color data signals and square root of a sum of the squares of each color data signal.

Claim 18

The method of claim 1 , further comprising the step of transmitting said output color components to project the image onto a screen through a single one of a liquid crystal display panel and a ferroelectric liquid crystal panel.

Claim 19

The method of claim 17 , further comprising the step of determining a value of luminance among each one of the color data signals.

Claim 20

The method of claim 18 , with the vector value in said step of determining the compensation value comprising a product of said value of luminance, a scale constant, and a second value, said second value being a quotient of one of the color data signals and square root of a sum of the squares of each color data signal.

Claim 21

The method of claim 19 , with said scale constant set according to the characteristics of the image processing apparatus.

Claim 22

The method of claim 20 , with said scale constant having a value within a range between approximately 1 and square root of 3.

Claim 23

The method of claim 21 , with said step of determining the value of luminance comprising calculating a minimum among each one of the color data signals.

Claim 24

The method of claim 21 , with said step of determining the value of luminance comprising calculating a mean among each one of the color data signals.

Claim 27

The apparatus of claim 24 , with the output color data signals including a red signal, a green signal and a blue signal and with said optical engine having a single liquid crystal display panel, said liquid crystal display panel displaying the image by transmitting incident light corresponding to the data of the red signal, green signal, blue signal, and achromatic signal.

Claim 28

The apparatus of claim 25 , with said format conversion unit determining a value of luminance among each one of the red signal, green signal, and blue signal, said format conversion unit determining vector values of each one of the red signal, green signal, and blue signal, said conversion unit determining an initial minimum value among each said vector value, said format conversion unit setting a first value of an achromatic signal to have said initial minimum value among each said vector value, said format conversion unit determining a compensation value for each one of the red signal, green signal, and blue signal by summing one of the red signal, green signal, or blue signal with the respective one of said vector values, said format conversion unit determining output color components by subtracting said first value from said compensation value for each one of the red signal, green signal, and blue signal.

Claim 29

The apparatus of claim 25 , said format conversion unit determining a compensation value for each one of said red, green, and blue signals by summing each of said red, green, and blue signals with vector values of each one of said red, green, and blue signals.

Claim 30

The apparatus of claim 24 , with the output color data signals including a red signal, a green signal and a blue signal and with said optical engine having a single reflective ferroelectric display panel, said ferroelectric display panel displaying the image by reflecting incident light corresponding to a data value input to the data line of said reflective ferroelectric display panel.

Claim 31

The apparatus of claim 28 , with said format conversion unit determining a value of luminance among each one of the red signal, green signal, and blue signal, said format conversion unit determining vector values of each one of the red signal, green signal, and blue signal, said conversion unit determining an initial minimum value among each said vector value, said format conversion unit setting a first value of an achromatic signal to have said initial minimum value among each said vector value, said format conversion unit determining a compensation value for each one of the red signal, green signal, and blue signal by summing one of the red signal, green signal, or blue signal with the respective one of said vector values, said format conversion unit determining output color components by subtracting said first value from said compensation value for each one of the red signal, green signal, and blue signal.

Claim 32

The apparatus of claim 28 , said format conversion unit determining a compensation value for each one of said red, green, and blue signals by summing each of said red, green, and blue signals with vector values of each one of said red, green, and blue signals.

Claim 33

The apparatus of claim 24 , with the output color data signals including a red signal, a green signal and a blue signal and with said optical engine comprising: an optical source producing light and a reflective mirror reflecting light emitted from the light source to guide and radiate the light; a collimating lens focusing the light radiated from the optical source into a collimated light; a color switching unit receiving the collimated light from said collimating lens and sequentially switching and outputting the red light, green light, blue light, and white light at intervals of a certain period during one vertical period according to a color switching control signal received from said timing control unit; and a ferroelectric display panel reflecting the incident light from said color switching unit according to the red signal, green signal, blue signal, and achromatic signal applied by said format conversion unit, the reflected incident light forming the image.

Claim 34

The apparatus of claim 31 , with said format conversion unit determining a value of luminance among each one of the red signal, green signal, and blue signal, said format conversion unit determining vector values of each one of the red signal, green signal, and blue signal, said conversion unit determining an initial minimum value among each said vector value, said format conversion unit setting a first value of an achromatic signal to have said initial minimum value among each said vector value, said format conversion unit determining a compensation value for each one of the red signal, green signal, and blue signal by summing one of the red signal, green signal, or blue signal with the respective one of said vector values, said format conversion unit determining output color components by subtracting said first value from said compensation value for each one of said red signal, green signal, and blue signal.

Claim 35

The apparatus of claim 31 , said format conversion unit determining a compensation value for each one of said red, green, and blue signals by summing each of said red, green, and blue signals with vector values of each one of said red, green, and blue signals.

Claim 36

The apparatus of claim 24 , with said optical engine comprising: an optical source producing light and a reflective mirror reflecting light emitted from the light source to guide and radiate the light; a collimating lens focusing the light radiated from the optical source into a collimated light; a color switching unit receiving the collimated light from said collimating lens and sequentially switching and outputting a plurality of color light at intervals of a certain period during one vertical period according to a color switching control signal received from said timing control unit; and a liquid crystal display panel transmitting the incident light from said color switching unit according to the output color data signals, and achromatic signal applied by said format conversion unit, the transmitted incident light forming the image.

Claim 37

The apparatus of claim 24 , said format conversion unit determining a compensation value for each one of the generated color data signals by summing each of the generated color data signals with vector values of each one of the generated color data signals.

Claim 42

The apparatus of claim 37 , said format conversion unit determining a compensation value for each one of said red, green, and blue signals by summing each of said red, green, and blue signals with vector values of each one of said red, green, and blue signals.

Claim 45

The method of claim 39 , further comprising the step of transmitting said output color components with the achromatic signal to display an image on a screen through a single liquid crystal display panel.

Claim 46

The method of claim 40 , with the vector value in said step of determining the compensation value comprising a product of said value of luminance, a scale constant, and a second value, said second value being a quotient of one of said red signal, green signal, or blue signal and square root of a sum of the squares of red signal, green signal, and blue signal.

Claim 47

The method of claim 41 , with said scale constant set according to the characteristics of the image processing apparatus.

Claim 48

The method of claim 42 , with said scale constant having a value within a range between approximately 1 and square root of 3.

Claim 49

The method of claim 43 , with said step of determining said value of luminance comprising calculating a minimum among each one of the red signal, green signal, and blue signal.

Claim 50

The method of claim 44 , with said step of determining said value of luminance comprising calculating a mean among each one of the red signal, green signal, and blue signal.

Claim 51

The method of claim 39 , further comprising the step of transmitting said output color components to project an image on a screen through a single ferroelectric liquid crystal panel.

Claim 52

The method of claim 39 , with said step of determining a compensation value comprising a product of said value of luminance, a scale constant, and a second value, said second value being a quotient of one of said red signal, green signal, or blue signal and square root of a sum of the squares of red signal, green signal, and blue signal.

Claim 53

The method of claim 47 , with said scale constant set according to the characteristics of the image processing apparatus.

Claim 54

The method of claim 48 , with said step of determining said value of luminance comprising calculating a minimum among each one of the red, green, and blue signals.

Claim 55

The method of claim 48 , with said step of determining said value of luminance comprising calculating a mean among each one of the red, green, and blue signals.

Claim 56

The method of claim 47 , with said scale constant having a value within a range between approximately 1 and square root of 3.

Claim 57

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a predetermined arithmetic algorithm, Ro, Go, Bo being compensated for in a transition in a vector direction of W; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of a display panel control signal.

Claim 58

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a predetermined arithmetic algorithm, Ro, Go, Bo being compensated for in a transition in a vector direction of W; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of a display panel control signal.

Claim 59

The display device using a single liquid crystal display panel of claim 52 , with the optical engine comprising: an optical source generating and projecting light; a collimating lens focusing light projected by the optical source into parallel light or focusing light; a color switching unit receiving light from the collimating lens and sequentially switching and outputting signals R, G, B and W during one vertical period; a liquid crystal display panel for receiving light from the color switching unit and transmitting incident light in accordance with the signals Ro, Go, Bo and W applied to the data lines of each cell formed as a matrix, under the control of the display panel control signal to display an image; and a projection lens magnifying the light transmitted by the liquid crystal display panel and projecting the magnified light toward the screen.

Claim 60

The display device using a single liquid crystal display panel of claim 53 , with the color switching unit equally switching and outputting each of the signals R, G, B and W at intervals of one quarter of a vertical period during one vertical period.

Claim 61

The display device of claim 53 , said format conversion unit determining a compensation value for each one of the received signals by summing each one of the received signals with vector values of each one of the received signals.

Claim 62

The display device using a single liquid crystal display panel of claim 52 , with the optical engine comprising: an optical source generating and projecting light; a collimating lens focusing light projected by the optical source into parallel light or focusing light; a color switching unit receiving light from the collimating lens and sequentially switching and outputting signals R, G, B and W during one vertical period; a polarized beam splitter transmitting light received from the color switching unit or reflecting the light to change the direction of travel of the incident light, according to the polarization of the light; a ferroelectric liquid crystal panel installed on the path of light transmitted or reflected by the polarized beam splitter, for reflecting incident to the polarized beam splitter light in accordance with the signals Ro, Go, Bo and W applied to the data lines of each cell formed as a matrix, under the control of the display panel control signal to display an image; and a projection lens magnifying the light reflected by the ferroelectric liquid crystal panel and passed through the polarized beam splitter, the projection lens projecting the magnified light toward the screen.

Claim 63

The display device using a single liquid crystal display panel of claim 56 , with the color switching unit equally switching and outputting each of the signals R, G, B and W at intervals of one quarter of a vertical period during one vertical period.

Claim 64

The display device of claim 56 , said format conversion unit determining a compensation value for each one of the received signals by summing each one of the received signals with vector values of each one of the received signals.

Claim 65

The display device using a single liquid crystal display panel of claim 52 , with the predetermined arithmetic algorithm comprising: obtaining a value IncY corresponding to the average value of received signals Ri, Gi and Bi; calculating Ri, Gi and Bi unit vector components from the received signals, and multiplying each of the Ri, Gi and Bi unit vector components by the product of the value IncY and a predetermined scale value to obtain a vector R value, a vector G value, and a vector B value; determining the minimum value among the vector R value, the vector G value, and the vector B value, as the magnitude value of an achromatic color (W); and adding the vector R value, the vector G value, and the vector B value to the received signals Ri, Gi and Bi, respectively, and subtracting the magnitude value of the achromatic color W from each of the vector R value, the vector G value, and the vector B value to generate signals Ro, Go, Bo and W.

Claim 66

The display device using a single liquid crystal display panel of claim 59 , with the predetermined scale value being set within a range between approximately 1 to square root of 3.

Claim 67

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi corresponding to one vertical period and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a display panel control signal and a predetermined arithmetic algorithm, at intervals of one vertical period; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of the display panel control signal, with the predetermined arithmetic algorithm comprising: obtaining a value IncY corresponding to the minimal value among received signals, Ri, Gi and Bi; calculating Ri, Gi and Bi unit vector components from the received signals, and multiplying each of the Ri, Gi and Bi unit vector components by the product of the value IncY and a predetermined scale value to obtain a vector R value, a vector G value, and a vector B value; determining the minimum value among the vector R value, the vector G value, and the vector B value, as the magnitude value of an achromatic color (W) signal; and adding the vector R value, the vector G value, and the vector B value to the received signals Ri, Gi and Bi, respectively, and subtracting the magnitude value of the achromatic color signal from each of the vector R value, the vector G value, and the vector B value to generate signals Ro, Go, Bo and W.

Claim 68

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi corresponding to one vertical period and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a display panel control signal and a predetermined arithmetic algorithm, at intervals of one vertical period; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of the display panel control signal, with the predetermined arithmetic algorithm comprising: obtaining a value IncY corresponding to the minimal value among received signals, Ri, Gi and Bi; calculating Ri, Gi and Bi unit vector components from the received signals, and multiplying each of the Ri, Gi and Bi unit vector components by the product of the value IncY and a predetermined scale value to obtain a vector R value, a vector G value, and a vector B value; determining the minimum value among the vector R value, the vector G value, and the vector B value, as the magnitude value of an achromatic color (W) signal; and adding the vector R value, the vector G value, and the vector B value to the received signals Ri, Gi and Bi, respectively, and subtracting the magnitude value of the achromatic color signal from each of the vector R value, the vector G value, and the vector B value to generate signals Ro, Go, Bo and W.

Claim 69

The display device using a single liquid crystal display panel of claim 61 , with the predetermined scale value being set within a range between 1 to square root of 3.

Claim 74

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi corresponding to one vertical period and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a display panel control signal and a predetermined arithmetic algorithm, at intervals of one vertical period said format conversion unit determining a compensation value for each one of the received signals by summing each one of the received signals with vector values of each one of the received signals; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of the display panel control signal.

Claim 75

A display device using a single liquid crystal display panel, the device comprising: a format conversion unit receiving signals Ri, Gi and Bi corresponding to one vertical period and generating signals Ro, Go, Bo and W, which have been compensated for in a loss in color saturation using a display panel control signal and a predetermined arithmetic algorithm, at intervals of one vertical period said format conversion unit determining a compensation value for each one of the received signals by summing each one of the received signals with vector values of each one of the received signals; and an optical engine sequentially outputting four color signals to a screen in accordance with the signals Ro, Go, Bo and W output from the format conversion unit, under the control of the display panel control signal.