1. An analog LED controller comprising:
a power supply terminal;
a plurality of color LED control circuits comprising a first color LED control circuit, one or more nth color LED control circuits and a Nth color LED control circuit, wherein 1<n>N and N=a total number of the color LED control circuits;
the first color LED control circuit comprising: (1) a first brightness control, (2) a first LED driver circuit coupled with the power supply terminal and the first brightness control, and (3) a first analog LED output terminal coupled to the first LED driver circuit;
each nth color LED control circuit comprising: (1) a nth brightness control, (2) a nth LED driver circuit coupled with the power supply terminal and the nth brightness control, ii and (3) a nth analog LED output terminal coupled to the nth LED driver circuit; and
the Nth color LED control circuit comprising: (1) a Nth brightness control, (2) a Nth LED driver circuit coupled with the power supply terminal and the Nth brightness control, and (3) a Nth analog LED output terminal coupled to the Nth LED driver circuit.
2. The controller as recited in claim 1, wherein the plurality of color LED control circuits are configured to control three or more color LEDs selected from the group of colors consisting essentially of blue, green, red, yellow, white, ultraviolet and infrared.
3. The controller as recited in claim 1, further comprising one or more color LEDs coupled to each of the plurality of analog LED output terminals.
4. The controller as recited in claim 3, wherein the color LEDs comprise one or more blue LEDs, one or more green LEDs and one or more red LEDs.
5. The controller as recited in claim 1, wherein N=3 and further comprising at least one tricolor LED coupled to the plurality of analog LED output terminals.
6. The controller as recited in claim 1, further comprising a set of color LEDs coupled to each of the plurality of analog LED output terminals wherein the color LEDs within each set of color LEDS are connected in parallel.
7. The controller as recited in claim 6, wherein additional LEDs are added to each set of LEDs without having to modify the controller.
8. The controller as recited in claim 1, wherein the brightness controls are coupled to a diagnostic or testing device.
9. The controller as recited in claim 1, further comprising a power supply coupled to the power supply terminal.
10. The controller as recited in claim 1, wherein the brightness controls are manually controlled brightness controls.
11. The controller as recited in claim 1, wherein the brightness controls are automatically controlled brightness controls.
12. The controller as recited in claim 11, wherein the automatically controlled brightness controls comprise a diagnostic or testing device.
13. An analog LED controller comprising:
a power supply terminal;
a plurality of color LED control circuits comprising a first color LED control circuit, one or more nth color LED control circuits and a Nth color LED control circuit, wherein 1<n>N and N=a total number of the color LED control circuits;
the first color LED control circuit comprising: (1) a first brightness control, (2) a first LED driver circuit coupled with the power supply terminal and the first brightness control, and (3) a first analog LED output terminal coupled to the first LED driver circuit;
each nth color LED control circuit comprising: (1) a nth brightness control, (2) a nth LED driver circuit coupled with the power supply terminal and the nth brightness control, ii and (3) a nth analog LED output terminal coupled to the nth LED driver circuit;
the Nth color LED control circuit comprising: (1) a Nth brightness control, (2) a Nth LED driver circuit coupled with the power supply terminal and the Nth brightness control, and (3) a Nth analog LED output terminal coupled to the Nth LED driver circuit; and
wherein the first brightness control, each nth brightness control, and the Nth brightness control are coupled to a diagnostic or testing device.
14. The controller as recited in claim 13, wherein the plurality of color LED control circuits are configured to control three or more color LEDs selected from the group of colors consisting essentially of blue, green, red, yellow, white, ultraviolet and infrared.
15. The controller as recited in claim 13, further comprising one or more color LEDs coupled to each of the plurality of analog LED output terminals.
16. The controller as recited in claim 15, wherein the color LEDs comprise one or more blue LEDs, one or more green LEDs and one or more red LEDs.
17. The controller as recited in claim 13, wherein N=3 and further comprising at least one tricolor LED coupled to the plurality of analog LED output terminals.
18. The controller as recited in claim 13, further comprising a set of color LEDs coupled to each of the plurality of analog LED output terminals wherein the color LEDs within each set of color LEDS are connected in parallel.
19. The controller as recited in claim 18, wherein additional LEDs are added to each set of LEDs without having to modify the controller.
20. The controller as recited in claim 13, further comprising a power supply coupled to the power supply terminal.
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 display comprising:
a pixel part having a memory;
a power supply circuit formed on the same substrate as said pixel part for operating said memory, the power supply circuit activated to generate a set voltage value in response to a sensed transition to a standby operation mode of the display; and
a control circuit writing data in said memory after the voltage of said power supply circuit reaches the set voltage value;
further comprising a scanning line driving circuit for driving scanning lines of the pixel part and a data line driving circuit for driving data lines of the pixel part, and the power supply circuit is not connected to the scanning line driving circuit and the data line driving circuit but connected to the memory of the pixel part.
2. A display comprising:
a pixel part having a memory;
a power supply circuit formed on the same substrate as said pixel part for operating said memory; and
a control circuit writing data in said memory after the voltage of said power supply circuit reaches a set value; wherein
said power supply circuit includes at least a positive voltage generation circuit, and
a power source having higher current drivability than said positive voltage generation circuit is employed as the power source for said memory while said data is written in said memory, and said positive voltage generation circuit is employed as the power source for said memory after said data is completely written;
further comprising a scanning line driving circuit for driving scanning lines of the pixel part and a data line driving circuit for driving data lines of the pixel part, and the power supply circuit is not connected to the scanning line driving circuit and the data line driving circuit but connected to the memory of the pixel part.
3. The display according to claim 2, wherein
said power source having higher current drivability than said positive voltage generation circuit includes either a display panel power source VDD or a standby power source VCC.
4. The display according to claim 1, wherein
said power supply circuit includes a positive voltage generation circuit and a negative voltage generation circuit, and
said negative voltage generation circuit is connected to said memory after temporarily setting a node of said positive voltage generation circuit to a ground potential thereby discharging the same when making transition from a standby operation mode to a general application operation mode.
5. The display according to claim 1, wherein
said control circuit includes an external control circuit for transferring still picture data and a control signal to said memory when writing said data in said memory.
6. The display according to claim 5, wherein
said external control circuit further transmits a signal for starting said power supply circuit to said power supply circuit.
7. The display according to claim 1, wherein said memory includes an SRAM.
8. The display according to claim 1, including either a liquid crystal display or an EL display.
9. A method of controlling a display comprising a pixel part having a memory and a power supply circuit formed on the same substrate as said pixel part for operating said memory, comprising steps of:
sensing a transition to a standby operation mode of the display;
activating said power supply circuit to generate a set voltage value in response to sensing the transition; and
writing data in said memory after the voltage of said power supply circuit reaches said set voltage value;
further comprising a scanning line driving circuit for driving scanning lines of the pixel part and a data line driving circuit for driving data lines of the pixel part, and the power supply circuit is not connected to the scanning line driving circuit and the data line driving circuit but connected to the memory of the pixel part.
10. The method of controlling a display according to claim 9, wherein
said step of writing said data in said memory includes a step of transferring still picture data and a control signal to said memory thereby writing said data.
11. The method of controlling a display according to claim 9, wherein
said step of making the voltage of said power supply. circuit reach said set value includes a step of transmitting a setup completion signal from said power supply circuit to said control circuit thereby sensing that the voltage of said power supply circuit reaches said set value.
12. The method of controlling a display according to claim 9, wherein
said step of making the voltage of said power supply circuit reach said set value includes a step of sensing that the voltage of said power supply circuit reaches said set value on the basis of a lapse of a prescribed time after starting of said power supply circuit.
13. The method of controlling a display according to claim 9, wherein
said step of making the voltage of said power supply circuit reach said set value includes a step of starting said power supply circuit simultaneously with power supply to a display panel, and
said step of writing said data in said memory includes a step of performing operation in a general application operation mode after the voltage of said power supply circuit reaches said set value and thereafter writing said data in said memory when making transition to a standby operation mode.
14. The method of controlling a display according to claim 9, wherein
said step of making the voltage of said power supply circuit reach said set value includes a step of starting said power supply circuit after sensing transition to a standby operation mode, and
said step of writing said data in said memory includes a step of writing said data in said memory after the voltage of said power supply circuit reaches said set value in said standby operation mode.
15. The method of controlling a display according to claim 14, wherein
said step of making the voltage of said power supply circuit reach said set value includes a step of transmitting a setup completion signal from said power supply circuit to said control circuit thereby sensing that the voltage of said power supply circuit reaches said set value.
16. The method of controlling a display according to claim 14, wherein
said step of making the voltage of said power supply circuit reach said set value includes a step of sensing that the voltage of said power supply circuit reaches said set value on the basis of a lapse of a prescribed time after starting of said power supply circuit.
17. A method of controlling a display comprising a pixel part having a memory and a power supply circuit formed on the same substrate as said pixel part for operating said memory, comprising steps of:
making the voltage of said power supply circuit reach a set value; and
writing data in said memory after the voltage of said power supply circuit reaches said set value; wherein
said power supply circuit includes at least a positive voltage generation circuit, and
said step of writing said data in said memory includes a step of employing a power source having higher current drivability than said positive voltage generation circuit as the power source for said memory while writing said data in said memory and employing said positive voltage generation circuit as the power source for said memory after writing said data;
further comprising a scanning line driving circuit for driving scanning lines of the pixel part and a data line driving circuit for driving data lines of the pixel part, and the power supply circuit is not connected to the scanning line driving circuit and the data line driving circuit but connected to the memory of the pixel part.
18. The method of controlling a display according to claim 17, wherein
said power source having higher current drivability than said positive voltage generation circuit includes either a display panel power source VDD or a standby power source VCC.
19. A method of controlling a display comprising a pixel part having a memory and a power supply circuit formed on the same substrate as said pixel part for operating said memory, comprising steps of:
making the voltage of said power supply circuit reach a set value; and
writing data in said memory after the voltage of said power supply circuit reaches said set value; wherein
said power supply circuit includes a positive voltage generation circuit and a negative voltage generation circuit,
said method further including a step of connecting said negative voltage generation circuit to said memory after temporarily setting a node of said positive voltage generation circuit to a ground potential thereby discharging the same when making transition from a standby operation mode to a general application operation mode.