Abstract: A source driving circuit for a display device may include a first latch configured to store first video data corresponding to a first horizontal line and a second latch configured to store second video data corresponding to a second horizontal line following the first horizontal line. The first and second latches may alternately store video data of different horizontal lines. The source driving circuit may further include a digital-to-analog converter (DAC) configured to convert the stored first and second video data into analog signals, a first sample-and-hold circuit configured to sample and store an output signal of the DAC, a second sample-and-hold circuit configured to sample and store an output signal of the first sample-and-hold circuit, and an output switch configured to provide an output signal of the second sample-and-hold circuits to the display panel.

Abstract: A current mode transmitter includes a first sink current path, through which a current flows from an output port according to a first bias voltage, a charge error canceller, which supplies a current from a high power supply voltage to a current control port in response to an input signal and counteracts a variation of a second bias voltage in response to an inverted input signal, which has an opposite polarity to that of the input signal, and the second bias voltage, and a second sink current path, which sinks current supplied from the output port in response to the second bias voltage and the inverted input signal, the second sink current path being controlled by the current control port. The input signal and the inverted input signal are complementary.

Abstract: Provided are a receiver and a transceiver for multi-level current-mode signaling, which together may reduce the number of bus lines and increase a data bandwidth. A transmitter transmits one reference current and a multi-level data current. On the basis of the reference current signal received from the transmitter, a receiver generates plural internal reference currents for determining the multi-level data current received from the transmitter, and converting the received multi-level data current into a data voltage having the desired level corresponding to the data that was transmitted.

Abstract: For generating source line voltages in a display device, gray scale data is received at a source driver for a first sub-pixel of a pixel. The source driver generates a first source line voltage for the first sub-pixel and a second source line voltage for a second sub-pixel from the gray scale data of the first sub-pixel. Thus, data transfer rate and/or data buses are minimized for in turn minimizing power consumption and EMI (electromagnetic interference).

Abstract: A pseudo differential current mode receiver includes a regulated cascode buffer for buffering a received data current to generate a buffered data current with cascode-reduced input impedance and cascode-increased output impedance. In addition, a signal converter generates an output signal indicating a difference between the buffered data current and a reference current. The reference current may also be received and buffered by a regulated cascode buffer with cascode-reduced input impedance and cascode-increased output impedance.

Abstract: A source driving circuit for a display device may include a first latch configured to store first video data corresponding to a first horizontal line and a second latch configured to store second video data corresponding to a second horizontal line following the first horizontal line. The first and second latches may alternately store video data of different horizontal lines. The source driving circuit may further include a digital-to-analog converter (DAC) configured to convert the stored first and second video data into analog signals, a first sample-and-hold circuit configured to sample and store an output signal of the DAC, a second sample-and-hold circuit configured to sample and store an output signal of the first sample-and-hold circuit, and an output switch configured to provide an output signal of the second sample-and-hold circuits to the display panel.

Abstract: A gamma correction apparatus and methods thereof. The gamma correction apparatus may include at least one switching unit and a digital-to-analog converter, for example a capacitor digital-to-analog converter. The switching unit may transfer a first voltage to the digital-to-analog converter in response to a control signal. The digital-to-analog converter may generate a plurality of linear lines based at least in part on the first voltage to approximate a non-linear curve by generating a voltage transmission characteristic curve. A received digital signal may be converted into an analog signal based on the generated voltage transmission characteristic curve.

Abstract: A regulated cascode amplifier includes a main cascode amplifier and a feed-back amplifier. The main cascode amplifier has an input transistor coupled in a stack with an output transistor at an input control node. The feed-back amplifier including a plurality of transistors with gates of the transistors being coupled together to the input control node and with drains of the transistors being coupled together at a gate of the output transistor. The transistors of the feed-back amplifier are biased from connections to the main cascode amplifier for smaller chip area.

Abstract: A current mode transmitter includes a first sink current path, through which a current flows from an output port according to a first bias voltage, a charge error canceller, which supplies a current from a high power supply voltage to a current control port in response to an input signal and counteracts a variation of a second bias voltage in response to an inverted input signal, which has an opposite polarity to that of the input signal, and the second bias voltage, and a second sink current path, which sinks current supplied from the output port in response to the second bias voltage and the inverted input signal, the second sink current path being controlled by the current control port. The input signal and the inverted input signal are complementary.

Abstract: A current-mode data receiving device with sufficient fidelity for a display system. The receiving device includes: a current mirror, where an input current signal and a feedback current signal is received at a first terminal thereof and an output current signal with a current magnitude proportional to (e.g., equal to) the sum of the magnitudes of the input current signal and of the feedback current signal is output through a second terminal thereof; and a feedback unit that uses the magnitude of the output current signal as feedback to determined the magnitude and direction of the feedback current to the first terminal, and causes a decreases in the magnitude of the output current signal by a predetermined amount if the output current signal is at a high level, and increases the current magnitude of the output current signal by the predetermined amount if the magnitude of the output current signal is at a low level.

Abstract: A current-mode data receiving device with sufficient fidelity for a display system. The receiving device includes: a current mirror, where an input current signal and a feedback current signal is received at a first terminal thereof and an output current signal with a current magnitude proportional to (e.g., equal to) the sum of the magnitudes of the input current signal and of the feedback current signal is output through a second terminal thereof; and a feedback unit that uses the magnitude of the output current signal as feedback to determined the magnitude and direction of the feedback current to the first terminal, and causes a decreases in the magnitude of the output current signal by a predetermined amount if the output current signal is at a high level, and increases the current magnitude of the output current signal by the predetermined amount if the magnitude of the output current signal is at a low level.