Hue expander circuit preference control

Claim 2

An information processing systEm comprising an information signal source, a reference signal source, information recovery means for recovering the information by comparing a parameter of said information signal and at least one parameter of said reference signal, and an information altering circuit coupled to said information signal source and said reference signal source for detecting a signal representative of a relationship between said information signal and said reference signal and effectively altering the information content of said information signal within a predetermined range of said information signal parameter in accord with said signal before it is applied to said information recovery means, said information altering circuit including variable circuit means for manually adjusting said one parameter of said reference signal.

Claim 3

A color television system comprising a chrominance signal source, a reference signal source, and a hue altering circuit for detecting a parameter representative of a relationship between said chrominance signal and said reference signal and effectively altering the hue represented by said chrominance signal in accord with said parameter to enhance flesh tones, said hue altering circuit including a variable phase shift means having a viewer-operated variable circuit means for adjusting the phase of said reference signal before said parameter is detected.

Claim 4

A color television system comprising a chrominance signal source, a reference signal source, and a hue altering circuit for detecting a parameter representative of a relationship between said chrominance signal and said reference signal and effectively altering the hue represented by said chrominance signal in accord with said parameter to enhance flesh tones, said hue altering circuit including a variable phase shift means having a viewer-operated variable circuit means for adjusting the phase of said reference signal before said parameter is detected.

Claim 5

Color television apparatus comprising: chrominance channel means for supplying a chrominance signal-bearing information in the form of sideband components of a wave at a fixed frequency; reference signal means for supplying a reference signal at said fixed frequency and a nominally predetermined phase; hue-altering circuit means coupled to said chrominance channel means and said reference signal means for electrically detecting a phase relationship between said chrominance signal and said reference signal and altering the relative phase of said chrominance signal and said reference signal in accord with said detected relationship to enhance flesh tones; and manually operated variable circuit means for adjusting the phase of the reference signal applied to said hue altering circuit.

Claim 6

Color television apparatus comprising: chrominance channel means for supplying a chrominance signal-bearing information in the form of sideband components of a wave at a fixed frequency; reference signal means for supplying a reference signal at said fixed frequency and a nominally predetermined phase; hue-altering circuit means coupled to said chrominance channel means and said reference signal means for electrically detecting a phase relationship between said chrominance signal and said reference signal and altering the relative phase of said chrominance signal and said reference signal in accord with said detected relationship to enhance flesh tones; and manually operated variable circuit means for adjusting the phase of the reference signal applied to said hue altering circuit.

Claim 9

A color television receiver having a hue-altering apparatus for detecting when the phase of a received chrominance signal is within a predetermined phase range of a reference signal and modifying the phase of said chrominance signal when the phase of said received chrominance signal is within said predetermined range to enhance flesh tones and a reference signal generating means, said reference signal generating means including a manually variable element to adjust the phase of said reference signal.

Claim 10

A color television receiver having a hue-altering apparatus for detecting when the phase of a received chrominance signal is within a predetermined phase range of a reference signal and modifying the phase of said chrominance signal when the phase of said received chrominance signal is within said predetermined range to enhance flesh tones and a reference signal generating means, said reference signal generating means including a manually variable element to adjust the phase of said reference signal.

Claim 11

Hue-altering apparatus for a color television system comprising: chrominance channel means for supplying a chrominance signal; reference signal generator means for generating a reference signal at a predetermined phase; control means for manually varying said predetermined phase; detector means coupled to said chrominance channel means and said reference signal generator means for detecting when the phase of said chrominance signal is within a predetermiNed phase range; corrector means coupled to said detector means and said chrominance channel receiving means for generating a correction signal and combining said correction signal and said chrominance signal to form a corrected chrominance signal having altered hue characteristics; and demodulator means for demodulating said corrected signals.

Claim 12

Hue-altering apparatus for a color television system comprising: chrominance channel means for supplying a chrominance signal; reference signal generator means for generating a reference signal at a predetermined phase; control means for manually varying said predetermined phase; detector means coupled to said chrominance channel means and said reference signal generator means for detecting when the phase of said chrominance signal is within a predetermiNed phase range; corrector means coupled to said detector means and said chrominance channel receiving means for generating a correction signal and combining said correction signal and said chrominance signal to form a corrected chrominance signal having altered hue characteristics; and demodulator means for demodulating said corrected signals.

Claim 13

The apparatus of claim 6 wherein said predetermined phasic range is centered about a phase corresponding to a hue representative of flesh.

Claim 14

Hue-altering apparatus for a color television receiver comprising: reference signal generating means for generating a reference signal at a predetermined phase; first-phase shift means coupled to the output of said reference signal generating means for altering the phase of said reference signal; control means for conveniently varying the phase alteration of said first phase shift means; chrominance channel receiving means for supplying a received chrominance signal; first gate means coupled to said chrominance channel receiving means and first-phase shift means for determining when the signals applied to it are in a predetermined phasic relationship; second phase shift means coupled to the output of said first gate means for phase shifting the output signal from said first gate means; third-phase shift means coupled to said chrominance channel receiving means for phase shifting said received chrominance signal; second gate means coupled to said first phase shift means and said third phase shift means for determining when the signals applied to it are in a predetermined phasic relationship; fourth phase shift means coupled to the output of said second gate means for phase shifting the output signal from said second gate means; and summer means coupled to said second-phase shift means, said fourth-phase shift means, and said chrominance channel receiver for combining the signals applied to it.

Claim 15

Hue-altering apparatus for a color television receiver comprising: reference signal generating means for generating a reference signal at a predetermined phase; first-phase shift means coupled to the output of said reference signal generating means for altering the phase of said reference signal; control means for conveniently varying the phase alteration of said first phase shift means; chrominance channel receiving means for supplying a received chrominance signal; first gate means coupled to said chrominance channel receiving means and first-phase shift means for determining when the signals applied to it are in a predetermined phasic relationship; second phase shift means coupled to the output of said first gate means for phase shifting the output signal from said first gate means; third-phase shift means coupled to said chrominance channel receiving means for phase shifting said received chrominance signal; second gate means coupled to said first phase shift means and said third phase shift means for determining when the signals applied to it are in a predetermined phasic relationship; fourth phase shift means coupled to the output of said second gate means for phase shifting the output signal from said second gate means; and summer means coupled to said second-phase shift means, said fourth-phase shift means, and said chrominance channel receiver for combining the signals applied to it.

Claim 16

The apparatus of claim 8 wherein said control means comprises a variable impedance element included within said first phase shift means.

Claim 17

The apparatus of claim 9 wherein said variable impedance element is a variable resistance.