Video system and scaler
AssigneeRealtek Semiconductor Corp.
InventorsJin-Sheng Gong, Wei-Lun Weng, Yu-Pin Lin
Life of this patent
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Abstract
A video system includes a decoder and a scaler. The decoder tracks a video signal, generates a synchronization signal and a frequency offset signal, decodes the video signal, and outputs a decoded signal in accordance with the synchronization signal. The scaler generates a frequency control signal in accordance with the frequency drift signal, generates an output clock signal in accordance with the frequency control signal, generates a scaled signal in accordance with the decoded signal, and outputs a display signal in accordance with the scaled signal and the output clock signal.
Claims25
A video system comprising:
- a first decoder including
- a first tracking unit, tracking a first video signal to generate a first synchronization signal and a first frequency offset signal, and
- a first decoding unit, decoding the first video signal and outputting a first decoded signal in accordance with the first synchronization signal;
- and
- a scaler including
- a frequency control unit, receiving the first frequency offset signal and generating a frequency control signal,
- a clock generating unit, generating an output clock signal in accordance with the frequency control signal,
- a scaling circuit, receiving the first decoded signal and generating a scaled signal, and
- an output unit, receiving the scaled signal and the output clock signal and outputting a display signal.
A scaler comprising:
- a frequency control unit, receiving a frequency offset signal and generating a frequency control signal;
- a clock generating unit coupled to the frequency control unit and generating an output clock signal in accordance with the frequency control signal;
- a scaling circuit, receiving a decoded signal and generating a scaled signal;
- and
- an output unit, coupled to the clock generating unit and the scaling circuit, receiving the scaled signal and the output clock signal and outputting a display signal.
A video system comprising:
- a first decoder including
- a first tracking unit, tracking a first video signal to generate a first synchronization signal, and
- a first decoding unit, decoding the first video signal and outputting a first decoded signal in accordance with the first synchronization signal;
- and
- a scaler including
- a frequency control unit, receiving the first synchronization signal and generating a frequency control signal,
- a clock generating unit, generating an output clock signal in accordance with the frequency control signal,
- a scaling circuit, receiving the first decoded signal and generating a scaled signal, and
- an output unit, receiving the scaled signal and the output clock signal and outputting a display signal.
A scaler comprising:
- a frequency control unit, receiving a synchronization signal corresponding to a decoded signal and generating a frequency control signal;
- a clock generating unit, coupled to the frequency control unit and outputting an output clock signal in accordance with the frequency control signal;
- a scaling circuit, receiving the decoded signal and generating a scaled signal;
- and
- an output unit, coupled to the clock generating unit and the scaling circuit, receiving the scaled signal and the output clock signal and outputting a display signal.
Dependencies are inferred from the claim text.