초록 ▼

A digital cinema projector (100) for projection of color images onto a display surface comprises a light source (116), which produces a beam of light. Beam-shaping optics (130) homogenize and focus the beam of light and color splitting optics (132) separate focus beam of light into separate color be

A digital cinema projector (100) for projection of color images onto a display surface comprises a light source (116), which produces a beam of light. Beam-shaping optics (130) homogenize and focus the beam of light and color splitting optics (132) separate focus beam of light into separate color beams. A first modulation optics system comprises a prepolarizer (212), which prepolarizes a first color beam; a wire grid polarization beamsplitter (224), which transmits a first predetermined polarization state of the prepolarized beam; a reflective spatial light modulator (204), which alters the transmitted prepolarized beam with information and reflects the image bearing first color beam through the wire grid polarization beamsplitter (224); and a wire grid polarization analyzer (228), which transmits the image bearing first color beam and attenuates unwanted polarization components. A recombination prism (232) combines the first color beam from the first modulation optical system with other image bearing color beams to create a full color image bearing beam. A projection lens system (150) projects the full color image bearing beam onto the display surface (140).

대표청구항 ▼

A digital cinema projector (100) for projection of color images onto a display surface comprises a light source (116), which produces a beam of light. Beam-shaping optics (130) homogenize and focus the beam of light and color splitting optics (132) separate focus beam of light into separate color be

A digital cinema projector (100) for projection of color images onto a display surface comprises a light source (116), which produces a beam of light. Beam-shaping optics (130) homogenize and focus the beam of light and color splitting optics (132) separate focus beam of light into separate color beams. A first modulation optics system comprises a prepolarizer (212), which prepolarizes a first color beam; a wire grid polarization beamsplitter (224), which transmits a first predetermined polarization state of the prepolarized beam; a reflective spatial light modulator (204), which alters the transmitted prepolarized beam with information and reflects the image bearing first color beam through the wire grid polarization beamsplitter (224); and a wire grid polarization analyzer (228), which transmits the image bearing first color beam and attenuates unwanted polarization components. A recombination prism (232) combines the first color beam from the first modulation optical system with other image bearing color beams to create a full color image bearing beam. A projection lens system (150) projects the full color image bearing beam onto the display surface (140). is a threshold information showing a threshold according to a capacity of ink which may be contained in said ink cartridge. 8. A printing apparatus comprising: a cartridge mount on which a first ink cartridge and a second ink cartridge are detachably mountable, said first ink cartridge having a first memory, and said second cartridge having a second memory; and a control circuit that determines a first discharge amount of ink discharged from said first ink cartridge and that determines a second discharge amount of ink discharged from said second ink cartridge; wherein said control circuit selects said first ink cartridge or said second ink cartridge based on at least one of said discharge amount and said second discharge amount, wherein, when said control circuit selects said first ink cartridge, said control circuit causes information to be written to said first memory, and wherein, when said control circuit selects the first ink cartridge, information is not written to said second memory. 9. A printing apparatus according to claim 8, wherein said information written to said first memory comprises a used amount or residual quantity of ink contained in said first ink cartridge. 10. A printing apparatus according to claim 10, wherein, when said control circuit causes said information to be written to said first memory and not to be written to the second memory, a value of said first discharge amount is adjusted and a value of said second discharge amount is not adjusted. 11. A printing apparatus according to claim 8, wherein said control circuit communicates with said first memory, in a noncontact state, when said cartridge mount is at a predetermined position. 12. A printing apparatus according to claim 8, wherein said control circuit selects said first ink cartridge when said first discharge amount reaches a first predetermined value. 13. A printing apparatus according to claim 12, wherein said first predetermined value for said first ink cartridge is established according to an ink capacity of said first ink cartridge. 14. A printing apparatus according to claim 12, further comprising: a first writing member for writing information to said first memory: wherein, when said first ink cartridge moves in a direction away from said writing member, said information is not written to said first memory, and wherein, when said first ink cartridge moves in a direction towards said writing member, said information is written to said first memory. 15. A printing apparatus according to claim 12, wherein said first memory stores first timing information for determining a writing timing of said information relating to a capacity of ink in said first ink cartridge, and wherein said first predetermined value is set according to said first timing information. 16. A printing apparatus according to claim 15, wherein said first timing information comprises capacity information relating to an ink capacity of said first ink cartridge, and wherein said first predetermined value is set according to said capacity information. 17. A printing apparatus according to claim 12, wherein said first memory stores first timing information for determining a writing timing of said information relating to a capacity of ink in said first ink cartridge, and wherein said first predetermined value is set according to said first timing information. 18. A printing apparatus according to claim 8, wherein said first memory stores first timing information for determining a writing timing of said information relating to a used amount or residual quantity of said first ink cartridge, and wherein said first predetermined value is set according to said first timing information. 19. A printing apparatus according to claim 18, wherein said first timing information comprises capacity information relating to an ink capacity of said first ink cartridge, and wherein said first predetermined value is set according to said capacity informatio n. 20. A printing apparatus according to claim 19, wherein said first ink cartridge is moveable from a printing region to a writing position at which said information is written to said first memory and to a flushing position at which said flushing operation is performed; wherein said writing position is located between said printing region and said flushing position, and wherein said information is written to said first memory as said first ink cartridge moves from said printing region to said flushing position. 21. A printing apparatus according to claim 20, wherein said writing member writes only information showing a used amount or residual quantity. 22. A printing apparatus according to claim 8, further comprising: a first writing member that opposes said first memory during a flushing operation of said first ink cartridge; and a second writing member that opposes said second memory during a flushing operation of said second ink cartridge. 23. A printing apparatus according to claim 8, wherein, during a printing mode in which a print operation is performed, said control circuit does not write any information to said first memory in relation with a flushing operation for discharging ink. 24. A printing apparatus according to claim 8, further comprising a writing member that writes said first information to said first memory of said first ink cartridge. 25. A printing apparatus according to claim 24, further comprising a first discharge head for discharging ink from said first ink cartridge, wherein said first discharge head moves with said first ink cartridge, and wherein, when said first discharge head is positioned in a discharge position to discharge ink during a flushing operation, said writing head opposes said first memory. 26. A printing apparatus according to claim 8, further comprising: a first read/write member coupled to said control circuit; and a second read/write member coupled to said control circuit; wherein said first read/write member is adapted to read first ID information stored in said first memory, wherein said second read/write member is adapted to read second ID information stored in said second memory, and wherein, after said first ID information is read via said first read/write member, said control circuit subsequently recognizes said first read/write member by said first ID information without conducting a subsequent reading operation. 27. An ink cartridge detachably mountable on a printing apparatus body, comprising: a memory into which information is written, wherein said information indicates a used amount or residual quantity of ink contained in said ink cartridge, and wherein said information identifies a writing timing at which said information is to be updated. 28. An ink cartridge according to claim 27, wherein said memory is written via a source when said source and memory are in a noncontact state. 29. An ink cartridge according to claim 28, wherein said memory stores an ID information that identifies said memory. 30. An ink cartridge according to claim 27, wherein said information for determining said writing timing comprises capacity information showing an ink capacity of said ink cartridge. 31. An ink cartridge according to claim 27, wherein said information that identifies said writing timing is a predetermined value according to an ink capacity of said ink cartridge. ront opening, two flexible door panels respectively hung on the hanging rod by top loops thereof and horizontally moved relative to each other to close/open the front opening, each flexible door panel having a plurality of weights arranged along the respective bottom side for keeping the respective flexible door panel in shape when extended out, and hook and loop materials adapted to secure one lateral side of each door panel to the wardrobe body. 1, further comprising: a check valve disposed in parallel with the second solenoid valve and permitting one-way flow from the stroke simulator to the master cylinder; the control means controlling the second solenoid valve to be changed over from the open state to the closed state when the pressure controlling mechanism is in the normal condition and the master cylinder hydraulic pressure reaches the first predetermined level as the master cylinder hydraulic pressure is increasing; and the control means controlling the second solenoid valve to be changed over from the closed state to the open state when the master cylinder hydraulic pressure reaches a second predetermined level which is lower than the first predetermined level the master cylinder hydraulic pressure is decreasing. 3. The brake control device for the vehicle in accordance with claim 1, wherein the pressure controlling mechanism further includes a pair of normally closed valves. 4. The brake control device for the vehicle in accordance with claim 1, including a pressure sensor connected to the hydraulic circuit between the first solenoid valve and the wheel cylinder. 5. A brake control device for a vehicle comprising: a master cylinder which generates a master cylinder hydraulic pressure in response to a depressing force applied to a brake pedal; a sensor which senses the master cylinder hydraulic pressure; a wheel cylinder connected with the master cylinder via a hydraulic conduit; a stroke simulator connected to a branch hydraulic conduit branching from the hydraulic conduit; a first solenoid valve disposed in the hydraulic conduit between the wheel cylinder and a point where the branch hydraulic conduit branches from the hydraulic conduit, the first solenoid valve alternatively permitting and preventing communication between the master cylinder and the wheel cylinder; a second solenoid valve disposed in the branch hydraulic conduit to alternatively permit and prevent communication between the master cylinder and the stroke simulator; a pressure controlling mechanism connected to the hydraulic circuit between the first solenoid valve and the wheel cylinder to produce hydraulic pressure, the pressure controlling mechanism including a pressure source; control means operatively connected to the pressure controlling mechanism, the first solenoid valve and the second solenoid valve to close the first solenoid valve, open the second solenoid valve and operate the pressure controlling mechanism to apply the hydraulic pressure produced by the pressure controlling mechanism to the wheel cylinder when the pressure controlling mechanism is in a normal condition and the master cylinder hydraulic pressure sensed by the sensor is less than a first predetermined pressure level, and to close the first solenoid valve, close the second solenoid valve and operate the pressure controlling mechanism to apply the hydraulic pressure produced by the pressure controlling mechanism to the wheel cylinder when the pressure controlling mechanism is in the normal condition and the master cylinder hydraulic pressure sensed by the sensor is greater than the predetermined level. 6. The brake control device for the vehicle in accordance with claim 5, including a check valve disposed in parallel with the second solenoid valve and permitting one-way flow from the stroke simulator to the master cylinder. 7. The brake control device for the vehicle in accordance with claim 5, wherein the pressure controlling mechanism further includes a pair of normally closed valves. 8. The brake control device for the vehicle in accordance with claim 5, including a pressure sensor connected to the hydraulic circuit between the first solenoid valve and the wheel cylinder. 9. The brake control device for the vehicle in accordance with claim 5, wherein the control means opens the first solenoid valve and closes the second solenoid valve to apply the master cylinder hydraulic pressure produced by t he master cylinder to the wheel cylinder in response to the depressing force applied to the brake pedal when the pressure source is in an abnormal condition. 10. A method of controlling brake force in a vehicle comprising: generating a master cylinder hydraulic pressure in response to a depressing force applied to a brake pedal; sensing the master cylinder hydraulic pressure; controlling hydraulic pressure supplied to a wheel cylinder from a pressure controlling mechanism that includes a pressure source; introducing the master cylinder hydraulic pressure into a stroke simulator while hydraulic pressure is supplied to the wheel cylinder from the pressure controlling mechanism when the master cylinder hydraulic pressure is less than a predetermined value and the pressure controlling mechanism is in a normal condition; and preventing the master cylinder hydraulic pressure from being introduced into the stroke simulator while hydraulic pressure is supplied to the wheel cylinder from the pressure controlling mechanism when the master cylinder hydraulic pressure is greater than a predetermined value and the pressure controlling mechanism is in the normal condition. 11. The method of controlling brake force in a vehicle in accordance with claim 10, including supplying the master cylinder hydraulic pressure to the wheel cylinder when the pressure controlling mechanism is in an abnormal condition. 12. The method of controlling brake force in a vehicle in accordance with claim 10, wherein the wheel cylinder is connected with the master cylinder via a hydraulic conduit and the stroke simulator is connected to a branch hydraulic conduit branching from the hydraulic conduit, the master cylinder hydraulic pressure being introduced into the stroke simulator by closing a first solenoid valve disposed in the hydraulic conduit between the wheel cylinder and a point where the branch hydraulic conduit branches from the hydraulic conduit and opening a second solenoid valve disposed in the branch hydraulic conduit. 13. The method of controlling brake force in a vehicle in accordance with claim 12, wherein the master cylinder hydraulic pressure is prevented from being introduced into the stroke simulator by closing the first solenoid valve and closing the second solenoid valve. 14. The method of controlling brake force in a vehicle in accordance with claim 13, including reducing hydraulic pressure in the stroke simulator by way of a check valve disposed in parallel with the second solenoid valve. 15. The method of controlling brake force in a vehicle in accordance with claim 12, including reducing hydraulic pressure in the stroke simulator by way of a check valve disposed in parallel with the second solenoid valve. 16. The method of controlling brake force in a vehicle in accordance with claim 10, wherein the wheel cylinder is connected with the master cylinder via a hydraulic conduit and the stroke simulator is connected to a branch hydraulic conduit branching from the hydraulic conduit, the master cylinder hydraulic pressure being prevented from being introduced into the stroke simulator by closing a first solenoid valve disposed in the hydraulic conduit between the wheel cylinder and a point where the branch hydraulic conduit branches from the hydraulic conduit and closing a second solenoid valve disposed in the branch hydraulic conduit. 17. The method of controlling brake force in a vehicle in accordance with claim 16, including reducing hydraulic pressure in the stroke simulator by way of a check valve disposed in parallel with the second solenoid valve.