Mstar Semiconductor, Inc.

Ching-Fu Lan

Tai-Lai Tung

Tung-Sheng Lin

You-Tsai Jeng

Chun-Chieh Wang

Chih-Cheng Kuo

Jung-Kuei Chang

Huang-Hsiang Lin

Chun-Chi Su

Hsin-Chuan Kuo

Ying-Chao Chou

Chih-Ching Chao

A television signal processing circuit includes an audio/video (AV) signal generating circuit, an intermediate frequency (IF) mixer, a first filter, a radio-frequency (RF) mixer, a second filter and a digital-to-analog converter (DAC). The AV signal generator generates a digital AV signal. The IF mixer converts the digital AV signal to an IF AV signal. The first filter filters the IF AV signal to generate a filtered IF AV signal. The RF mixer converts the filtered IF AV signal to an RF AV signal. The second filter filters the RF AV signal to generate a filtered RF AV signal. The DAC converts the filtered RF AV signal to an analog AV signal and transmits the analog AV signal to an antenna.

Audiovisual signal processing circuit and associated television signal processing method

By inserting a symbol start tag at a start of a data segment corresponding to each symbol of a multimedia data stream, and by inserting frame start tags at starts of different frames in a start data segment, data signals belonging to different channels can be precisely and rapidly classified and decoded when the multimedia data stream is performed with demodulation.

Decoding method and multimedia playing system

By determining a scaling factor for scaling signals according to a signal having low bit error rates, and by adjusting soft data using the scaling factor, when soft data are simulated using the Gaussian Model having obvious errors with respect to reality, impacts of signals having low bit error rates are effectively amplified so that impacts of signals having high bit error rates are effectively reduced on the contrary. As a result, the obvious errors introduced by using the Gaussian Model and a low broadcast quality of digital television signals caused by said obvious errors can be neutralized.

Soft demapper, calculating system, and method for calibrating soft data of multimedia data stream

An apparatus for estimating channel effects is provided. A receiving module receives first data and first reference information arriving in a first time period, second data and second reference data arriving in a second time period, and third data and third reference data arriving in a third time period. An estimation module estimates channel effects corresponding to the first and third data, and the first, second and third reference data, respectively. A coefficient calculation module performs a Wiener filter coefficient calculation on the channel effects corresponding to the first, second and third reference data to generate a set of time-domain interpolation coefficients. An interpolation module interpolates the channel effects corresponding to the first third data according to the set of time-domain interpolation coefficients to generate a channel effect corresponding to the second data.

Apparatus and method for estimating channel effects

A correcting apparatus for timing recovery of a receiver is provided. The receiver includes a timing recovery module that outputs a first symbol and a second symbol. The correcting apparatus includes: a channel impulse response module, configured to generate a first set of peak times and a second set of peak times according to the first symbol and the second symbol, respectively; and a calculation module, configured to calculate a correction signal according to a relationship between the first and second sets of peak times and to send the correction signal to the timing recovery module.

Correcting apparatus for timing recovery of receiver and method thereof

A digital broadcasting receiving system is provided. A receiving module receives an M number of symbols each carrying an N number of subcarriers of a control signal. A converting module performs FFT on respective ksubcarriers of an isymbol and an (i+1)symbol to generate an (i, k)converted value and an (i+1, k)converted value. A demodulating module performs differential demodulation on the (i, k)and (i+1, k)converted values to generate an (i, k)demodulation value. A combining module soft-combines the (i, 1)demodulation value through the (i, N)demodulation value to generate an iprediction value corresponding to the isymbol. A determining module identifies a synchronization segment in the control signal according to the 1prediction value to the (M&#x2212;1)prediction value.

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Hsinchu County, Taiwan

Ching-Fu Lan