1. An apparatus that assists in adjusting a focus of an image, comprising:
a lens having variable focal length, said lens producing a visual data image from light that enters the lens;
a manual focus adjustment that adjusts the focal length of the lens;
an optical sensor that converts a visual data image from the lens into a two-dimensional, digital array of pixels, the array of pixels arranged in rows and columns;
a processor configured to operate on at least one row of pixels to determine focus level data for a plurality of pixels in the at least one row; and
a display, wherein the display shows a data image from the lens and at least one waveform, superimposed on the image, updated contemporaneously with the image, depicting the focus level data determined by the processor for the at least one row of pixels.
2. The apparatus of claim 1, wherein the apparatus is incorporated into a motion picture camera.
3. The apparatus of claim 1, wherein the at least one waveform has variable color, with the color variations being indicative of focus level data.
4. The apparatus of claim 1, wherein the at least one waveform has variable intensity, with the intensity variations being indicative of focus level data.
5. The apparatus of claim 1, wherein the at least one waveform has variable density, with the density variations being indicative of focus level data.
6. The apparatus of claim 1, wherein the at least one waveform has variable amplitude, with variations in amplitude being indicative of focus level data.
7. The apparatus of claim 1, wherein an edge detection algorithm is used to determine focus level data.
8. The apparatus of claim 1, wherein the focus level data is determined by comparing at least a portion of the digital array of pixels with a blurred rendition of the same portion of the array.
9. A method of providing an indication of a degree of focus, comprising:
detecting an image using a two-dimensional array of optical sensors;
converting the detected image signals into a data structure that represents the detected image as a two-dimensional array of pixel values, where the pixel values are representative of an amount of light detected by the optical sensors;
generating a blurred image by combining a selected pixel value with a plurality of pixel values from the vicinity of the selected pixel value;
comparing the selected pixel value with a corresponding blurred image pixel value to determine a degree of focus; and
providing a visual indication of the degree of focus.
10. The method of claim 9, wherein the visual indication of the degree of focus is overlaid on a representation of the detected image.
11. The method of claim 9, wherein the visual indication of the degree of focus is adjacent to a representation of the detected image.
12. The method of claim 9, wherein providing the visual indication of the degree of focus comprises displaying a waveform corresponding to the degree of focus.
13. The method of claim 12, wherein a point on the waveform corresponds to an average degree of focus for a plurality of vertically aligned pixels.
14. The method of claim 12, wherein a point on the waveform corresponds to an average degree of focus for a plurality of horizontally aligned pixels.
15. The method of claim 12, wherein a point on the waveform corresponds to an average degree of focus for a plurality of pixels in a block.
16. The method of claim 12, wherein a point on the waveform corresponds to an average degree of focus for a plurality of non-adjacent pixels.
17. A method of providing feedback to allow focusing an image in real time, comprising:
using a programmed algorithm to determine a degree of focus of a plurality of regions; and
providing a visual indication of the degree of focus of each region.
18. The method of claim 17, wherein the visual indication comprises at least one waveform.
19. The method of claim 18, wherein the at least one waveforms has variable intensity.
20. The method of claim 18, wherein the at least one waveform is superimposed on an image.
21. The method of claim 17, wherein the degree of focus of a region is indicated by varying the relief of that region.
22. The method of claim 17, wherein the degree of focus of a region is indicated by a geometric figure.
23. The method of claim 17, wherein each region is a line.
24. The method of claim 17, where the regions are described by a regular geometric pattern.
25. The method of claim 24, where the degree of focus of each region is indicated by varying the color of each region.
26. The method of claim 24, where the degree of focus of each region is indicated by varying the brightness of each region.
27. The method of claim 17, where the regions are described by edge detection.
28. The method of claim 27, where the degree of focus of each region is indicated by varying the brightness of each edge.
29. The method of claim 27, where the degree of focus of each region is indicated by varying the color of each edge.
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 electronic computer comprising:
a storage case comprising a housing including an air inlet and an air outlet for the circulation of a flow of cooling air through the housing,
an electronic motherboard comprising a first surface and a second surface, the electronic motherboard being received in the housing such that the electronic motherboard defines a partition opposing the flow of air, the air entering the housing striking the first surface the second surface being provided with connectors for receiving electronic daughterboards, and
an air channeling system configured so as to channel the air hitting the first surface of the electronic motherboard to bring it to the side of the second surface of the electronic motherboard,
wherein the air channeling system is configured to spray the electronic daughterboards received on the electronic motherboard with channeled air, so as to cool said electronic daughterboards through convection of the air.
2. The electronic computer according to claim 1, wherein the air channeling system includes at least one air circulation duct comprising a plurality of calibrated openings, each opening being provided to form an air jet flowing along an electronic daughterboard received on a connector, the air jet flowing in a spraying direction that is inclined relative to the largest dimension of the electronic motherboard, preferably parallel to the largest dimension of the electronic motherboard.
3. The electronic computer according to claim 1, wherein the electronic motherboard comprises at least one notch allowing the flow of air.
4. The electronic computer according to claim 3, wherein the air channeling system is supplied from a notch.
5. The electronic computer according to claim 1, wherein the air channeling system comprises a series of openings extending along a space for receiving an electronic daughterboard, the openings being configured to spray at least one surface of the electronic daughterboard with the channeled air, in a spray direction.
6. The electronic computer according to claim 1, wherein the air channeling system is provided with at least one board guide adapted for guiding an electronic daughterboard toward the electronic motherboard when it is inserted into the housing of the storage case.
7. The electronic computer according to claim 6, wherein the or each board guide is a longitudinal plate with a U-shaped section.
8. The electronic computer according to claim 1, wherein the electronic computer comprises at least one daughterboard adapted to be inserted on a connector of the electronic motherboard, from the top toward the bottom in an insertion direction.
9. The electronic computer according to claim 1, wherein the electronic computer is in accordance with standard ARINC 600.