Volume/balance control apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorJeung-in Lee
Life of this patent
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Abstract
A volume/balance control apparatus includes a plurality of resistance arrays which correspond to a plurality of channels, a volume operator and a balance operator which generate volume and balance signals according to user's operation, an operation signal synthesizing means for producing synthesized control signals pertinent to each channel by synthesizing the volume signal and balance signal, and a plurality of decoders for decoding the output from the operation signal synthesizing means and applying the result to a switching element included in each resistance array. The volume/balance control apparatus has only one resistance array per channel, thereby improving noise characteristics, and permits the independent operation of volume and balance controls, thereby enhancing user convenience.
Claims27
A volume/balance control apparatus for controlling volume and balance signals of a plurality of channels, comprising:
- a plurality of resistance arrays including at least an L-channel and an R-channel array, each of said arrays receiving the signals of one of said channels, and each having a plurality of resistors connected in series and a plurality of selectively activated switching elements connected in parallel across respective ones of said resistors;
- a balance operating means for producing a balance signal in accordance with a user's operation thereof;
- a volume operating means for producing a volume signal in accordance with a user's operation thereof;
- an operation signal synthesizing means for receiving said balance signal and said volume signal and for producing a plurality of synthesized control signals based on a predetermined relationship between said balance and volume signals, said synthesizing means including a first curve value generating means for producing an L-channel curve C.sub.L' and an R-channel curve C.sub.R' which satisfy the equations
- C.sub.R' =.alpha..multidot.B+V
- and
- C.sub.L' =-.alpha..multidot.B+V
- wherein B is a magnitude of the balance signal, V is a magnitude of the volume signal, and .alpha. is a predetermined coefficient;
- and
- a plurality of decoding means for decoding said plurality of synthesized control signals to derive respective decoded signals, and for applying the decoded signals to said switching elements included in each resistance array.
Dependencies are inferred from the claim text.