Abstract:
A method to assess signal transmission quality and the adjust method thereof are proposed. First, different time points of a control signal at a receiving end are acquired and the number of signal transitions in a predetermined time interval is counted. Next, the number of signal transitions is recorded and compared to a reference value to obtain a comparison result. The quality of the control signal is then determined based on the comparison result. The parameter setting of the receiving end is adjusted according to the quality of the control signal received by the receiving end to get a better performance setting.
Abstract:
A frame synchronization method includes: temporarily storing input data of at least one source frame in a frame buffer according to an input time sequence; generating an output time sequence according to the input time sequence and a delay time; generating output data of a destination frame according to the input data of the source frame; and outputting the output data of the destination frame according to an output time sequence; wherein an average frame rate of the source frame is substantially the same as that of the destination frame.
Abstract:
A method for adjusting a phase of a sampling frequency of ADC is disclosed. The method includes converting an analog signal into a first digital signal according to a first phase of the sampling frequency during a first time interval; calculating a first value according to the first digital signal; converting the analog signal into a second digital signal according to a second phase of the sampling frequency during a second time interval; calculating a second value according to the second digital signal; and adjusting the phase of the sampling frequency according to the first value and the second value.
Abstract:
The present invention discloses a signal receiving method for determining a transmission format of an input signal and a related signal receiving circuit. The signal receiving method includes: receiving the input signal; generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and determining the transmission format of the input signal according to the signal detecting result. The signal receiving circuit includes: an input interface, for receiving an input signal; a detecting module, for generating a signal detecting result corresponding to at least a signal transmission channel of a plurality of signal transmission channels according to an output result of the signal transmission channel; and a determining unit, for determining the transmission format of the input signal according to the signal detecting result.
Abstract:
Apparatus for driving a display device and method therefor. The apparatus is used for controlling the display device to display video frames according to a video signal. The apparatus includes a controller, a first driving circuit, and a second driving circuit. The controller is used for generating a first control signal and a second control signal according to the video signal. The first driving circuit, including m first driving devices, is used for enabling the display device, according to the first control signal, to display a portion of a video frame corresponding to the video signal. The second driving circuit, including n second driving devices, is used for enabling the display device, according to the second control signal, to display a portion of the video frame corresponding to the video signal, wherein m and n are two different positive integers.
Abstract:
The invention relates to an image processing chip and related method. The image processing chip includes a pin for receiving a composite signal; a synchronization signal detecting circuit, coupled to the pin, for extracting a synchronization signal from the composite signal; a clamping circuit, coupled to the pin, for adjusting a voltage level of the composite signal according to the synchronization signal; and an analog to digital converter, coupled to the pin, for generating a video signal by sampling the composite signal.
Abstract:
A phase locked loop circuit includes a phase locked loop for generating a plurality of first output signals each having a different phase but a same frequency according to a first reference signal; a control loop for generating a phase selection signal according to a second reference signal and a second output signal outputted by the phase locked loop, wherein a frequency of the second output signal is substantially equal to the frequency of the first output signals; and a phase selector for receiving the first output signals and the phase selector signal, and according to the phase selector signal selecting one of the first output signals to be a first feedback signal; wherein the first feedback signal is inputted to the phase locked loop.
Abstract:
A noise processing device and its method are provided for a video/audio system having a high definition multimedia interface (HDMI). The noise processing device includes a detecting unit, a signal generating unit, and a decision unit. The noise processing method includes using the detecting unit to monitor a variation related to an audio signal and generate a detecting signal accordingly; using the signal generating unit to produce an adjustment signal according to the detecting signal; and using the decision unit to produce an output audio signal according to the audio signal and the adjustment signal. Another embodiment of the noise processing device includes a compensation tracking unit having a control unit. The compensation tracking unit produces an output audio signal according to a difference between the output audio signal itself and the audio signal and a gain of the control unit.
Abstract:
A method of adjusting a sampling condition to generate a sampling clock in an analog to digital converter includes performing an analog to digital conversion on an analog input signal to thereby produce a digital sampled signal having a plurality of samples; calculating a difference value between two adjacent samples in the digital sampled signal; comparing the difference value with a threshold; adding the difference value into a sum of differences value if the difference value is greater than the threshold; and generating the sampling clock for the analog to digital converter according to the sum of differences value.
Abstract:
The present invention discloses an apparatus for evaluating a transmission quality of data display system and its related method. The method comprises: mixing at least one pattern in a first signal of an image signal to produce a mixed signal in the transmitter, wherein said pattern is known to said receiver; transferring the mixed signal to the receiver through a channel; separating the received mixed signal into a received signal and a received pattern in the receiver; and evaluating the transmission quality of the display system according to the pattern and the received pattern.