What is claimed is:
1. A method, comprising:
querying a plurality of devices of a computer system for health data during a pre-boot phase of the computer system; and
providing a pre-boot device manager that includes at least a portion of the health data to enable a user to reconfigure the plurality of devices during the pre-boot phase.
2. The method of claim 1, wherein querying the device for health data comprises:
requesting a health status from each of the plurality of devices; and
updating a global health indicia of the computer system based on the health statuses received from each of the plurality of devices, the global health indicia to indicate an overall health condition of the computer system.
3. The method of claim 2, further comprising querying a given device from among the plurality of devices for health information if the health status received from the given device indicates the device is unhealthy.
4. The method of claim 3, wherein querying the given device for health information comprises executing a health programmatic interface by firmware to facilitate querying the device.
5. The method of claim 1, further comprising maintaining health data corresponding to a current pre-boot phase in a non-volatile manner to be available to firmware upon a subsequent boot of the computer system.
6. The method of claim 1, further comprising initializing each of the plurality of devices during the pre-boot phase of the computer system and storing configuration information for each of the plurality of devices in a central repository.
7. The method of claim 6, further comprising recording the health data received from each of the plurality of devices in the central repository.
8. The method of claim 6, wherein the pre-boot device manager includes information from the central repository.
9. The method of claim 1, further comprising generating an error signal if the health data indicates at least one of the plurality of devices is unhealthy.
10. The method of claim 1, wherein the pre-boot device manager indicates an alternative configuration for at least one of the plurality of devices.
11. The method of claim 1, wherein the method is performed by firmware executed by the computer system in accordance with an Extensible Firmware Interface (EFI) framework standard.
12. An article of manufacture comprising:
a machine-readable medium on which a plurality of instructions are stored, which when executed perform operations comprising:
storing configuration information of a plurality of devices of a computer system received from each device during a pre-boot phase of the computer system;
querying each of the plurality of devices for a health status during pre-boot phase; and
in response to receiving a health status of unhealthy from an unhealthy device,
querying the unhealthy device for health information during the pre-boot phase;
receiving health information from the unhealthy device in response to the query; and
recording the health information.
13. The article of manufacture of claim 12, wherein execution of the instructions further performs the operations of providing a pre-boot device manager that includes configuration information and health information corresponding to the plurality of devices, the pre-boot device manager to enable a user to reconfigure the plurality of devices during the pre-boot phase.
14. The article of manufacture of claim 13, wherein the pre-boot device manager indicates what device settings caused the unhealthy device to report the health status of unhealthy.
15. The article of manufacture of claim 13, wherein the device manager indicates the availability of an alternative configuration of the unhealthy device.
16. The article of manufacture of claim 13, wherein the device manager indicates the availability of an alternative configuration to optimize the configuration of at least one of the plurality of devices.
17. The article of manufacture of claim 12, further comprising updating global health indicia of the computer system based on the health statuses received from the plurality of devices, the global health indicia to indicate if at least one device of the plurality of devices is unhealthy.
18. The article of manufacture of claim 12, wherein execution of the instructions further performs the operation of generating an error signal if the health status reported by at least one of the plurality of devices is unhealthy.
19. The article of manufacture of claim 12, wherein querying the device for health information comprises implementing a health programmatic interface via firmware to facilitate querying the device.
20. The article of manufacturer of claim 19, wherein the health programmatic interface is configured to perform the query based on questions maintained in a non-volatile storage device.
21. The article of manufacture of claim 12, wherein the health information of the device in a current pre-boot phase is maintained in a non-volatile manner to be available to firmware upon a subsequent boot of the computer system.
22. The article of manufacture of claim 12, wherein the plurality of instructions to operate in accordance with an Extensible Firmware Interface (EFI) framework standard.
23. A computer system, comprising:
a processor;
a monitor, operatively coupled to the processor; and
at least one flash device operatively coupled to the processor on which firmware instructions are stored, which when executed by the processor perform operations comprising:
querying a plurality of devices of the computer system for health data during a pre-boot phase of the computer system;
recording the health data received from the plurality of devices in a central repository; and
providing a user interface comprising a pre-boot device manager via the monitor to display information from the central repository to a user of the computer system.
24. The computer system of claim 23, wherein querying the plurality of devices comprises:
requesting a health status from each of the plurality of devices; and
updating global health indicia of the computer system based on the health statuses received from each of the plurality of devices, the global health indicia to indicate an overall health condition of the computer system.
25. The computer system of claim 24, wherein execution of the firmware instructions further performs the operations of querying a device of the plurality of devices for health information if the health status received from the device indicates the device is unhealthy.
26. The computer system of claim 25, wherein querying the device for health information comprises implementing a health programmatic interface to facilitate querying the device.
27. The computer system of claim 23, wherein execution of the firmware instructions further performs the operation of reconfiguring a selected device from among the plurality of devices in response to a user request received via the pre-boot device manager.
28. The computer system of claim 23 wherein execution of the firmware instructions further performs the operation of generating an error signal if the health data indicates that at least one of the plurality of devices is unhealthy.
29. The computer system of claim 23, wherein the firmware instructions to operate in accordance with an Extensible Firmware Interface (EFI) framework standard.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An in-plane switching liquid crystal display comprising:
a first polarizer plate;
a second polarizer plate; and
a liquid crystal cell, which is horizontally aligned and filled with liquid crystal of positive dielectric anisotropy (\u0394\u03b5>0) or negative dielectric anisotropy (\u0394\u03b5<0), an optical axis of the liquid crystal filled in the liquid crystal cell being aligned in-plane in parallel to the first and second polarizer plates,
wherein an absorption axis of the first polarizer plate is perpendicular to an absorption axis of the second polarizer plate, the optical axis of the liquid crystal filled in the liquid crystal cell is parallel to the absorption axis of the first polarizer plate, a positive biaxial retardation film defined by a following Equation is aligned between the liquid crystal cell and the second polarizer plate, an optical axis of the positive biaxial retardation film is perpendicular to the absorption axis of the second polarizer plate, and an in-plane retardation value of the positive biaxial retardation film is equal to or less than 190 nm at a wavelength of 550 nm.
Equation
nx\u2260ny<nz,
wherein nx and ny are in-plane refractive indexes, nz is a thickness refractive index, and the positive biaxial retardation film has a positive in-plane retardation value (Rin=d\xd7(nx\u2212ny)) and a positive thickness retardation value (Rth=d\xd7(nz\u2212ny)) in which d is a thickness of a film.
2. An in-plane switching liquid crystal display comprising:
a first polarizer plate;
a second polarizer plate; and
a liquid crystal cell, which is horizontally aligned and filled with liquid crystal of positive dielectric anisotropy (\u0394\u03b5>0) or negative dielectric anisotropy (\u0394\u03b5<0), an optical axis of the liquid crystal filled in the liquid crystal cell being aligned in-plane in parallel to the first and second polarizer plates,
wherein an absorption axis of the first polarizer plate is perpendicular to an absorption axis of the second polarizer plate, the optical axis of the liquid crystal filled in the liquid crystal cell is parallel to the absorption axis of the first polarizer plate, a first positive biaxial retardation film defined by a following Equation is aligned between the liquid crystal cell and the first polarizer plate, a second positive biaxial retardation film defined by the following Equation is aligned between the liquid crystal cell and the second polarizer plate, an optical axis of the first positive biaxial retardation film is parallel to the absorption axis of the first polarizer plate, an optical axis of the second positive biaxial retardation film is perpendicular to the absorption axis of the second polarizer plate, an in-plane retardation value of the first positive biaxial retardation film is equal to or less than 190 nm at a wavelength of 550 nm, and an in-plane retardation value of the second positive biaxial retardation film is in a range of 150 nm to 350 nm at a wavelength of 550 nm.
Equation
nx\u2260ny<nz,
wherein nx and ny are in-plane refractive indexes, nz is a thickness refractive index, and the positive biaxial retardation film has a positive in-plane retardation value (Rin=d\xd7(nx\u2212ny)) and a positive thickness retardation value (Rth=d\xd7(nz\u2212ny)) in which d is a thickness of a film.
3. An in-plane switching liquid crystal display comprising:
a first polarizer plate;
a second polarizer plate; and
a liquid crystal cell, which is horizontally aligned and filled with liquid crystal of positive dielectric anisotropy (\u0394\u03b5>0) or negative dielectric anisotropy (\u0394\u03b5<0), an optical axis of the liquid crystal filled in the liquid crystal cell being aligned in-plane in parallel to the first and second polarizer plates,
wherein an absorption axis of the first polarizer plate is perpendicular to an absorption axis of the second polarizer plate, the optical axis of the liquid crystal filled in the liquid crystal cell is parallel to the absorption axis of the first polarizer plate, a first positive biaxial retardation film defined by a following Equation is aligned between the liquid crystal cell and the first polarizer plate, a second positive biaxial retardation film defined by the following Equation is aligned between the liquid crystal cell and the second polarizer plate, an optical axis of the first positive biaxial retardation film is parallel to the absorption axis of the first polarizer plate, an optical axis of the second positive biaxial retardation film is parallel to the absorption axis of the second polarizer plate, an in-plane retardation value of the first positive biaxial retardation film is equal to or less than 150 nm at a wavelength of 550 nm, and an in-plane retardation value of the second positive biaxial retardation film is in a range of 200 nm to 350 nm at a wavelength of 550 nm.
Equation
nx\u2260ny<nz,
wherein nx and ny are in-plane refractive indexes, nz is a thickness refractive index, and the positive biaxial retardation film has a positive in-plane retardation value (Rin=d\xd7(nx\u2212ny)) and a positive thickness retardation value (Rth=d\xd7(nz\u2212ny)) in which d is a thickness of a film.
4. The in-plane switching liquid crystal display according to claim 1, wherein a retardation value of the liquid crystal cell is in a range of 200 nm to 400 nm at a wavelength of 550 nm.
5. The in-plane switching liquid crystal display according to claim 1, wherein the positive biaxial retardation film is used as a protective film for at least one polarizer plate.
6. The in-plane switching liquid crystal display according to claim 1, wherein an internal protective film of the first polarizer plate has a thickness retardation value of 0 or a negative thickness retardation value.
7. The in-plane switching liquid crystal display according to claim 2, wherein a retardation value of the liquid crystal cell is in a range of 200 nm to 400 nm at a wavelength of 550 nm.
8. The in-plane switching liquid crystal display according to claim 2, wherein the positive biaxial retardation film is used as a protective film for at least one polarizer plate.
9. The in-plane switching liquid crystal display according to claim 2, wherein an internal protective film of the first polarizer plate has a thickness retardation value of 0 or a negative thickness retardation value.
10. The in-plane switching liquid crystal display according to claim 3, wherein a retardation value of the liquid crystal cell is in a range of 200 nm to 400 nm at a wavelength of 550 nm.
11. The in-plane switching liquid crystal display according to claim 3, wherein the positive biaxial retardation film is used as a protective film for at least one polarizer plate.
12. The in-plane switching liquid crystal display according to claim 3, wherein an internal protective film of the first polarizer plate has a thickness retardation value of 0 or a negative thickness retardation value.