1. A method of processing video data of a display device, comprising:
(a) comparing data of an ith frame (\u201ci\u201d is a natural number) and data of a (i+1)th frame to determine whether the data of the (i+1)th frame is a motion picture or a still image; and
(b) employing a different dithering method to display the video data on the display device depending upon the determination result of the motion picture or the still image,
wherein, in the dithering method, dithering is performed by selecting one of a plurality of dither mask patterns, which are disposed in the form of j (\u201cj\u201d is a natural number; horizontal)\xd7j (vertical), based on gray scale values of input data and a vertical sync signal, and by extracting a specific dither value from the selected dither mask pattern based on a horizontal sync signal and a pixel clock, and
wherein if it is determined that the data of the (i+1)th frame is a motion picture, dithering is performed using one or more j\xd7j\u22121 dither mask patterns in which one vertical line is removed from the j\xd7j dither mask patterns when a first dither mask pattern is applied in the (i+1)th frame.
2. The method as claimed in claim 1, wherein
wherein, when the (i+1)th frame is determined to be a motion picture, said dithering is further performed using the j\xd7j dither mask patterns when the remaining dither mask patterns except for the first dither mask pattern are applied.
3. The method as claimed in claim 2, further comprising:
controlling the pixel clock so that, in the (i+1)th frame, only the j\xd7j\u22121 patterns are employed in the first dither mask pattern.
4. The method as claimed in claim 1, wherein if it is determined that the data of the (i+1)th frame is the still image, the dithering is performed by using the j\xd7j dither mask patterns.
5. An apparatus for processing video data of a display device, comprising:
a motion detection circuit for comparing data of an ith frame (\u201ci\u201d is a natural number) and data of a (i+1)th frame to determine whether the data of the (i+1)th frame is a motion picture or a still image; and
a dithering circuit for employing a different dithering method depending upon the determination result of the motion picture or the still image, wherein:
the dithering circuit performs dithering by selecting one of a plurality of dither mask patterns, which are disposed in the form of j (\u201cj\u201d is a natural number; horizontal)\xd7j (vertical), based on gray scale values of input data and a vertical sync signal, and by extracting a specific dither value from the selected dither mask pattern based on a horizontal sync signal and a pixel clock, and
if it is determined that the data of the (i+1)th frame is a motion picture, the dithering circuit performs dithering using one or more j\xd7j\u22121 dither mask patterns in which one vertical line is removed from the j\xd7j dither mask patterns when a first dither mask pattern is applied in the (i+1)th frame.
6. The apparatus as claimed in claim 5,
wherein, when the (i+1)th frame is determined to be a motion picture, the dithering circuit further performs dithering using the j\xd7j dither mask patterns when the remaining dither mask patterns except for the first dither mask pattern are applied.
7. The apparatus as claimed in claim 6, wherein the dithering unit employs only the j\xd7j\u22121 dither mask patterns in the first dither mask pattern in the (i+1)th frame by controlling the pixel clock.
8. The apparatus as claimed in claim 5, wherein if it is determined that the data of the (i+1)th frame is the still image, the dithering unit performs the dithering by using the j\xd7j dither mask patterns.
9. A method of processing video data of a display device, comprising:
comparing first and second frames to determine whether the second frame corresponds to a motion picture or a still image; and
performing a dithering method to display the video data on the display device, the dithering method performed being based on whether the second frame is a motion picture or still image, wherein if the second frame is a motion picture, dithering is performed using one or more dither mask patterns that have a fewer number of vertical lines than dither mask patterns used to perform dithering when the second frame is a still image.
10. The method as claimed in claim 9, wherein dithering is performed using one or more dither mask patterns that have one less vertical line than dither mask patterns used to perform dithering when the second frame is a still image.
11. The method as claimed in claim 9, wherein said one or more dither mask patterns having fewer vertical lines is generated by not selecting one or more vertical lines of the dither mask patterns used to perform dithering when the second frame is a still image.
12. The method as claimed in claim 11, wherein the one or more vertical lines of the dither mask patterns that are not selected are controlled based on a pixel clock.
13. The method as claimed in claim 9, wherein said dithering includes:
applying a first one of the dither mask patterns having said fewer number of vertical lines to the second frame; and
applying subsequent dither mask patterns to the second frame that have a same number of vertical lines as dither mask patterns used to perform dithering when the second frame is a still image.
14. The method as claimed in claim 9, further comprising:
combining dither mask patterns of the first and second frames when the second frame is determined to be a motion picture, said combination being perceived by a viewer different as patterns different from a stripe pattern.
15. The method of claim 14, wherein said combination is perceived as a grating pattern.
16. An apparatus for processing video data of a display device, comprising:
a motion detection circuit to compare first and second frames to determine whether the second frame corresponds to a motion picture or a still image; and
a dithering circuit to perform a dithering method to display the video data on the display device, the dithering method performed being based on whether the second frame is a motion picture or still image, wherein if the second frame is a motion picture, dithering is performed using one or more dither mask patterns that have a fewer number of vertical lines than dither mask patterns used to perform dithering when the second frame is a still image.
17. The apparatus as claimed in claim 16, wherein dithering is performed using one or more dither mask patterns that have one less vertical line than dither mask patterns used to perform dithering when the second frame is a still image.
18. The apparatus as claimed in claim 16, wherein said one or more dither mask patterns having fewer vertical lines is generated by not selecting one or more vertical lines of the dither mask patterns used to perform dithering when the second frame is a still image.
19. The apparatus as claimed in claim 18, wherein the one or more vertical lines of the dither mask patterns that are not selected are controlled based on a pixel clock.
20. The apparatus as claimed in claim 16, wherein said dithering circuit:
applies a first one of the dither mask patterns having said fewer number of vertical lines to the second frame; and
applies subsequent dither mask patterns to the second frame that have a same number of vertical lines as dither mask patterns used to perform dithering when the second frame is a still image.
21. The apparatus as claimed in claim 16, further comprising:
a circuit to combine dither mask patterns of the first and second frames when the second frame is determined to be a motion picture, said combination being perceived by a viewer different as patterns different from a stripe pattern.
22. The apparatus as claimed in claim 21, wherein said combination is perceived as a grating pattern.
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 portable electronic device charger comprising:
a charger housing having a coupler portion adapted to engage a cigarette lighter source and having a body portion;
an electrical contact extending from the coupler portion and adapted to electrically engage said cigarette lighter power source; and
an electrical circuit intermediate between said power source and a portable electronic device, said circuit adapted to sense the input voltage of said source and prevent current flow to said portable electronic device when the input voltage is below a preselected threshold.
2. The charger of claim 1 further comprising an electrical subcircuit for metering current to said device at a preselected voltage.
3. The charger of claim 1 wherein the preselected voltage threshold is between 12 and 13.6 volts.
4. The charger of claim 1 further comprising an LED indicating said electrical contacts are in electrical engagement with said cigarette lighter power source.
5. The charger of claim 1 further comprising a manual switch in electrical contact with said electrical circuit, said switch in an off position adapted to prevent current flow to said device.
6. The charger of claim 4 further comprising a manual switch, said switch in an off position selectively deactivating said LED.
7. The charger of claim 1 further comprising an air purification system within said charger housing.
8. The charger of claim 1 wherein said charger housing is adapted for docking said device.
9. The charger of claim 1 further comprising an insulated electrical cable extending from said charger housing for coupling said device.
10. A portable electronic device charger comprising:
a charger housing having a coupler portion adapted to engage a cigarette lighter power source and having a body portion;
electrical contacts extending from said coupler portion and adapted to engage said cigarette lighter power source;
an LED within said charger housing indicating said electrical contacts are in electrical engagement with said cigarette lighter power source; and
a manual switch to selectively deactivate said LED.
11. The charger of claim 10 further comprising an air purification system.
12. The charger of claim 11 further comprising a control for selectively energizing both the charger and said air purification system, said controller in another position only activating one of said charger air purification system functions.
13. The charger of claim 11 wherein said air purification system comprises an ionization source.
14. A portable electronic device charger comprising:
a charger housing having a coupler portion, a body portion and a flexible portion therebetween;
an electrical contact extending from the coupler portion and adapted to electrically engage said cigarette lighter power source; and
a connector complementary to a portable electronic device in electrical contact between said power source and said device.
15. The charger of claim 14 further comprising an electrical circuit intermediate between said power source and a portable electronic device, said circuit adapted to sense the input voltage of said source and prevent current flow to said portable electronic device when the input voltage is below a preselected threshold.
16. The charger of claim 14 further comprising an electrical subcircuit for metering current to said device at a preselected voltage.
17. The charger of claim 14 further comprising an insulated electrical cable extending from said charger housing for coupling said device.
18. The charger of claim 14 wherein the flexible portion comprises a first ball joint fitting.
19. The charger of claim 18 further comprising a second ball joint fitting disjointed from the first ball joint fitting.
20. The charger of claim 18 further comprising a covering over the first ball joint fitting.
21. The charger of claim 14 wherein the flexible portion comprises a reticulated elastomeric tube member.
22. A process for charging a portable electronic device comprising the steps of:
electrically coupling a charger to a vehicle power supply;
coupling said charger to said device;
sensing a power supply voltage is greater than a preselected threshold; and
metering current from said power supply to said device by way of said charger.
23. The process of claim 22 further comprising the step of: activating an indicator LED upon said charger coupling said power supply.
24. The process of claim 23 wherein said indicator LED is manually activated.