Abstract: A color signal adjustment circuit used in, for example, a camera device, in which specified color signals can be adjusted and, in addition, color signals can be adjusted with a smaller information volume. A chroma SIO 41 generates a pre-set control signal, under control by a micro-computer 50 subject to a setting operation on an operating unit, and judges, at the time of conversion of the color difference signal in the phase/gain control circuit 36, if the phase processing or gain processing is carried out, which of the (R-Y) signal and the (B-Y) signal is controlled and in which quadrant the color adjustment is made, in order to send X and Z signals meeting with these judgment conditions to a phase/gain adjustment circuit 36B pixel-by-pixel. The phase/gain adjustment circuit 36B generates (R-Y) and (B-Y) signals from (R-G) and (B-G) signals based on the X and Z signals.

Abstract: An integrated oscillation circuit used for frequency conversion circuit in which UHF frequency conversion and VHF frequency conversion are selectively energized to use a common IF amplifier. The integrated oscillation circuit is used for a local oscillation circuit. The integrated oscillation circuit including a connection terminal connected to an external resonance circuit and an input line of a mode switching signal which is set at a different level in response to an operation mode, an oscillation element, a bias terminal of which is connected to the connection terminal, a detection circuit detecting the level of the mode switching signal applied to the bias terminal of the oscillation element, and a switching circuit turning on and off a power source for driving the oscillation element in response to the level detected at the detection circuit.

Abstract: An integrated oscillation circuit used for frequency conversion circuit in which UHF frequency conversion and VHF frequency conversion are selectively energized to use a common IF amplifier. The integrated oscillation circuit is used for a local oscillation circuit. The integrated oscillation circuit including a connection terminal connected to an external resonance circuit and an input line of a mode switching signal which is set at a different level in response to an operation mode, an oscillation element, a bias terminal of which is connected to the connection terminal, a detection circuit detecting the level of the mode switching signal applied to the bias terminal of the oscillation element, and a switching circuit turning on and off a power source for driving the oscillation element in response to the level detected at the detection circuit.