Abstract: A method for enhancing data rate of an advanced micro-controller bus architecture (AMBA) having an AHB system and an APB system includes simultaneously receiving control signals outputted from a plurality of master devices of the AHB system, and controlling a plurality of peripheral slave devices of the APB system according to the control signals outputted from the plurality of master devices.

Abstract: A method and an apparatus of color-space conversion are provided herein. When adjustment of saturation and/or hue is performed on a RGB color signal, pixel luminance will be influenced to some extent. In the conversion method of the present invention, luminance compensation will be performed after global or local adjustment to keep the pixel luminance from being influenced by the color-space conversion. The luminance compensation method is to adjust a compensation value according to a ratio of an adjusted pixel luminance to an original pixel luminance.

Abstract: A state detector of a video device and a state detection method thereof are provided. The state detector includes a first chroma detector, a second chroma detector, and a controller. The first chroma detector and the second chroma detector operate in a first state among a plurality of states. When the second chroma detector is not capable of processing an input signal normally, the controller controls the second chroma detector to switch between the states until the second chroma detector operates in a second state to process the input signal normally, and the first chroma detector is set to operating in the second state. As a result, the quality of a displayed image is improved.

Abstract: An apparatus and a method for filtering noise in an image signal are provided. The apparatus includes an analog-to-digital converter (ADC), a first filter, and a second filter. The ADC receives the image signal and converts the image signal into a digital signal. The first filter receives the digital signal and filters a first noise portion of the digital signal to generate a first signal. The second filter coupled to the first filter receives the first signal and filters a second noise portion of the first signal, wherein the first noise portion is a sampled-based impulse noise, and the second noise portion is a line-based impulse noise.

Abstract: A signal adjusting circuit is provided. The signal adjusting circuit includes a first operational unit, a second operational unit, an auto-gain controller (AGC), a first clamp circuit, and a second clamp circuit is provided. The first operational unit performs an operation to a digital signal and a first gain value, to obtain a first adjusting signal. The second operational unit performs an operation to the digital signal and a second gain value, to obtain a second adjusting signal. The AGC generates a third gain value according to the first adjusting signal. The first clamp circuit receives and restricts the third gain value between a first upper limit and a first lower limit for generating the first gain value. The second clamp circuit receives and restricts the third gain value between a second upper limit and a second lower limit for generating the second gain value.

Abstract: A signal adjusting circuit is provided. The signal adjusting circuit includes a first operational unit, a second operational unit, an auto-gain controller (AGC), a first clamp circuit, and a second clamp circuit is provided. The first operational unit performs an operation to a digital signal and a first gain value, to obtain a first adjusting signal. The second operational unit performs an operation to the digital signal and a second gain value, to obtain a second adjusting signal. The AGC generates a third gain value according to the first adjusting signal. The first clamp circuit receives and restricts the third gain value between a first upper limit and a first lower limit for generating the first gain value. The second clamp circuit receives and restricts the third gain value between a second upper limit and a second lower limit for generating the second gain value.

Abstract: A signal adjusting circuit and a video apparatus thereof are provided. The signal adjusting circuit includes a delay unit, a minimum value acquisition device, and a first operating unit. The delay unit receives a digital signal and delays the digital signal for N periods to serve as a delay signal. The minimum value acquisition device receives the digital signal and acquires a minimum value of the digital signal in every N periods. The first operating unit is coupled to the delay unit and the minimum value acquisition device for operating the delay signal with the minimum value to obtain an adjusting signal.

Abstract: The present invention provides a method of noise reduction applied in digital video signal processing according to the following steps. A video signal is received initially; after the adaptive spatial filtering, a basic signal is generated. The basic signal is then divided into a number of N bandwidth divisions of spatial domain signals. Each spatial domain signal is undergone a corresponding adaptive temporal filtering and a plurality of corresponding temporal filtered signals is generated. Each temporal filtered signal is undergone individual noise estimation, and a corresponding feedback signal is generated in order to control the corresponding adaptive temporal filtering. In the end, all temporal filtered signals are summed up to a processed video signal; where N is a natural number.

Abstract: A method and an apparatus of color-space conversion are provided herein. When adjustment of saturation and/or hue is performed on a RGB color signal, pixel luminance will be influenced to some extent. In the conversion method of the present invention, luminance compensation will be performed after global or local adjustment to keep the pixel luminance from being influenced by the color-space conversion. The luminance compensation method is to adjust a compensation value according to a ratio of an adjusted pixel luminance to an original pixel luminance.

Abstract: A noise estimator device of a video decoder includes a reception end, a low pass filter coupled to the reception end, a delay unit coupled to the reception end, a minimum level estimation unit coupled to the low pass filter for estimating a minimum of a specific number of low-pass results, a difference level estimation unit coupled to the low pass filter, the delay unit, and the minimum level estimation unit for determining a synchronization signal according to a plurality of low-pass results and the minimum of the specific number of the low-pass results, and for estimating a noise level according to the synchronization signal and signals outputted from the delay unit, and an output end coupled to the difference level estimation unit.

Abstract: A method for enhancing data rate of an advanced micro-controller bus architecture (AMBA) having an AHB system and an APB system includes simultaneously receiving control signals outputted from a plurality of master devices of the AHB system, and controlling a plurality of peripheral slave devices of the APB system according to the control signals outputted from the plurality of master devices.

Abstract: A color smooth adjustment device including an input color space converter, a predetermined adjustment circuit, a smoother and a color adjustment circuit is provide. In which, the input color space converter receives an image set signal, converts the image set signal into an HSI signal and outputs the HSI signal. The predetermined adjustment circuit receives the HSI signal a fine-tune signal, selects a corresponding adjustment signal from a built-in look-up table according to the HSI signal and the fine-tune signal, and outputs the adjustment signal. The smoother receives the image set signal and the adjustment signal, and outputs a smooth signal after a smoothing calculation. The color adjustment circuit receives the HSI signal and the smooth signal, performs a color adjustment on the HSI signal according to the smooth signal, and outputs an adjusted HSI signal.

Abstract: The present invention provides a method of noise reduction applied in digital video signal processing according to the following steps. A video signal is received initially; after the adaptive spatial filtering, a basic signal is generated. The basic signal is then divided into a number of N bandwidth divisions of spatial domain signals. Each spatial domain signal is undergone a corresponding adaptive temporal filtering and a plurality of corresponding temporal filtered signals is generated. Each temporal filtered signal is undergone individual noise estimation, and a corresponding feedback signal is generated in order to control the corresponding adaptive temporal filtering. In the end, all temporal filtered signals are summed up to a processed video signal; where N is a natural number.

Abstract: An optical fiber cable connector assembly includes a first tubular housing (1) and a second tubular housing (2) connected to each other by complementary threads (12) and (211). An alignment ferrule (3) positioned within the inner hollow portions of the first housing (1) and the second housing (2) is provided for enclosing and fastening an optical fiber cable (9) therein, and is associated with a coil spring (4) to provide a resilient bumper effect. The rear portion of the alignment ferrule (3) is dimensioned to extend out of the rear end of the second housing (2) a predetermined distance. A coupling nut (5) is slidable axially around the first housing (1) and the second housing (2) for coupling to a corresponding connector.

Abstract: The present invention discloses an optical fiber connector assembly for use in communication systems. The optical fiber connector assembly includes an insulating housing having complementary upper cover and bottom base members and at least one ferrule with the housing disposed longitudinally and parallel to the longitudinal axis at the free end of the housing. A multi-faceted key mechanism within the housing provides a marking feature to prevent improper connection of mating connectors. At the rear end of the bottom base and its corresponding upper cover there is provided a hollow retention bolt which is preassemblable and adapted to retain the optical fiber cable in position and to hold the two half-shells together. A dust-reject cover is provided having cooperating grooved recesses in opposite end walls sized to fit over and be retained on the connector cable when the connector is connected to another optical device and the dust cover must be removed from the housing.