1. A hydraulic pressure supply system of an automatic transmission for a vehicle which generates low hydraulic pressure and high hydraulic pressure using oil stored in an oil pan and supplies the low hydraulic pressure and the high hydraulic pressure respectively to a low pressure portion and a high pressure portion, the system comprising:
a low-pressure hydraulic pump pumping the oil stored in the oil pan and generating the low hydraulic pressure; and
a high-pressure hydraulic pump changing the low hydraulic pressure supplied from the low-pressure hydraulic pump into the high hydraulic pressure and supplying the high hydraulic pressure to the high pressure portion;
wherein the low-pressure hydraulic pump and the high-pressure hydraulic pump are integrated as one vane pump,
wherein the one vane pump comprises:
a pump housing provided with a cam ring receiving portion formed at a center portion, a first inlet and a first outlet formed respectively at lower side portions of the cam ring receiving portion, and a second inlet and a second outlet formed respectively at upper side portions of the cam ring receiving portion, the first outlet and the second inlet being connected through a connecting hydraulic line;
a cam ring fixedly mounted in the cam ring receiving portion of the pump housing and provided with a cam hole formed at a center portion of the cam ring;
a rotor disposed at an upward eccentric position offset from a center of the cam hole, and connected to and driven by a drive shaft; and
a vane disposed at an external circumferential portion of the rotor along a circumferential direction with even distance so as to be slidable radially, and provided with a free end portion contacting with an interior circumference of the cam hole.
2. The hydraulic pressure supply system of claim 1, wherein the first inlet is connected to the oil pan through an input line,
the first outlet is connected to the low pressure portion through a low-pressure line, and
the second outlet is connected to the high pressure portion through a high-pressure line.
3. The hydraulic pressure supply system of claim 1, wherein the one vane pump is provided with a low-pressure pumping region formed at a first portion with respect to the vane and a high-pressure pumping region formed at a second portion with respect to the vane such that the low hydraulic pressure and the high hydraulic pressure are simultaneously discharged per one rotation of the vane.
4. The hydraulic pressure supply system of claim 3, wherein the low-pressure pumping region comprises the first inlet and the first outlet.
5. The hydraulic pressure supply system of claim 3, wherein the high-pressure pumping region comprises the second inlet and the second outlet.
6. The hydraulic pressure supply system of claim 3, wherein volume of the low-pressure pumping region is larger than that of the high-pressure pumping region.
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 optical touch-sensitive device for use with a display, the touch-sensitive device comprising:
a planar optical waveguide extending over a surface of the display, the waveguide having a top surface and a bottom surface;
emitters and detectors arranged along a periphery of the display and below the bottom surface of the waveguide;
an optical coupler assembly positioned along the periphery of the display, the optical coupler assembly coupling optical beams produced by the emitters into the waveguide and out of the waveguide to the detectors, the optical beams propagating through the waveguide via total internal reflection (TIR) wherein touches on the top surface of the waveguide disturb the optical beams, the touch-sensitive device determining touch events based on the disturbances.
2. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly couples the optical beams into the waveguide and out of the waveguide through the bottom surface of the waveguide.
3. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly couples the optical beams into the waveguide and out of the waveguide through an edge of the waveguide.
4. The optical touch-sensitive device of claim 3 wherein the optical coupler assembly comprises a plurality of faceted surfaces, each faceted surface oriented at an optically non-parallel and non-perpendicular angle with respect to the bottom surface of the waveguide.
5. The optical touch-sensitive device of claim 4 wherein at least one of the faceted surfaces comprises a reflective coating.
6. The optical touch-sensitive device of claim 4 wherein the optical coupler assembly is configured to couple a subset of the optical beams between the waveguide and the emitters and detectors using TIR.
7. The optical touch-sensitive device of claim 6 wherein the optical coupler assembly is configured to couple a remaining subset of the optical beams between the waveguide and the emitters and detectors using specular reflection.
8. The optical touch-sensitive device of claim 6 wherein the optical coupler assembly is configured to couple a remaining subset of the optical beams between the waveguide and the emitters and detectors using specular reflection and TIR.
9. The optical touch-sensitive device of claim 4 wherein the optical coupler assembly is configured to couple the optical beams between the waveguide and the emitters and detectors using specular reflection and TIR.
10. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly comprises a first portion and a second portion, the first portion side optically coupled to the waveguide, the second portion butt coupled to the first portion, the second portion optically coupled to the emitters and detectors.
11. The optical touch-sensitive device of claim 1 wherein the emitters and detectors are oriented to emit and receive, respectively, optical beams in a direction substantially perpendicular to the plane of the waveguide.
12. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly is configured such that optical beams passing through the optical coupler exit in a direction rotated approximately 90 degrees from the direction they entered the optical coupler.
13. The optical touch-sensitive device of claim 1 wherein the emitters and detectors are oriented to emit and receive, respectively, optical beams in a direction substantially parallel to the plane of the waveguide.
14. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly is configured such that optical beams passing through the optical coupler assembly exit in a same direction that they entered the optical coupler assembly.
15. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly is configured such that optical beams passing through the optical coupler assembly exit in a direction approximately zero or 180 degrees from the direction they entered the optical coupler assembly.
16. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly, emitters, and detectors are located outside a side edge of the display.
17. The optical touch-sensitive device of claim 1 wherein the emitters and detectors are located underneath the display.
18. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly comprises a light pipe configured to redirect optical beams a distance in a direction substantially perpendicular to the plane of the waveguide.
19. The optical touch-sensitive device of claim 1 wherein each light pipe comprises one or more reflective surfaces.
20. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly comprises:
a planar coupling surface, wherein optical beams couple to the waveguide through the coupling surface at greater than a critical angle with respect to a normal from the bottom surface of the waveguide so that said optical beams are totally internally reflected within the waveguide; and
a planar light rejection surface, wherein ambient light that enters the optical coupler assembly through the coupling surface at less than the critical angle strikes the planar light rejection surface at less than the critical angle and exits the optical coupler assembly.
21. The optical touch-sensitive device of claim 20 wherein the planar light rejection surface is optically parallel to the planar coupling surface, and the optical coupler assembly is constructed of a material that has substantially a same index of refraction as the waveguide.
22. The optical touch-sensitive device of claim 1 comprising an infrared transmissive layer optically coupled between the bottom surface of the waveguide and the optical coupler assembly, the light filtering layer configured to filter visible ambient light.
23. The optical touch-sensitive device of claim 1 wherein the optical coupler assembly comprises:
a planar coupling surface, wherein optical beams couple to the waveguide through the coupling surface at greater than a critical angle with respect to a normal from the bottom surface of the waveguide so that said optical beams are totally internally reflected within the waveguide; and
a light shield surface optical coupled between the bottom surface of the waveguide and the optical coupler assembly, the light shield configured to block ambient light incident on the emitters and detectors through the waveguide at an angle less than the critical angle.