Abstract: An information storage device includes a storage that stores transfer data from an information processing device, the information storage device being removably connected to the information processing device, a switch unit that switches a data transfer mode of the information processing device in accordance with manipulation by a user, and a controller that controls the information processing device to transfer data in a mode in which data temporarily stored in a data storing area is transferred to the storage or in a mode in which data is transferred to the storage without being temporarily stored in the data storing area in accordance with the selection of the data transfer mode by the switch unit.

Abstract: Provided is an electronic circuit system which facilitates skew timing adjustment while preventing increase of power consumption. An electronic circuit system includes: a track hold circuit module formed by a hierarchical tree structure of track hold circuits which can track-hold an analog value of an analog signal; and a control signal generation module which supplies an operation control signal to each of the track hold circuits in the hierarchical tree structure. In the hierarchical tree structure, the number of track hold circuits of each of the hierarchies is stepwise changed from the first hierarchy of the input side to which an analog signal is inputted, toward the final hierarchy of the final output side as the number of hierarchies is increased.

Abstract: The nonlinearity effect of a rectifying element is enhanced, and further a resonant circuit is used to enlarge the input amplitude. Furthermore, the rectifying efficiency of a detection rectifier circuit is enhanced, thereby allowing the gain of an amplifier circuit in the following stage to be set to a low value. Signals having mutually opposite phases are inputted to RF input terminals (101,102). The signal at the terminal (102) is then inputted to the gate of a transistor (M1) via a capacitor (C3), while the signal at the terminal (101) is then inputted, via a capacitor (C1), to a node (N1) to which the source of the transistor (M1) and the gate and drain of a transistor (M2) are connected, whereby a capacitor (C2) is charged with a half-wave voltage-doubled rectified current. DC biases are inputted to terminals (301,302). There are formed series resonant circuits (L1,C15;L2,C16). A plurality of half-wave voltage-doubled rectifier circuits (M1,M2,C1-C3,R1) are connected in cascade.

Abstract: A signal processing device includes a detecting part that detects intensity of an input signal, a timer part that includes a time constant circuit and measures time based on a time constant of the time constant circuit, and a determination circuit that counts the number of times of switching of the input signal detected by the detecting part within the time measured by the time constant circuit.

Abstract: The present invention is aimed at realizing an amplifying circuit whose chip size is prevented from being significantly increased even if the number of compatible frequencies increases, and which has a wide dynamic range when it operates under a low voltage.

Abstract: A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal 103 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1 to M4 and capacitors C1 to C4) forming a rectifier circuit, and a voltage equal to the sum of the constant voltage applied to DC bias terminal 103 and a variation ?Vt of a threshold voltage of the MOS transistors is applied to DC bias terminal 104 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M5 to M8 and capacitors C5 to C8) forming a bias circuit.

Abstract: A signal processing device includes a detecting part that detects intensity of an input signal, a timer part that includes a time constant circuit and measures time based on a time constant of the time constant circuit, and a determination circuit that counts the number of times of switching of the input signal detected by the detecting part within the time measured by the time constant circuit.

Abstract: An information storage device includes a storage that stores transfer data from an information processing device, the information storage device being removably connected to the information processing device, a switch unit that switches a data transfer mode of the information processing device in accordance with manipulation by a user, and a controller that controls the information processing device to transfer data in a mode in which data temporarily stored in a data storing area is transferred to the storage or in a mode in which data is transferred to the storage without being temporarily stored in the data storing area in accordance with the selection of the data transfer mode by the switch unit.

Abstract: A variation of a threshold of diode-connected transistors is compensated for to maintain a constant rectification efficiency of a rectifier circuit, thereby enabling stable detection of a start signal. A constant voltage is applied to DC bias terminal of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M1 to M4 and capacitors C1 to C4) forming a rectifier circuit, and a voltage equal to the sum of the constant voltage applied to DC bias terminal 103 and a variation ?Vt of a threshold voltage of the MOS transistors is applied to DC bias terminal 104 of cascaded half-wave voltage doubler rectifier circuits (including MOS transistors M5 to M8 and capacitors C5 to C8) forming a bias circuit.

Abstract: The present invention provides an amplifying circuit capable of accomplishing high-impedance input/output, and providing a high gain and low power consumption. The amplifier amplifies a signal received through an input terminal, and outputs the signal through an output terminal. A control circuit comprised of the inductors, and the switches turns input/output impedances of the amplifier into a high impedance.

Abstract: The present invention provides an amplifying circuit capable of accomplishing high-impedance input/output, and providing a high gain and low power consumption. The amplifier amplifies a signal received through an input terminal, and outputs the signal through an output terminal. A control circuit comprised of the inductors, and the switches turns input/output impedances of the amplifier into a high impedance.