1. An antenna configuration in an extended position for a flip type mobile phone that includes a speaker component near the top end of the upper flip portion of the mobile phone, the antenna configuration designed to reduce, to a hearing aid compatibility (HAC) M3 rating or better, scattered EM field effects that can cause interference to an active hearing aid when the flip type mobile phone is operated in relatively close proximity to the active hearing aid, the antenna configuration comprising:
a halfwave type antenna capable of extending out from the lower portion of the flip type mobile phone such that when extended the antenna does not share the same vertical axis as the lower portion of the flip type mobile phone, but rather forms a tilt angle (\u03b1) that extends the antenna away from the upper portion of the flip type mobile phone creating a greater separation distance between the speaker and the antenna than had the antenna extended along the same vertical axis as the lower portion of the flip type mobile phone;
an antenna feed contact for coupling the antenna to RF components within the flip type mobile phone; and
an antenna matching network coupled between the antenna feed contact and the antenna, the antenna matching network attenuating an output power of the antenna when the tilt angle (\u03b1) cannot be made large enough to reduce scattered EM field effects to a hearing aid compatibility (HAC) M3 rating or better.
2. The antenna configuration of claim 1 further comprising the antenna matching network being capable of tuning the antenna configuration to operate in the 850 MHZ, 900 MHz, 1800 MHZ, and 1900 MHz GSM frequency bands.
3. The antenna configuration of claim 2 wherein the antenna matching network also attenuates the antenna configuration based on the values of its discrete components to further maximize antenna performance operation in the 850 MHZ, 900 MHz, 1800 MHZ, and 1900 MHz GSM frequency bands.
4. An antenna configuration in a retracted position for a flip type mobile phone that includes a speaker component near the top end of the upper flip portion of the mobile phone, the antenna configuration designed to reduce, to a hearing aid compatibility (HAC) M3 rating or better, scattered EM field effects that can cause interference to an active hearing aid when the flip type mobile phone is operated in relatively close proximity to the active hearing aid, the antenna configuration comprising:
a halfwave type antenna retractable into the lower flip portion of the mobile phone;
an antenna feed contact that is not in direct contact with the antenna in the retracted position wherein the antenna is capacitively fed via a coupling effect that is achieved between the antenna and the antenna feed contact; and
an antenna ground contact positioned a distance, x, up from the bottom tip of the antenna and contacting the antenna when in the retracted position.
5. The antenna configuration of claim 4 wherein the distance x is determined based on the tuning requirements of the antenna configuration to maximize efficiency in the 850 MHZ GSM frequency band.
6. The antenna configuration of claim 5 further comprising an antenna matching network coupled between the antenna feed contact and the antenna, the antenna matching network for tuning the antenna configuration to operate in the 850 MHZ, 900 MHz, 1800 MHZ, and 1900 MHz GSM frequency bands.
7. The antenna configuration of claim 6 wherein the antenna matching network also attenuates the antenna configuration based on the values of its discrete components to further maximize antenna performance operate in the 850 MHZ, 900 MHz, 1800 MHZ, and 1900 MHz GSM frequency bands.
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 of displaying a captured image, comprising:
using an array of pixels to capture an image, wherein the array of pixels comprises a first plurality of pixels of a first color, a second plurality of pixels of a second color, and a third plurality of pixels of a third color, wherein the pixels are arranged into rows and columns, and wherein the pixels of the third plurality of pixels have two different arrangements within the array of pixels with respect to neighboring pixels;
for each pixel in the third plurality of pixels, normalizing the pixel’s value as a function of the pixel values of at least six other pixels in the third plurality of pixels; and
displaying the captured image using a normalized value for the pixel value of each pixel in the third plurality of pixels.
2. The method of claim 1, wherein the third color comprises green.
3. The method of claim 1, further comprising preprocessing the pixel value.
4. The method of claim 1, further comprising post-processing the pixel value.
5. The method of claim 1, wherein the array of pixels is arranged into a Bayer array.
6. The method of claim 1, wherein the first arrangement of the two different arrangements comprises a green pixel having red pixels in its row and blue pixels in its column and wherein the second arrangement of the two different arrangements comprises a green pixel having blue pixels in its row and red pixels in its column.
7. The method of claim 6, wherein normalizing a pixel’s value comprises:
combining the values of four pixels that are immediately diagonally adjacent to the pixel to produce a first average;
combining the first average with the pixel’s value to produce a second average;
combining limited pixel values for the four pixels that are immediately diagonally adjacent to the pixel to produce a third average, wherein the limited pixel values are a function of the second average;
combining limited pixel values for two additional pixels in the third plurality of pixels to produce a fourth average, wherein the limited pixel values are a function of the second average and wherein the two additional pixels comprise two pixels nearest the pixel that are not immediately adjacent to the pixel;
subtracting the fourth average from the third average to produce a result;
dividing the result by two to produce a divided result; and
combining the divided result with the pixel’s value to produce a normalized pixel value.
8. The method of claim 7, wherein combining, in each instance, comprises adding the values followed by truncating one or more least significant bits.
9. The method of claim 7, wherein combining, in each instance, comprises averaging the values followed by rounding the result to the nearest integer.
10. The method of claim 7, wherein the two additional pixels are in the same row as the pixel.
11. The method of claim 7, wherein the two additional pixels are in the same column as the pixel.
12. The method of claim 7, wherein the limited pixel values are a monotonic function of the second average.
13. The method of claim 7, wherein the limited pixel values are a non-monotonic function of the second average.
14. A method of displaying an image captured by an image sensor array, wherein the array comprises a plurality of red pixels, a plurality of blue pixels, and a plurality of green pixels arranged in a Bayer array, each pixel having a pixel value associated therewith, wherein the pixels are arranged into rows and columns, wherein a first plurality of the green pixels, designated Gr pixels, are comprised by rows of pixels having only red and green pixels, and a second plurality of the green pixels, designated Gb pixels, are comprised by rows of pixels having only blue and green pixels, wherein the rows of pixels having Gr pixels and the rows of pixels having Gb pixels are in an alternating relationship in the image sensor array, the method comprising:
for each of a plurality of Gb pixels in the pixel array:
receiving a pixel value for the Gb pixel, wherein the Gb pixel comprises a subject pixel;
receiving pixel values for four Gr pixels that are in an immediately adjacent diagonal relationship with the subject Gb pixel;
receiving pixel values for two additional Gb pixels, wherein the subject Gb pixel and the two additional Gb pixels are comprised by a common row, wherein the subject Gb pixel is between the two additional Gb pixels, and wherein the two additional Gb pixels are each in an immediately adjacent diagonal relationship with two of the four Gr pixels;
combining the pixel values of the four Gr pixels to produce Avg(Gr);
combining the pixel value of the subject Gb pixel with Avg(Gr) to produce LimInput;
combining limited pixel values of the four Gr pixels to produce LimAvg(Gr), wherein the limited pixel values are a function of LimInput;
combining limited pixel values of the two remaining Gb pixels to produce LimAvg(Gb), wherein the limited pixel values are a function of LimInput; and
subtracting LimAvg(Gb) from LimAvg(Gr), dividing the result by two, then using the divided result to correct the pixel value of the subject Gb pixel, thereby producing a corrected pixel value; and
displaying the captured image using one or more corrected pixel values.
15. The method of claim 14, further comprising:
for each of a plurality of Gr pixels in the pixel array:
receiving a pixel value for the Gr pixel, wherein the Gr pixel comprises a subject pixel;
receiving pixel values for four Gb pixels that are in an immediately adjacent diagonal relationship with the subject Gr pixel;
receiving pixel values for two additional Gr pixels, wherein the subject Gr pixel and the two additional Gr pixels are comprised by a common row, wherein the subject Gr pixel is between the two additional Gr pixels, and wherein the two additional Gr pixels are each in an immediately adjacent diagonal relationship with two of the four Gb pixels;
combining the pixel values of the four Gb pixels to produce Avg(Gb);
combining the pixel value of the subject Gr pixel with Avg(Gb) to produce LimInput;
combining limited pixel values of the four Gb pixels to produce LimAvg(Gb), wherein the limited pixel values are a function of LimInput;
combining limited pixel values of the two remaining Gr pixels to produce LimAvg(Gr), wherein the limited pixel values are a function of LimInput; and
subtracting LimAvg(Gr) from LimAvg(Gb), dividing the result by two, then using the divided result to correct the pixel value of the subject Gr pixel, thereby producing a corrected pixel value.
16. The method of claim 15, wherein combining, in each instance, comprises adding the values followed by truncating one or more least significant bits.
17. The method of claim 15, wherein combining, in each instance, comprises averaging the values followed by rounding the result to the nearest integer.
18. The method of claim 15, wherein the limited pixel values are a monotonic function of LimInput.
19. The method of claim 15, wherein the limited pixel values are a non-monotonic function of LimInput.
20. An arrangement configured to process pixel values relating to an image captured by an image capture device comprising an array of pixels, wherein the array of pixels comprises a first plurality of pixels of a first color, a second plurality of pixels of a second color, and a third plurality of pixels of a third color, wherein the pixels are arranged into rows and columns, and wherein the pixels of the third plurality of pixels have two different arrangements within the array of pixels with respect to neighboring pixels, the arrangement comprising:
means for normalizing the pixel value of each pixel in the third plurality of pixels as a function of the pixel values of at least six other pixels in the third plurality of pixels.
21. The arrangement of claim 20, wherein the third color comprises green.
22. The arrangement of claim 20, wherein the array of pixels is arranged into a Bayer array.
23. The arrangement of claim 20, wherein the first arrangement of the two different arrangements comprises a green pixel having red pixels in its row and blue pixels in its column and wherein the second arrangement of the two different arrangements comprises a green pixel having blue pixels in its row and red pixels in its column.
24. The arrangement of claim 23, wherein the means for normalizing a pixel’s value comprises:
means for averaging the values of four pixels that are immediately diagonally adjacent to the pixel to produce a first average;
means for averaging the first average with the pixel’s value to produce a second average;
means for averaging limited pixel values for the four pixels that are immediately diagonally adjacent to the pixel to produce a third average, wherein the limited pixel values are a function of the second average;
means for averaging limited pixel values for two additional pixels in the third plurality of pixels to produce a fourth average, wherein the limited pixel values are a function of the second average and wherein the two additional pixels comprise two pixels nearest the pixel that are not immediately adjacent to the pixel;
means for subtracting the fourth average from the third average to produce a result;
means for dividing the result by two to produce a divided result; and
means for combining the divided result with the pixel’s value to produce a normalized pixel value.
25. A circuit configured to process pixel values relating to an image captured by an image capture device comprising an array of pixels, wherein the array of pixels comprises a first plurality of pixels of a first color, a second plurality of pixels of a second color, and a third plurality of pixels of a third color, wherein the pixels are arranged into rows and columns, and wherein the pixels of the third plurality of pixels have two different arrangements within the array of pixels with respect to neighboring pixels, the circuit comprising:
an arrangement configured to normalize the pixel value of each pixel in the third plurality of pixels as a function of the pixel values of at least six other pixels in the third plurality of pixels.
26. The circuit of claim 25, wherein the third color comprises green and wherein the array of pixels is arranged into a Bayer array.