Abstract: According to one embodiment, a current detection circuit includes a current detection part including an operational amplifier configured to compare a first voltage proportional to a load current with a second voltage proportional to a detection current. The current detection part is configured to output the detection current. The current detection circuit includes an adjustment part configured to generate data in accordance with a result of comparing a monitor voltage proportional to the detection current with a reference voltage, and to adjust an input offset of the operational amplifier.

Abstract: According to one embodiment, a current detection circuit includes a current detection part including an operational amplifier configured to compare a first voltage proportional to a load current with a second voltage proportional to a detection current. The current detection part is configured to output the detection current. The current detection circuit includes an adjustment part configured to generate data in accordance with a result of comparing a monitor voltage proportional to the detection current with a reference voltage, and to adjust an input offset of the operational amplifier.

Abstract: According to embodiments, a color signal processing circuit includes: an A/D converter configured to convert an analog television signal into a digital signal by using a clock; a color signal demodulation circuit configured to color-demodulate the television signal converted into the digital signal by the A/D converter; a clock generation section configured to generate the clock that is used by the A/D converter; and a frequency control section configured to control the clock frequency of the clock generation section on the basis of a color subcarrier frequency of a color signal included in the analog television signal and on the basis of the vertical synchronization signal frequency of the analog television signal.

Abstract: According to embodiments, a color signal processing circuit includes: an A/D converter configured to convert an analog television signal into a digital signal by using a clock; a color signal demodulation circuit configured to color-demodulate the television signal converted into the digital signal by the A/D converter; a clock generation section configured to generate the clock that is used by the A/D converter; and a frequency control section configured to control the clock frequency of the clock generation section on the basis of a color subcarrier frequency of a color signal included in the analog television signal and on the basis of the vertical synchronization signal frequency of the analog television signal.

Abstract: An oscillator includes a frequency-controllable clock generator, and a digital oscillator responsive to a clock generated by the clock generator for oscillating a data sequence at a period in proportion to the clock and also discretely controllable in accordance with a frequency switching signal.

Abstract: A magnetic recording medium having a magnetic thin film, wherein crystal grains constituting the magnetic thin film are separated by a crystal boundary region containing a non-ferromagnetic and non-metallic phase. The magnetic recording medium of the present invention provides a high coercivity and a remarkably reduced media noise property, and a high productivity in the mass production thereof.

Abstract: A magnetic recording medium having a magnetic thin film represented by the formula Co.sub.100-a-b-x-y-z Ni.sub.a Cr.sub.b Pt.sub.x M.sub.y Oz wherein a, b, x, y and z are atomic % satisfying 0.ltoreq.a.ltoreq.15, 0.ltoreq.b.ltoreq.15, 0<x.ltoreq.20, 0<y .ltoreq.20, 0<z.ltoreq.40, y+z.ltoreq.40, and a+b+x+y+z.ltoreq.60, and M is at least one element selected from the group consisting of Si, B, Zr, Al, Y, P, Ti, Sn and In.

Abstract: A multiple systems adaptive television receiver which is able to receive different system television signals such as the PAL system, the NTSC system, the SECAM system including a chrominance signal and a unique ID signal of the different television signals. The television receiver includes an ACC circuit for stabilizing the amplitude of the chrominance signal by the identification signal, the ACC circuit including a detector for detecting the ID signal, at least two ID discriminators each dedicated for discriminating the unique ID signal obtained by the ACC circuit, a control circuit for assigning priority of discriminating sensitivity to the each ID discriminator and a circuit for increasing the sensitivity of the each ID discriminator in response to an information for stabilizing the chrominance signal and an output from the active one of the ID discriminators.

Abstract: A sample and hold circuit for sampling an input signal having a variable input voltage. The circuit includes an input circuit for supplying the input signal, a holding capacitor for storing a charge voltage in response to a charge current supplied thereto when a charge voltage stored previously therein is lower than the input voltage and for producing a discharge current when the previous stored charge voltage is higher than the input voltage, a differential circuit for comparing the voltage levels of the input voltage and the charge voltage, and generating a differential current in response thereto, a current amplifier for generating the charge current in response to the differential current when the previous stored charge voltage is lower than the input voltage and for amplifying the discharge current when the previous stored charge voltage is higher than the input voltage and a switch for selectively activating and deactivating the current amplifier.

Abstract: A controlled current producing differential circuit apparatus for outputting a controlled stable current despite changes in a power supply voltage subject to unexpected fluctuation. The apparatus includes a control voltage supply source for supplying a control voltage in response to the power supply voltage, a reference voltage supply source responsive to the power supply voltage for supplying a predetermined reference voltage, and a differential circuit coupled to the control voltage supply source and the reference voltage supply source for outputting the controlled stable current in response to the difference between the control voltage and the reference voltage and for compensating for fluctuations in the power supply voltage.