1. An appliance for making coffee, tea and the like, comprising a housing (1) for a water reservoir (2), a filtering device (3) including a filter holder (4) and a lever (5) supported by the housing (1) and supporting the filter holder (4), and a strength control system (20) for obtaining and indicating a desired quantity ratio between a quantity of water in the water reservoir (2) and a quantity of substance, to be filtered, in the filter holder (4) and for exerting a force on the lever (5), the strength control system (20) comprising an automatic adjustment unit (22) for adjusting the desired quantity ratio between the quantity of water in the water reservoir (2) and the quantity of substance in the filter holder (4).
2. An appliance according to claim 1, wherein the automatic adjustment unit (22) comprises a resilient element (50a) having a first part (51) being connected to a portion of the lever (5) and being restricted in a second part (52) at a restriction position responsive to the quantity of water in the reservoir (2).
3. An appliance according to claim 2, wherein the resilient element (50a) is a leaf spring (50) having a loadable portion (53) of adjustable length, said length being adjustable by an adjusting portion (60) of a length control unit (61) included by the automatic adjustment unit (22).
4. An appliance according to claim 3, wherein the automatic adjustment unit (22) comprises a floatable body (54) for cooperation with a guided portion (62) of the length control unit (61), the guided portion (62) being coupled to the adjusting portion (60) of the length control unit (61), wherein the floatable body (54) has a position responsive to the quantity of water in the reservoir (2).
5. An appliance according to claim 4, wherein the guided portion (62) has a first guide face (63) and the floatable body (54) has a second guide face (64) corresponding to and cooperating with the first guide face (63) for slideable engagement of the floatable body (54) with the guided portion (62).
6. An appliance according to claim 1, including a strength indicating scale (10, 11, 12) for indicating the perceived strength of the brew, according to the ratio between the quantity of water and the quantity of substance to be filtered.
7. An appliance according to claim 1, wherein the filtering device (3) includes a movable element (6), responsive to water level in the water reservoir for exerting a further force to the lever (5).
8. An appliance according to claim 1, wherein the strength control system (20) comprises a further adjustment unit for obtaining a preset quantity ratio between the quantity of water in the water reservoir and the quantity of the substance in the filter holder, to be filtered and for exerting a force to the lever (5).
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. A method applied on a display device having a display screen, the method comprising:
projecting an invisible light beam from a remote device towards the display screen to create an invisible light spot on a first substrate having an area that is at least 80% of the area of the display screen, wherein the invisible light beam with a spreading angle less than 20 degrees is generated from a light source on the remote device that is more than 0.1 meter away from the display screen overlaying a matrix of pixel elements;
measuring a position of the invisible light spot on the first substrate using a two-dimensional matrix of photo-detecting elements constructed on the first substrate, the two-dimensional matrix of photo-detecting elements being arranged in a plurality of rows and a plurality of columns, wherein a photo-detecting element in the two-dimensional matrix of photo-detecting elements is electrically connected between a first conducting line in a first array of conducting lines and a second conducting line in a second array of conducting lines crossing the first array of conducting lines; and
transmitting to a computer digital signals specifying the position of the invisible light spot on the first substrate.
2. The method of claim 1, further comprising:
transmitting an image from the computer to the display device, wherein the image having a cursor therein is constructed by the computer with the location of the cursor at least partially determined from the digital signals specifying the position; and
displaying on the display device the image received from the computer to have the cursor in the image displayed on the display screen at a position substantially close to the position on the display screen as pointed by the invisible light beam.
3. The method of claim 1, further comprising:
transmitting an image from the computer to the display device, wherein the image having a mark therein is constructed by the computer with the location of the cursor at least partially determined from the digital signals specifying the position; and
displaying on the display device the image received from the computer to have the mark in the image displayed on the display screen at a position substantially close to the position on the display screen as pointed by the invisible light beam.
4. The method of claim 1, wherein:
the matrix of pixel elements is also constructed on the first substrate.
5. The method of claim 1, wherein the display device further comprises:
a second substrate having the matrix of pixel elements constructed thereon.
6. The method of claim 5, wherein the first substrate is substantially transparent to human eyes in visible light spectrum.
7. The method of claim 5, wherein the first substrate is sandwiched between two windows of a housing that is physically separated from the display device.
8. The method of claim 5, wherein the first substrate is covered by a window that is physically separated from the display device.
9. The method of claim 5, wherein the remote device is a game gun.
10. A measuring device comprising:
a visually transparent substrate;
a two-dimensional matrix of photo-detecting elements constructed on the visually transparent substrate, wherein a photo-detecting element comprises a photodetector, and the two-dimensional matrix of photo-detecting elements is arranged in a plurality of rows and a plurality of columns, wherein a photo-detecting element in the two-dimensional matrix of photo-detecting elements is electrically connected between a first conducting line in a first array of conducting lines and a second conducting line in a second array of conducting lines crossing the first array of conducting lines;
electronic circuitry configured to measure a position of an invisible light spot on the transparent substrate using the matrix of photo-detecting elements; and
electronic circuitry including an interface port and configured to output signals specifying the position of the invisible light spot on the transparent substrate.
11. The measuring device of claim 10, further comprising:
a housing including two windows; and
wherein the transparent substrate is sandwiched between the two windows.
12. The measuring device of claim 10, wherein the transparent substrate is covered by a window.
13. The measuring device of claim 10, wherein the interface port includes any one of a USB port, a PS2 serial port, a wireless port, a Wi-Fi port, and a Bluetooth port.
14. The measuring device of claim 10, wherein the photo-detecting element comprises:
a photodetector having a first terminal electrically connected to a conducting line in the first array of conducting lines and having a second terminal electrically connected to a conducting line in the second array of conducting lines.
15. The measuring device of claim 10, wherein the photo-detecting element comprises:
a switching transistor having a gate electrically connected to a conducting line in the first array of conducting lines; and
a photodetector having a first terminal electrically connected to a conducting line in the second array of conducting lines though a semiconductor channel of the switching transistor.
16. The measuring device of claim 15, wherein the switching transistor is an organic switching transistor.
17. A display device comprising:
a display cover screen;
a first substrate that is visually transparent;
a two-dimensional matrix of photo-detecting elements constructed on the first substrate, wherein a photo-detecting element comprises a photodetector, and the two-dimensional matrix of photo-detecting elements is arranged in a plurality of rows and a plurality of columns;
a second substrate;
a matrix of pixel elements constructed on the second substrate; and
wherein the first substrate is sandwiched between the display cover screen and the second substrate.
18. The television of claim 17, wherein a photo-detecting element in the two-dimensional matrix of photo-detecting elements is electrically connected between a first conducting line in a first array of conducting lines and a second conducting line in a second array of conducting lines crossing the first array of conducting lines.
19. The television of claim 17, wherein a photo-detecting element comprises:
a photodetector having a first terminal electrically connected to a conducting line in a first array of conducting lines and having a second terminal electrically connected to a conducting line in a second array of conducting lines.
20. The television of claim 17, wherein a photo-detecting element comprises:
a switching transistor having a gate electrically connected to a conducting line in a first array of conducting lines; and
a photodetector having a first terminal electrically connected to a conducting line in a second array of conducting lines though a semiconductor channel of the switching transistor.