Hitachi Maxell, Limited

Sanyo Electric Co., Ltd.

Maxell Holdings, Ltd.

Keiichi Tanii

Masatoshi Hashimoto

Kyohei Takeuchi

Haruhiko Murata

Tohru Watanabe

Hirotsugu Murashima

Takahiro Shimada

Masao Takuma

Kiyotada Kawakami

Tooru Yamamoto

Tooru Asaeda

Masashi Honzawa

Mitsuo Seki

A charging control method and a charging mechanism for a lithium ion secondary battery are provided that can determine the life of the lithium ion secondary battery with more accuracy and a simple configuration. A charging control method for a lithium ion secondary battery calculates an integrated value of the number of charged times. The method includes: adding a predetermined value to the integrated value of the number of charged times of the lithium ion secondary battery if both a residual voltage that is a voltage value of the lithium ion secondary battery before the beginning of charging and an elapsed time from the time of the previous charging of the lithium ion secondary battery are not less than predetermined values; and estimating the life of the lithium ion secondary battery based on the integrated value of the number of charged times.

Lithium ion secondary battery charging control method and charging mechanism

The battery unit () includes a flat battery () having a cylindrical positive electrode can () with a bottom and a cylindrical negative electrode can () with a bottom that covers an opening side of the positive electrode can and having a side wall of the positive electrode can on the opening side fitted to an outer circumferential surface of a side wall of the negative electrode can and a substrate () provided on a flat surface of one of the negative electrode can and the positive electrode can and mounted with circuit components () thereon. The other of the negative electrode can and the positive electrode can that has a flat surface on an opposite side to the substrate in a thickness-wise direction of the flat battery serves as an external terminal for one of a positive electrode and a negative electrode.

Battery unit

The battery unit () includes a flat battery () having a positive electrode can () and a negative electrode can () and a circuit substrate () provided on one of an upper surface and a bottom surface of the flat battery (). Circuit components () are mounted at the circuit substrate (). A battery side negative electrode terminal () and a battery side positive electrode terminal () electrically connected to the flat battery () are provided on a surface of the flat battery () provided with the circuit substrate (). Substrate side terminals () electrically connected to the battery side negative electrode terminal () and the battery side positive electrode terminal () are formed at a side surface of the circuit substrate ().

A battery unit provided with a flat battery and a substrate having a circuit formed thereon is provided in a compact form as a whole. The battery unit () includes a flat battery () in a flat shape having an upper surface and a bottom surface and a substrate () fixed to one surface of the flat battery (). A circuit component () is mounted on a surface of the substrate () on a side of the flat battery (), and a positive electrode terminal () (charging terminal) electrically connected to a positive electrode side of the flat battery () and a negative electrode terminal () (GND terminal) electrically connected to a negative electrode side of the flat battery () are formed on a surface of the substrate () on the opposite side to the flat battery ().

Battery unit and electrical device

An output from a solid state image sensing device spatially modulated by a color filter is A/D converted and stored in a field memory. Digital signals read from the field memory during electronic zooming are successively delayed by 1H period by means of first, second and third 1H delay elements connected in series. The output from the field memory and outputs from the first, second and third 1H delay elements are separated into luminance components and line sequential color components by first to fourth Y/C separating circuits, respectively. A first set of three primary color signals are calculated based on outputs from the first, second and third Y/C separating circuits, and a second set of three primary color signals are calculated based on outputs from the second, third and fourth Y/C separating circuits. Three primary color signals corresponding to a new display point formed along with the execution of the electronic zooming function are formed based on the calculated two sets of three primary color signals, and a luminance signal corresponding to the new display point is formed based on outputs from the second and third Y/C separating circuits.

Integrated circuit for processing digital signals in video camera having

A circuit for performing white balance correction using two color temperature sensors includes an image sensor for converting an image of an object to a color image signal, a luminance signal/color signal separator for separating an output of the image sensor into a luminance signal and a color signal, and at least one level correction means for correcting a level of the color signal output from the luminance signal/color signal separator, based on a first white balance correction signal or a second white balance correction signal supplied through a switching or disabling means. A first white balance correction signal generator is provided independently of the image sensor and generates the first white balance correction signal correlating to a color temperature of the object. A second white balance correction signal generator generates the second white balance correction signal correlating to the color temperature of the object, based on the luminance signal output from the luminance signal/color signal separator and the color signal having the level corrected by the level correction means.

Growing community of inventors

Ibaraki, Japan

Keiichi Tanii