Sony Corporation

Tamon Ikeda

Kazuo Yamazaki

Tamiji Nagai

Takashi Tomita

Tsuyonobu Hatazawa

Kuniharu Suzuki

Shinichi Uesaka

Hajime Nishimura

Yoshihiro Konno

Tadahisa Yamamoto

Hiroaki Itoh

Kikuo Yamamoto

Masanori Hori

Ryuichi Nawa

Yuuichi Ishikawa

Makoto Kamoshida

Yosuke Otsu

The invention is associated with an information processing apparatus and method, a control program for the information apparatus, and a recording medium recording the control program. As directed by a host apparatus, control data are reproduced by controlling access means, outputting at least file control data to a host apparatus, and at least identification data are held in a predetermined memory; in response to a read directive based on the control data transmitted from the host apparatus, a control unit is sequentially detected in which the desired file associated with the read directive is sequentially recorded on the basis of the identification data held in the predetermined memory; and the access means is controlled on the basis of a result of the detection to sequentially reproduce and output data of files associated with the read directive to the host apparatus.

Information processing apparatus, information processing method, recording medium, control

When an output voltage of a secondary battery cell Eis obtained, only SWand SWare turned on. As a result, a capacitor Cis charged by a secondary battery cell E. With a delay of a time period &#xc4;T, SWand SWare turned off. SWand SWare turned on. As a result, electric charges of the capacitor Care moved to a capacitor C. Those operations are repeated until the potential of the capacitor Cbecomes almost equal to the output voltage of the secondary battery cell E. When the potential of the capacitor Cbecomes almost equal to the output voltage of the capacitor C, the potential of the capacitor Cis detected by the voltage detector. A first terminal of the capacitor Cis connected to a ground potential. As a result, the voltage of the secondary battery cell Ecan be stably detected. When the secondary battery cell Eis detected, only SWis turned on. As a result, the capacitor Cis charged by the secondary battery cell E. The potential of the capacitor Cis detected by the voltage detector. The voltage detectoris used in common with the secondary battery cells Eand E. As a result, fluctuations of detected results can be prevented. In addition, using that method, a circuit power can be supplied by the capacitor C

Apparatus for connecting secondary battery cells in series and method for controlling secondary battery cells connected in series

The present invention is relative to a battery capacity calculating method including a reference discharge curve calculating step of finding a discharge curve, operating as a reference, a corrected voltage calculating step of correcting a measured voltage Vof the battery with a component of an electrical resistance to find a corrected voltage V, and a capacity calculating step of finding the discharging capacity of the battery from the discharge curve, operating as a reference, using the corrected voltage V. The capacity calculating step includes a sub-step of calculating a capacity deterioration index S, as a ratio of capacity decrease caused by battery deterioration. The discharging capacity, calculated from the discharging capacity, operating as a reference, using the corrected voltage V, is further multiplied with the capacity deterioration index S to calculate the discharging capacity.

Battery capacity calculating method

A battery calculating method, apparatus, and program are provided. The battery capacity calculating method and apparatus can very accurately calculate a residual capacity of a secondary battery especially in the last stage of discharging independently of environmental conditions such as a temperature or a deteriorated state. the battery capacity calculating apparatus is equipped with a voltage measuring circuit which measures the terminal voltage (V) of a battery at the time of discharging, a current measuring circuit which measures the current value (I) of the battery at the time of discharging, and a control circuit which calculates a residual capacity and/or residual power. The operation unit in the control circuit calculates a discharged capacity (Q) and an apparent discharged capacity (Q) based on a terminal voltage (V) and a current value (I) measured by the voltage measuring circuit and the current measuring circuit, respectively, estimates a discharge curve (C) in the future including the last stage of discharging based on a capacity shift (&#x394;Q) being the difference between the discharged capacity (Q) and the apparent discharged capacity (Q) during discharging, and calculates the residual capacity and/or the residual power of the battery based on the estimated discharge curve (C).

Battery capacity calculating method, battery capacity calculating apparatus and battery capacity calculating program

A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the switching device and the other end is connected to the terminal. A negative feedback circuit is provided between the switching device and the terminal. A rectifying circuit comprising a diode and a capacitor is provided on a secondary coil. A node of the coil and the capacitor is connected to the terminal via a resistor. In detecting circuits, a voltage across the terminal is detected and a current across the resistor is detected. When the detected voltage and current are equal to predetermined values, a control signal is supplied to a feedback circuit.

Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a load

Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and or current to a load

A battery pack BP having terminals T , T , and T , a detecting circuit, a signal generating circuit, a temperature, voltage, and current detecting circuit, a switching circuit, and a secondary battery connected to the switching circuit. A first external signal generating unit may be connected to terminals T and T and a second external signal generating unit may be connected to terminals T and T . The detecting circuit detects whether the first or second external signal generating units has been connected. In so doing, the detecting circuit may detect an impedance of the first external signal generating unit and may detect a terminal voltage of the second external signal generating unit. The on/off operations of the switching circuit SW may be controlled in accordance with the detection result.

Battery pack and signal transmission system

To reduce errors and decrease loss, the detecting range of current is enlarged and the current is independently detectable. A rectified voltage and a rectified current are supplied from an input terminal. Resistors and are serially connected between the input and output terminals. A load is connected to the output terminal. Between an emitter and collector of the transistor are resistor and a constant current detecting circuit The transistor base is connected to a control circuit that controls the transistor switching operations. The constant current detecting circuit detects current from the voltage across resistor A current detecting circuit detects current from the voltage across resistor A signal is supplied to the control circuit when the constant current detecting circuit detects small current. The control circuit supplies a signal to the transistor base that increases transistor impedance.

Current detecting apparatus and its control method

An intermittent pulse generator is provided between terminals Ti and Ti . In the intermittent pulse generator , pulses are generated from an AC power source which is supplied and the generated pulses are supplied to a controller . The controller controls a switching circuit in accordance with the pulses from the intermittent pulse generator and a signal from a supplying mode detecting circuit . A rectifying circuit constructed by a diode bridge and a capacitor is provided for the secondary side of a transformer . An output of the rectifying circuit is supplied to an energy saving mode detecting circuit and a supplying mode detecting circuit . The energy saving mode detecting circuit is connected to an output terminal To through a switching circuit . When the energy saving mode is detected in the energy saving mode detecting circuit , a signal is supplied to the intermittent pulse generator

Power source apparatus for providing a power source in a standby mode and a pulse generating apparatus

A primary winding T and a switching circuit are serially inserted between input terminals Ti and Ti to which an alternating current is supplied. A diode , a resistor , and a capacitor are serially inserted in parallel with the primary winding T . A detecting circuit is connected to both ends of the capacitor and to an emitter and a collector of a phototransistor . A control circuit controls the switching circuit . A diode bridge and a capacitor are provided for a secondary winding T . Output terminals To and To are connected to both ends of the capacitor . A voltage detecting circuit is provided in parallel with the capacitor . The voltage detecting circuit detects voltages which are outputted from the output terminals To and To and supplies the detected voltages to a control circuit . The control circuit controls a light emitting diode

Power supplying apparatus and method having a primary side insulated from a secondary side

A rectified commercially available power source is supplied to one end of a primary coil T of a transformer T through a terminal TM . A capacitor C for rectifying is provided between the terminal TM and the ground. A switching device X is provided between the other end of the primary coil T and the ground. A power source obtained from a terminal TM is supplied as a power source for driving oscillators O and O , PWM circuits P and P , and a driving circuit D. The oscillator O supplies a signal based on a preset frequency f to the circuit P . In the circuit P , a switching signal having a predetermined duty ratio according to the supplied signal is supplied to the circuit D through a switching circuit SW . In the circuit D, the supplied switching signal is amplified and supplied to a control terminal of the switching device X.

Power supply apparatus

A rectifying circuit (a) comprising a diode Da and a capacitor Ca is provided for a winding Ta on the secondary side of a transformer T. A rectifying circuit (b) comprising Db and Cb is provided for a winding Tb. A charging device Ra connected to one output of the circuit (a) is connected to the &plus; side of a secondary battery E,The &plus; side of E,is connected to an output terminal To,and the &plus; side of E,through a switching circuit S,The &minus; side of E,is connected to the other output of the circuit (a) and connected to the &minus; side of E,through S,Rb connected to one output of the circuit (b) is connected to the &plus; side of E,The &plus; side of E,is connected to the &plus; side of E,through S,The &minus; side of E,is connected to the other output of the circuit (b) and connected to the &minus; side of E,through S,The &minus; side of E,is connected to an output terminal To,. S,is provided between the &plus; side of E,and the &minus; side of E

Method, apparatus and battery pack for charging and discharging secondary batteries

A connecting system includes a connecting apparatus for connecting selectively a power source of a power supply circuit to a battery or to an electronic apparatus. When a turn-over switch is switched to the electronic apparatus, the information signals is transmitted between the connecting means and the electronic apparatus.

Connecting system for supplying electrical power to a device in place of

A tape counter for counting an amount of tape by which a tape has run for a video signal recording and reproducing apparatus and method therefor, in which the number of frames on tape tracks over which each rotary head scans are counted according to a change in level of an envelope of a reproduced FM signal detected through each rotary head, the number of rotations of a rotary drum on which the rotary head is mounted is counted, and the amount of tape by which the tape has run is counted on the basis of the number of frames scanned by the rotary head and the number of rotations of the drum. The tape counter detects the amount of tape by which the tape has run in all running modes during a reproduction operation with a high accuracy and displays the amount of tape by which the tape has run in a series of units of hours, minutes, and seconds.

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Tokyo, Japan

Tamon Ikeda