What is claimed is:
1. A power supply module comprising:
a first power supply unit for converting an external AC voltage inputted thereto to a DC voltage, outputting the DC voltage, and supplying the external AC voltage to other power supply units; and
one or a plurality of second power supply units for converting an external AC voltage inputted thereto to a DC voltage and outputting the DC voltage, said second power supply units being connected in parallel with said first power supply unit,
wherein an arbitrary power supply capacity is obtained by setting a number of said second power supply units connected in parallel with said first power supply unit.
2. A power supply module according to claim 1, wherein
both said first power supply unit and said second power supply units can be attached to an attachment rail, and
when expanding a power supply capacity, said second power supply unit is attached to said attachment rail and connected in parallel with said first power supply unit.
3. A power supply module according to claim 1, wherein said first and second power supply units have an identical power supply capacity.
4. A power supply module according to claim 1, wherein said first power supply unit comprises:
an AC input terminal for inputting an external AC voltage;
a first power supply circuit for converting the external AC voltage supplied from said AC input terminal connected thereto to a DC voltage and outputting said DC voltage;
a first DC output terminal for outputting the DC voltage supplied from said first power supply circuit connected thereto; and
a first AC output side connector for outputting the external AC voltage supplied from said AC input terminal connected thereto, to outside, said first AC output side connector being provided on a parallel connection face for said second power supply units,
said second power supply unit comprises:
a second AC input side connector provided on a first parallel connection face for parallel connection with said first power supply unit, and connected to said first AC output side connector of said first power supply unit;
a second power supply circuit for converting an external AC voltage supplied from said second AC input side connector to a DC voltage and outputting the DC voltage;
a second DC output terminal for outputting the DC voltage supplied from said second power supply circuit connected thereto; and
a second AC output side connector connected to said second AC input side connector and provided on a second parallel connection face for parallel connection with other adjacent power supply units.
5. A power supply module according to claim 4, wherein
said first power supply unit comprises a first DC output side connector connected to said first power supply circuit on said parallel connection face, and
said second power supply unit comprises:
a second DC input side connector connected to said first DC output side connector of said first power supply unit on said first parallel connection face; and
a second DC output side connector connected to said second DC input side connector on said second parallel connection face.
6. A power supply module according to claim 1, wherein each of said first and second power supply units comprises:
an AC input terminal for inputting an external AC voltage;
a power supply circuit for converting the external AC voltage supplied from said AC input terminal connected thereto to a DC voltage and outputting said DC voltage;
a DC output terminal for outputting the DC voltage supplied from said power supply circuit connected thereto;
an AC input side connector provided on a first parallel connection face for another power supply unit, and
an AC output side connector for outputting the external AC voltage supplied from said AC input terminal to outside, said AC output side connector being connected to said AC input terminal and said AC input side connector and provided on a second parallel connection face for another power supply unit.
7. A power supply module according to claim 6, wherein each of said first and second power supply units comprises:
a DC input side connector on said first parallel connection face;
a DC output side connector connected to said DC input side connector and said power supply circuit on said second parallel connection face.
8. A power supply module according to claim 7, wherein
each of said first and second power supply units comprises a communication line, and
said communication line is connected between said DC input side connector and said DC output side connector.
9. A power supply module according to claim 1, wherein said first power supply unit comprises:
an aluminum electrolytic capacitor for power supply generation in a power supply circuit thereof, and
a life prediction circuit for conducting life prediction of said aluminum electrolytic capacitor based on capacitance degradation thereof.
10. A power supply module according to claim 1, wherein said first power supply unit comprises a microcomputer for conducting power supply control according to contents of communication conducted with outside.
11. A power supply module according to claim 1, comprising a communication unit for conducting communication concerning power supply control between said power supply units and outside, said communication unit being connected in parallel with said power supply units.
12. A power supply module according to claim 1, comprising a branch unit for allowing branch operation according to a load state, said branch unit being connected in parallel with said power supply units.
13. A power supply module according to claim 1, comprising a battery mounting power supply unit for making it possible to supply power to a load as occasion demands, said battery mounting power supply unit being connected in parallel with said power supply units.
14. A power supply module according to claim 1, comprising a battery mounting power supply unit for making possible operation for a peak load, said battery mounting power supply unit being connected in parallel with said power supply units.
15. A power supply unit comprising:
an AC input terminal for inputting an external AC voltage;
a power supply circuit for converting the external AC voltage supplied from said AC input terminal connected thereto to a DC voltage and outputting said DC voltage;
a DC output terminal for outputting the DC output supplied from said power supply circuit connected thereto; and
an AC output side connector connected to said AC input terminal and provided on a first parallel connection face, said AC output side connector being capable of being connected to an AC input side connector of another power supply unit.
16. A power supply unit according to claim 15, comprising a DC output side connector connected to said power supply circuit and provided on the first parallel connection face, said DC output side connector being capable of being connected to an DC input side connector of another power supply unit.
17. A power supply unit according to claim 15, comprising a microcomputer for conducting communication concerning power supply with outside, said microcomputer being connected to said power supply circuit.
18. A power supply unit according to claim 15, comprising a communication line for conducting communication with a communication unit.
19. A power supply supply unit comprising:
an AC input terminal for inputting an external AC voltage;
a power supply circuit for converting the external AC voltage supplied from said AC input terminal to a DC voltage and outputting said DC voltage;
a DC output terminal for outputting the DC output supplied from said power supply circuit to outside;
an AC input side connector for inputting an external AC voltage supplied from another power supply unit, said AC input side connector being provided on a first parallel connection face for parallel connection with another power supply unit; and
an AC output side connector for outputting the external AC voltage to another power supply unit, said AC output side connector being connected to said AC input terminal and said AC input side connector, and provided on a second parallel connection face for parallel connection with another power supply unit.
20. A power supply supply unit comprising:
an AC input terminal for inputting an external AC voltage;
a power supply circuit for converting the external AC voltage supplied from said AC input terminal to a DC voltage and outputting said DC voltage;
a DC output terminal for outputting the DC output supplied from said power supply circuit to outside;
an AC input side connector for inputting an external AC voltage supplied from another power supply unit connected in parallel, said AC input side connector being provided on a first parallel connection face for parallel connection with another power supply unit;
an AC output side connector for supplying the external AC voltage supplied from said AC input terminal or said AC input side connector to another power supply unit connected on second parallel connection face, said AC output side connector being connected to said AC input terminal and said AC input side connector, and provided on said second parallel connection face for parallel connection with another power supply unit;
a DC input side connector for inputting a DC voltage supplied from another power supply unit connected in parallel on said first parallel connection face or a DC voltage supplied from said power supply circuit; and
a DC output side connector for outputting a DC output supplied from said power supply circuit or said DC input side connector to another power supply unit connected in parallel on said second parallel connection face, said DC output side connector being connected to said power supply circuit and said DC input side connector.
21. A power supply unit according to claim 20, comprising a communication line between said DC input side connector and said DC output side connector.
22. A power supply unit according to claim 20, wherein
said power supply unit comprises:
a casing having an attachment groove for engaging with an attachment rail, on a rear face thereof;
one or a plurality of circuit boards disposed in said casing; and
an input side connector, an output side connector, and a plurality of connection metal fittings provided on said circuit boards,
electronic parts forming a power supply circuit are mounted on at least one of said circuit boards,
said input side connector forms said AC input terminal,
said output side connector forms said DC output terminal, and
said plurality of connection metal fittings form a connection line between said AC input side connector and said AC output side connector and a connection line between said DC input side connector and said DC output side connector, and both ends of said plurality of connection metal fittings extend between said first parallel connection face and said second parallel connection face in said casing and form connector terminals respectively of said AC input side connector, said AC output side connector, said DC input side connector, and said DC output side connector.
23. A power supply module, comprising:
a plurality of power supply units; and
an intermediate connector for connecting said power supply units in parallel,
wherein each of said power supply unit comprises:
a casing having an attachment groove for engaging with an attachment rail, on a rear face thereof;
one or a plurality of circuit boards disposed in said casing; and
an input side connector, an output side connector, and a plurality of connection metal fittings provided on said circuit boards,
electronic parts forming a power supply circuit are mounted on at least one of said circuit boards,
said input side connector forms said AC input terminal,
said output side connector forms said DC output terminal,
said plurality of connection metal fittings form a connection line between said AC input side connector and said AC output side connector and a connection line between said DC input side connector and said DC output side connector, and both ends of said plurality of connection metal fittings extend between said first parallel connection face and said second parallel connection face in said casing and form connector terminals respectively of said AC input side connector, said AC output side connector, said DC input side connector, and said DC output side connector,
on each of said first and second parallel connection faces in said casing, a restraint pin insertion hole is provided and terminal insertion holes are provided in locations that both ends of said connection metal fittings face to, and
said intermediate connector comprises connection terminals which are inserted in terminal insertion holes of two adjacent power supply units attached to said attachment rail and connected to connector terminals formed by connection metal fittings, and a restraint pin which is inserted in said restraint pin insertion hole.
24. A power supply module according to claim 23, wherein
on each of said first and second parallel connection faces in said casing, a plurality of restraint pin insertion holes are provided,
said restraint pin of said intermediate connector can be selectively moved to any of said restraint pin insertion holes.
25. A power supply module according to claim 23, wherein said intermediate connector comprises an indication portion for indicating a connection state of said power supply units.
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 timing controller, comprising:
a line pattern detector configured to divide received data into a plurality of unit blocks and to detect a line polarity of each of a plurality of horizontal lines included in each of the unit blocks; and
a frame pattern detector to generate a polarity control signal to control a data inversion method based on a frame image pattern detected based on line polarities of the respective horizontal lines.
2. The timing controller of claim 1, wherein the line pattern detector comprises:
a first adder to add grayscale values of odd subpixels on each of the horizontal lines so as to obtain a first sum and to add grayscale values of even subpixels on each of the horizontal lines so as to obtain a second sum; and
a line polarity detection block to detect the line polarity of each of the plurality of horizontal lines based on the first sum and the second sum.
3. The timing controller of claim 2, wherein the line polarity detection block comprises:
a subtractor to obtain a difference between the first sum and the second sum; and
a line polarity detector to detect the line polarity of each of the plurality of horizontal lines based on the difference between the first sum and the second sum.
4. The timing controller of claim 3, wherein the line polarity detector detects the polarity of each of the horizontal lines only when the difference between the first sum and the second sum is greater than a predetermined threshold value.
5. The timing controller of claim 3, wherein the line polarity detector changes a method of detecting the line polarity based on a data inversion method of a display device.
6. The timing controller of claim 2, wherein the line pattern detector further comprises:
a line polarity register to store a result of detecting the line polarity.
7. The timing controller of claim 1, wherein the frame pattern detector comprises:
a frame image detection block to determine the frame image pattern based on a result of line polarity detection; and
an inversion method controller to generate the polarity control signal to control the data inversion method based on the frame image pattern.
8. The timing controller of claim 7, wherein the frame image detection block comprises:
a block image detector to detect an image pattern of each of the unit blocks based on the result of the line polarity detection;
a second adder configured to count image patterns coinciding with a first data inversion method among image patterns of the respective unit blocks so as to obtain a third sum and to count image patterns coinciding with a second data inversion method among the image patterns of the respective unit blocks so as to obtain a fourth sum; and
a frame image detector to compare the third sum with the fourth sum and to determine the frame image pattern.
9. The timing controller of claim 8, wherein the first data inversion method is a data inversion method of a display device and the second data inversion method is a data inversion method which does not allow a flicker to occur in the first data inversion method.
10. A display device, comprising:
a panel including a plurality of source lines;
a source driver to output data to drive the plurality of source lines; and
a timing controller to generate a polarity control signal to control a data inversion method with respect to the data.
11. A method of operating a display device, the method comprising:
detecting a line polarity of each of a plurality of horizontal lines included in each of a plurality of unit blocks into which received data is divided; and
generating a polarity control signal to control a data inversion method based on a frame image pattern detected based on line polarities of the respective horizontal lines.
12. The method of claim 11, wherein the detecting the line polarity of each of the plurality of horizontal lines comprises:
obtaining a first sum and a second sum by adding grayscale values of odd subpixels on each of the horizontal lines and adding grayscale values of even subpixels on each of the plurality of horizontal lines; and
detecting the line polarity of each of the plurality of horizontal lines based on the first sum and the second sum.
13. The method of claim 12, wherein the detecting the line polarity of each of the horizontal lines based on the first sum and the second sum comprises:
obtaining a difference between the first sum and the second sum; and
detecting the line polarity of each of the plurality of horizontal lines based on the difference between the first sum and the second sum.
14. The method of claim 13, wherein the detecting the line polarity of each of the plurality of horizontal lines based on the difference is performed only when the difference between the first sum and the second sum is greater than a predetermined threshold value.
15. The method of claim 13, wherein the detecting the line polarity of each of the plurality of horizontal lines based on the difference comprises:
changing a method of detecting the line polarity based on a data inversion method of a display device.
16. The method of claim 12, wherein the detecting the line polarity of each of the horizontal lines further comprises:
storing a result of detecting the line polarity.
17. The method of claim 11, wherein the generating the polarity control signal comprises:
determining the frame image pattern based on a result of detecting the line polarity; and
generating the polarity control signal to control the data inversion method based on the frame image pattern.
18. The method of claim 17, wherein the determining the frame image pattern comprises:
detecting an image pattern of each of the unit blocks based on the result of detecting the line polarity;
obtaining a third sum and a fourth sum by counting image patterns coinciding with a first data inversion method among image patterns of the respective unit blocks and counting image patterns coinciding with a second data inversion method among the image patterns of the respective unit blocks; and
comparing the third sum with the fourth sum and determining the frame image pattern.
19. The method of claim 18, wherein the first data inversion method is a data inversion method of a display device and the second data inversion method is a data inversion method which does not allow a flicker to occur in the first data inversion method.
20. A timing controller, comprising:
a detector to detect an image pattern of data; and
a controller to change a data inversion process based on the detected image pattern.
21. The timing controller of claim 20, wherein the detector detects the image pattern of the data by dividing received data into a plurality of unit blocks and to detect a line polarity of each of a plurality of horizontal lines included in each of the unit blocks.
22. The timing controller of claim 20, wherein the controller changes the data inversion process based on the detected image pattern by generating a polarity control signal to control the data inversion process based on the detected image pattern corresponding to line polarities of the respective horizontal lines.
23. A display apparatus, comprising:
a panel including a plurality of source lines;
a source driver to output data to drive the plurality of source lines; and
a timing controller comprising:
a detector to detect an image pattern of data; and
a controller to change a data inversion process based on the detected image pattern.
24. A method to reduce flickering in a display unit, the method comprising:
detecting an image pattern of data corresponding to a display unit; and
changing a data inversion process based on the detected image pattern.
25. A computer-readable recording medium having embodied thereon a computer program to execute a method, wherein the method comprises:
detecting an image pattern of data corresponding to a display unit; and
changing a data inversion process based on the detected image pattern.