Abstract:
A driving device includes a plurality of transmitters. Each transmitter includes a first current source, a second current source, a third current source, a fourth current source, a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first and the fourth switches are controlled by a first control signal. The second and the third switches are controlled by a second control signal. The second switch is coupled to the first switch. The third switch is coupled to the first current source. The fourth switch is coupled to the third switch and the second current source. The fifth and the sixth switches are controlled respectively by a third and a fourth control signal. The fifth switch is coupled to the third current source and the first switch. The sixth switch is coupled to the second switch and the fourth current source.
Abstract:
A flat panel display comprises the following components. A display module has a lower glass substrate for fabricating thin film transistors, an upper glass substrate for fabricating a color filter, and a displaying molecule layer inserted between the lower glass substrate and the upper glass substrate. The lower glass substrate is connected electrically to a control circuit board via a flexible printed circuit board for driving the thin film transistors. And a backlight unit is fabricated beneath the display module and has a lightguide, a lamp disposed aside the lightguide to emit lights into the lightguide in the edgelight form, and a plurality of optical films disposed on the lightguide for scattering the lights emitted from the lightguide uniformly. The backlight unit comprises a sensor board disposed beneath the lightguide for receiving inputting signals from a signal stylus above the flat panel display. And the sensor board has a reflector surface layer for reflecting lights dispersed from a lower surface of the lightguide.
Abstract:
A data switching circuit is provided. The circuit includes a control unit and a switching unit. The control unit provides a switching signal. The switching unit has N input ends and (N+1) output ends. The switching unit receives the switching signal. If N is an integer number and 1≦i≦N, the switching unit turns on both the connection between the i-th input end and the i-th output end and the connection between a dummy data and the (N+1) output end as the switching signal takes a first status. The switching unit turns on both the connection between another set of dummy data and the first output end and the connection between the i-th input end and the (i+1)-th output end as the switching signal takes a second status.
Abstract:
A display panel is disclosed. The display units with the same position at odd rows and even rows are electrically coupled to different data lines, such that most of the time each of the data lines on the display panel is maintained on a single polarity, respectively. Accordingly, the swing voltage of the data lines on the display panel is reduced when scanning an image, such that the power consumption of the display panel is further reduced in order to achieve the object of saving power.
Abstract:
An exemplary embodiment provides a system for detecting guard interval size and mode of a broadcasting signal comprising m potential guard interval size varieties and n potential mode varieties, in which each potential mode defines an OFDM symbol period. A detection method implemented by the system is also provided. The system comprises an ADC, n mode detectors, and an arbitrator. The ADC samples the broadcasting signal to form a digital signal. Each mode detector is associated with a presuming mode and OFDM symbol period, synchronously receiving the digital signal from the ADC and performing detection processes based thereon, and n corresponding flags are generated to indicate the detection results. The arbitrator is coupled to the outputs of the mode detectors, observing the flags generated therefrom to determine the guard interval size and mode of the broadcasting signal. When the guard interval size and mode of the broadcasting signal are determined by one of the mode detectors, the arbitrator further terminates the operations of the other mode detectors.
Abstract:
A method of communication channel estimation between a transmitter and a receiver is provided. The method includes the step (a): receiving at a first interval a first signal transmitted by the transmitter and obtaining a first channel characteristic corresponding to the first signal; (b): receiving at a second interval a second signal transmitted by the transmitter and obtaining a second channel characteristic corresponding to the second signal; (c) obtaining a value based on the first channel characteristic and the second channel characteristic; and (d) selecting the second channel characteristic or an estimated channel characteristic based on the value.
Abstract:
A signal transmission system of a flat panel device includes an encoder, a transmitter, a receiver, and a decoder. The encoder converts a digital signal to a switch control signal. The transmitter includes 4n signal-lines for transmitting a current signal according to the switch control signal. The receiver includes 4n terminations, a plurality of terminal resistors, and a plurality of comparators. The receiver generates a group of voltage levels according to the current signal. Each comparator is coupled between any two terminations so as to generate a group of voltage differences. The decoder converts the group of voltage differences to the digital signal.
Abstract:
A method for dynamically adjusting the power consumption of a multi-carrier receiver and a multi-carrier receiver with dynamically power adjustment. The method includes receiving a multi-carrier signal, wherein the multi-carrier signal comprises a plurality of sub-carriers. Channel characteristics of each sub-carrier are estimated according to the demodulated multi-carrier signal. ICI is estimated from the demodulated multi-carrier signal. A system performance is detected. The estimated ICI is subtracted when the ICI exceeds an ICI threshold and the system performance is less than a system performance threshold. The demodulated multi-carrier signal is then equalized is based on the estimated channel characteristics, and the system performance is updated according to the equalized multi-carrier signal.
Abstract:
A method of generating a smoothed transport stream to an MPEG decoder for a diversity combine digital television receiver includes generating a plurality of synchronization clocks and demodulated signals according to a plurality of digital television signals received from a plurality of antennas; monitoring a signal quality associated with each of the digital television signals; combining at least demodulated signals having a signal quality being greater than a predetermined threshold to thereby form a combined signal; generating transport stream packets according to the combined signal; selecting a synchronization signal corresponding to a digital television signal having a signal quality being greater than a second predetermined threshold as a selected synchronization signal; and generating a smoothed transport stream having packets being uniformly spaced according to the transport stream packets and the selected synchronization signal.
Abstract:
A signal processing apparatus is provided. The signal processing apparatus includes an inner-code decoder, an outer-code decoder, and an error detection unit. The inner-code decoder decodes an input data stream to generate a first output data stream, wherein the input data stream is coded using a concatenated coding scheme including an outer coding and an inner coding. The outer-code decoder decodes the first output data stream to generate a second output data stream. The error detection unit performs an error detection upon the second output data stream to generate an error detection result. The decision logic sets error indication information of the second output data stream according to at least the error detection result.