Signal control device, liquid crystal display having the same and signal control method using the same
View Patent ↗Disclosed are a signal control device and a liquid crystal display device having the same. The signal control device includes receivers and data storage units. The receivers receive clock signals and data signals through channels. The data storage units are provided according to channels and store the data signals transmitted through corresponding channels. In addition, the data storage units substantially simultaneously output the data signals in synchronization with a specific clock signal selected from the received clock signals received through the channels.
1. A signal control device, comprising:
a plurality of receivers, each receiver to receive a data signal, a clock signal, and a data enable signal through a corresponding channel among a plurality of channels and to output the data signal, the clock signal, and the data enable signal;
a plurality of data storage units, each data storage unit to receive the data signal and the clock signal output from a corresponding receiver among the receivers, to store the data signal in response to a corresponding write signal among a plurality of write signals, and to output the stored data signal by commonly responding to an activated read signal; and
a controller to provide the activated read signal to the data storage units in response to a data enable signal and any one clock signal transmitted through any one channel of the channels, and to provide the write signals to the data storage units while reading out the data signals from the data storage units.
2. The signal control device of claim 1 , wherein the controller comprises:
a plurality of write signal generators connected between the receivers and the data storage units to generate the write signals in response to the clock signals and the data enable signals output from corresponding receivers, and to provide the write signals to the data storage units; and
a read signal generator connected to one write signal generator of the write signal generators to receive both the any one clock signal and the data enable signal, which are input to the one write signal generator, and to commonly provide the activated read signal to the data storage units.
3. The signal control device of claim 2 , wherein each data storage unit comprises a first port and a second port, which are independently accessible, and in which the first port is accessed by a write signal generated from a corresponding write signal generator, and the second port is accessed by the activated read signal.
4. The signal control device of claim 1 , wherein the activated read signal is activated when a number of clock pulses of the any one clock signal reaches a preset number.
5. The signal control device of claim 4 , wherein the preset number of clock pulses is 32.
6. The signal control device of claim 5 , wherein each data storage unit comprises a dual-port random access memory (RAM).
7. The signal control device of claim 6 , wherein the preset number of clock pluses corresponds to a storage capacity of the dual-port RAM.
8. A liquid crystal display, comprising:
a liquid crystal display panel to display an image in response to driving signals;
a driver to provide the driving signals to the liquid crystal display panel in response to converted data signals and converted clock signals; and
a timing controller to receive data signals and clock signals through a plurality of channels and to output the converted data signals and the converted clock signals to the driver,
wherein the timing controller includes a signal control unit, the signal control unit comprising:
a plurality of receivers, each receiver to receive a data signal among the data signals, a clock signal among the clock signals, and a data enable signal through a corresponding channel among the channels and to output the data signal, the clock signal, and the data enable signal;
a plurality of data storage units, each data storage unit to receive the data signal and the clock signal output from a corresponding receiver among the receivers, to store the data signal in response to a corresponding write signal among a plurality of write signals, and to output the stored data signal in response to an activated read signal; and
a controller to provide the activated read signal to the data storage units in response to a data enable signal and any one clock signal transmitted through any one channel of the channels, and to provide the write signals to the data storage units while the data signals being read out from the data storage units.
9. The liquid crystal display of claim 8 , wherein the controller comprises:
a plurality of write signal generators connected between the receivers and the data storage units to generate the write signals to be provided to the data storage units in response to the clock signals and the data enable signals output from corresponding receivers; and
a read signal generator connected to one write signal generator of the write signal generators to receive both the any one clock signal and the data enable signal input to the one write signal generator, and to commonly provide the activated read signal to the data storage units.
10. The liquid crystal display of claim 8 , wherein the activated read signal is activated when a number of clock pulses of the any one clock signal reaches a preset number.
11. The liquid crystal display of claim 9 , wherein the preset number of clock pulses is 32.
12. The liquid crystal display of claim 10 , wherein each data storage unit comprises a dual-port random access memory (RAM).
13. The liquid crystal display of claim 11 , wherein the preset number of clock pulses corresponds to a storage capacity of the dual-port RAM.