What is claimed is:
1. A method of driving a plasma display panel having a plurality of first electrodes, a plurality of second electrodes adjacently disposed alternately, and a plurality of third electrodes formed to cross said first and second electrodes, comprising the steps of:
carrying out an address discharge between said second electrodes and said third electrodes;
carrying out an auxiliary discharge to decrease the volume of wall charges, accumulated on a display cell in which a sustain discharge is not intended, to a level which cannot generate a sustain discharge; and
carrying out a sustain discharge by alternately applying sustain pulses to said first and second electrodes.
2. The method of driving the plasma display panel as claimed in claim 1, further comprising the steps of:
generating a discharge in a selective cell by applying a voltage pulse, with the third electrode side set to have a first polarity and the second electrode side set to have a second polarity;
carrying out an address discharge to form wall charges of a first polarity on at least said second electrodes, with the first electrode side set to have a first polarity with respect to said second electrodes, and also to form wall charges of a second polarity on the first electrode side; and
applying a voltage pulse to said first or third electrodes or to both electrodes so as to set the third electrode side to have a first polarity and to set the first electrode side to have a second polarity, thereby to generate a discharge in a discharge cell that starts the discharge without an application to this cell a voltage pulse that brings about an address discharge in said third electrodes.
3. The method of driving the plasma display panel as claimed in claim 1, wherein a voltage to be applied to said third electrodes when carrying out the auxiliary discharge is equivalent to a voltage of an address pulse for carrying out an address discharge.
4. The method of driving the plasma display panel as claimed in claim 1, wherein a voltage to be applied to said second electrodes when carrying out the auxiliary discharge is a voltage which decreases a potential difference between the voltage applied to said second electrodes and a voltage of an additional pulse to be applied to said first electrodes.
5. The method of driving the plasma display panel as claimed in claim 4, wherein the voltage to be applied to said second electrodes when carrying out the auxiliary discharge is equivalent to a voltage of a non-selective electrode of said second electrodes during an address period.
6. The method of driving the plasma display panel as claimed in claim 1, wherein said first electrodes and said second electrodes are disposed in parallel alternately, and said third electrodes are orthogonal with said first and second electrodes.
7. A method of driving a plasma display panel having a plurality of first electrodes, a plurality of second electrodes adjacently disposed alternately, and a plurality of third electrodes formed to cross said first and second electrodes, comprising the steps of:
carrying out an address discharge between said second electrodes and said third electrodes;
carrying out a sustain discharge by alternately applying sustain pulses to said first and second electrodes; and
carrying out an auxiliary discharge of a scale larger than the scale of the sustain discharge carried out immediately before.
8. The method of driving the plasma display panel as claimed in claim 7, further comprising the steps of:
generating a discharge in a selective cell by applying a voltage pulse, with the third electrodes side set to have a first polarity and the second electrodes side set to have a second polarity;
forming wall charges of a first polarity on at least said second electrodes, with the first electrodes side set to have a first polarity with respect to said second electrodes, and also forming wall charges of a second polarity on the first electrodes side; and
applying a voltage pulse to said third or second electrodes or to both electrodes so as to set the third electrodes side to have a first polarity and to set the second electrodes side to have a second polarity.
9. The method of driving the plasma display panel as claimed in claim 7, wherein a voltage to be applied to said third electrodes when carrying out the auxiliary discharge is equivalent to a voltage of a voltage pulse to be applied to said third electrodes in order to execute an address discharge during an address period.
10. The method of driving the plasma display panel as claimed in claim 7, wherein a voltage to be applied to said third electrodes when carrying out the auxiliary discharge has a polarity opposite to the polarity of the potentials of said second and third electrodes during a sustain discharge period.
11. The method of driving the plasma display panel as claimed in claim 7, wherein a voltage to be applied to said second electrodes when carrying out the auxiliary discharge is equivalent to a voltage selectively applied to said second electrodes at the time of carrying out an address discharge.
12. The method of driving the plasma display panel as claimed in claim 7, wherein a voltage to be applied to said first electrodes when carrying out the auxiliary discharge is a voltage having a polarity opposite to the polarity of said second electrodes.
13. The method of driving the plasma display panel as claimed in claim 12, wherein the voltage to be applied to said first electrodes when carrying out the auxiliary discharge is equivalent to a voltage to be applied to said first electrodes at the time of carrying out an address discharge.
14. The method of driving the plasma display panel as claimed in claim 7, wherein the auxiliary discharge is carried out once in a plurality of sub-fields.
15. The method of driving the plasma display panel as claimed in claim 14, wherein the auxiliary discharge is carried out once in one frame or in one field.
16. The method of driving the plasma display panel as claimed in claim 7, wherein said first electrodes and said second electrodes are disposed in parallel alternately, and said third electrodes are orthogonal with said first and second electrodes.
17. A method of driving a plasma display panel having a plurality of first electrodes, a plurality of second electrodes adjacently disposed alternately, and a plurality of third electrodes formed to cross said first and second electrodes, for applying at a reset timing an erasing pulse having a dull inclination with respect to said second electrodes to which a scan pulse is applied, comprising the step of:
steeply changing a pulse voltage until when the pulse voltage becomes equivalent to a voltage of the scan pulse, at an end stage of the erasing pulse.
18. The method of driving the plasma display panel as claimed in claim 17, wherein said first electrodes and said second electrodes are disposed in parallel alternately, and said third electrodes are orthogonal with said first and second electrodes.
19. A plasma display panel comprising:
a plurality of first electrodes;
a plurality of second electrodes adjacently disposed alternately with said first electrodes;
a plurality of third electrodes formed to cross said first and second electrodes; and
a control circuit for having an address discharge carried out during said second electrodes and the third electrodes, wherein said control circuit has a sustain discharge carried out to decrease the volume of wall charges, accumulated on a display cell in which a sustain discharge is not intended, to a level which cannot generate a sustain discharge.
20. The plasma display panel as claimed in claim 19, wherein said first electrodes and said second electrodes are disposed in parallel alternately, and said third electrodes are orthogonal with said first and second electrodes.
21. A plasma display panel comprising:
a plurality of first electrodes;
a plurality of second electrodes adjacently disposed alternately with said first electrodes;
a plurality of third electrodes formed to cross said first and second electrodes; and
a control circuit for having an address discharge carried out during said second electrodes and said third electrodes, wherein said control circuit has an auxiliary discharge carried out in a scale larger than the scale of a sustain discharge carried out immediately before.
22. The plasma display panel as claimed in claim 21, wherein said first electrodes and said second electrodes are disposed in parallel alternately, and said third electrodes are orthogonal with said first and second electrodes.
23. A method of driving a plasma display panel having a plurality of first electrodes, a plurality of second electrodes adjacently disposed alternately, and a plurality of third electrodes formed to cross said first and second electrodes, comprising the steps of:
carrying out an address discharge between said second electrodes and said third electrodes; and
carrying out a sustain discharge by alternately applying sustain pulses to said first and second electrodes, wherein an auxiliary discharge is carried out between said first electrodes and said third electrodes, during the address discharge and the sustain discharge.
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 system for observing a person comprising:
an adjustable strap;
a camera assembly comprising: (i) a camera adapted to produce an image signal corresponding to a perceived image, (ii) a bracket having at least one slot for operably receiving the adjustable strap so that the adjustable strap forms a loop, and (iii) a transmitter for wirelessly transmitting the image signal;
a display device comprising: (i) a receiver for receiving the wirelessly transmitted image signal, and (ii) means for converting the received image signal into a display image that is displayed on the display device;
a stand adapted to support the display device; and
a base unit adapted to receive the display device, the base unit having means for supplying power to the display device.
2. The system of claim 1 wherein the stand comprises:
a base structure;
a support structure adapted to support the display device, the support structure pivotably connected to the base structure; and
means for securing the stand to a surface within a passenger compartment of a vehicle.
3. The system of claim 1 wherein the stand comprises:
a base structure adapted to secure the stand to a surface within a passenger compartment of a vehicle;
a support structure having a front wall, a rear wall, a cavity between the front wall and the rear wall and an open top end forming a passageway into the cavity, the passageway dimensioned so that the display device can be slidably inserted into the cavity through the passageway; and
a cutout in the front wall, the cutout dimensioned and configured to allow unobstructed viewing of a display screen of the display device when the display device is positioned in the cavity and supported by the support structure.
4. The system of claim 1, wherein the base unit comprises:
a bay adapted to support the display device; and
a socket for receiving a 110 V adapter.
5. The system of claim 4 wherein the base unit further comprises a speaker for providing audio.
6. The system of claim 5, wherein the base unit further comprises a volume control button.
7. The system of claim 1, wherein the camera is pivotably connected to the bracket so as to pivot about both an axis substantially parallel with a longitudinal axis of the bracket and an axis perpendicular to the longitudinal axis of the bracket.
8. The system of claim 1, wherein the camera further comprises a lens and at least one infrared led.
9. The system of claim 8, comprising a plurality of the infrared leds positioned proximate to the lens.
10. The system of claim 9, wherein the plurality of infrared leds are positioned in an annular pattern surrounding the leds.
11. The system of claim 1, wherein the display device and the camera each have a port for operably receiving a 12 V adapter.
12. The system of claim 1 wherein the camera is removably connected to the bracket.
13. The system of claim 1 wherein the bracket comprises:
a first flange having a first slot;
a second flange having a second slot;
wherein the first and second slots are configured and spaced from one another so as to facilitate attachment to a vehicle’s head rest support using the adjustable strap; and
wherein the camera is located between the first and second slots.
14. The system of claim 1 wherein the bracket comprises:
a first flange having a first plurality of slots;
a second flange having a second plurality of slots;
wherein the camera is located between the first and second plurality of slots; and
wherein each of the first and second plurality of slots are spaced from one another so as to facilitate attachment to a first post and a second post by sliding a first strap through any one slot of the first plurality of slots and a second strap through any one slot of the second set of slots, the first strap adapted to connect to a first locking tang and the second strap adapted to connect to a second locking tang.
15. The system of claim 1 wherein the bracket comprises:
a first flange comprising a slot;
a second flange comprising a locking tang;
wherein. the camera is positioned between the slot and the locking tang; and
wherein the strap extends through the slot to the locking tang.
16. The system of claim 1 wherein the strap comprises a first end having a stopper and a second end having a plurality of holes.
17. The system of claim 16 wherein the camera assembly further comprises a locking mechanism for locking the strap and wherein the adjustable strap is inserted through the slot so that the stopper is in contact with the bracket and the locking mechanism is inserted through one of the plurality of holes.
18. A portable system for observing a person comprising:
an adjustable strap comprising a first end having a stopper and a second end having a plurality of holes;
a camera assembly comprising: (i) a camera adapted to produce an image signal corresponding to a perceived image, (ii) a bracket having at least one slot for operably receiving the adjustable strap so that the adjustable strap forms a loop, (iii) a locking mechanism for locking the strap, and (iv) a transmitter for wirelessly transmitting the image signal;
wherein the adjustable strap is inserted through the slot so that the stopper is in contact with the bracket and the locking mechanism is inserted through one of the plurality of holes;
a display device comprising: (i) a receiver for receiving the wirelessly transmitted image signal, and (ii) means for converting the received image signal into a display image that is displayed on the display device;
a stand adapted to support the display device; and
a base unit adapted to receive the display device, the base unit having means for supplying power to the display device.