Signal noise reduction system
AssigneeSamsung Electronics Co., Ltd.
InventorsDuckyoung Jung, Seungyup Koo
Life of this patent
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Abstract
A signal noise reduction system including a main signal path which conducts a first signal, and an auxiliary signal path which conducts a second signal, the system comprising; a high-pass filter in the auxiliary signal path receiving second signal at an input terminal, a voltage-to-current converter, connected to the high-pass filter, an amplifier, connected to the voltage-to current converter, and an adder for combining the signals on the two signal paths to produce an output signal at an output terminal.
Claims13
A signal noise reduction system including a main signal path and an auxiliary signal path, the system comprising:
- a high-pass filter in said auxiliary signal path receiving an input signal, and comprising;
- a first voltage-to-current converter receiving said input signal, and producing a first current signal,
- a variable current amplifier receiving and amplifying said first current signal, and
- a capacitor connected across said variable current amplifier and said first voltage-to-current converter, said capacitor defining a cutoff frequency for said high-pass filter;
- a second voltage-to-current converter, connected to said high-pass filter and converting a voltage output signal from said high-pass filter into a second current signal;
- an amplifier receiving and amplifying said second current signal;
- and
- adding means, having a first input receiving said second current signal from said amplifier, and having a second input receiving the input signal from said main signal path, for combining said said second current signal and said input signal to produce an output signal at an output terminal.
A signal noise reduction system, comprising:
- a main signal path receiving an input signal;
- an auxiliary signal path comprising;
- a high-pass filter comprising,
- a first voltage-to-current converter receiving said input signal and producing a first current signal corresponding to said input signal,
- a variable current amplifier connected in series with said first voltage-to-current converter, receiving and amplifying said first current signal, and
- a capacitor connected in parallel across said series connection of said variable current amplifier and said first voltage-to-current converter, said capacitor defining a cutoff frequency for said high-pass filter;
- a second voltage-to-current converter converting a voltage output signal from said high-pass filter into a second current signal;
- an amplifier receiving and amplifying said second current signal;
- and,
- an adder receiving said second current signal at a first input, receiving said input signal from said main signal path, and combining said second current signal and said input signal to produce an outputs signal at an output terminal.
Dependencies are inferred from the claim text.