Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. An open circuit potential of the negative electrode measured in a full charge state is from 19 mV to 86 mV. A potential variation of the negative electrode is greater than or equal to 1 mV when the secondary battery is discharged from the full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. A potential variation of the positive electrode is greater than or equal to 2 mV when the secondary battery is discharged from a full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is a discharge capacity obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. An open circuit potential of the negative electrode measured in a full charge state is from 19 mV to 86 mV. A potential variation of the negative electrode is greater than or equal to 1 mV when the secondary battery is discharged from the full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a positive electrode active material layer including a lithium-cobalt composite oxide. The lithium-cobalt composite oxide has a layered rock-salt crystal structure. The negative electrode includes a negative electrode active material layer including graphite. When the secondary battery is charged and discharged with an upper limit of a closed circuit voltage being set to 4.42 V or higher, a unit capacity (mAh/g) satisfies a condition represented by 168 mAh/g?unit capacity (mAh/g)?(?0.28×area rate (%)+178) mAh/g.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-cobalt composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. A potential variation of the positive electrode is greater than or equal to 2 mV when the secondary battery is discharged from a full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is a discharge capacity obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 3.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 3.00 V for 24 hours.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution. The positive electrode includes a lithium-nickel composite oxide having a layered rock-salt crystal structure. The negative electrode includes graphite. An open circuit potential, versus a lithium reference electrode, of the negative electrode measured in a full charge state is from 19 mV to 86 mV. A potential variation of the negative electrode is greater than or equal to 1 mV when the secondary battery is discharged from the full charge state by a capacity corresponding to 1% of a maximum discharge capacity. The maximum discharge capacity is obtained when the secondary battery is discharged with a constant current from the full charge state until the closed circuit voltage reaches 2.00 V, following which the secondary battery is discharged with a constant voltage of the closed circuit voltage of 2.00 V for 24 hours.

Abstract: A projection apparatus includes a projection unit configured to display an image based on an input signal by a display element, to form an optical image from light provided from a light source passed or reflected by the display element, and to project the formed optical image on a projection target, a photographing unit configured to photograph a region including an image range which is projected by the projection unit, an image recognition unit configured to recognize a person from the image obtained by the photographing at the photographing unit, and a projection control unit configured to change and set an aspect of the image projected by the projection unit based on a result of the recognition at the image recognition unit.

Abstract: A projection apparatus includes a projection unit configured to display an image based on an input signal by a display element, to form an optical image from light provided from a light source passed or reflected by the display element, and to project the formed optical image on a projection target, a photographing unit configured to photograph a region including an image range which is projected by the projection unit, an image recognition unit configured to recognize a person from the image obtained by the photographing at the photographing unit, and a projection control unit configured to change and set an aspect of the image projected by the projection unit based on a result of the recognition at the image recognition unit.

Abstract: A disc player apparatus for moving a tray unit between the inside and the outside of an outer casing for loading a recording disc. The disc player apparatus includes a pickup device arranged on the tray unit for reading out the recorded information from a recording disc, a first driving unit for moving the tray unit between a position of being housed within the outer casing and a position of being protruded outwardly from the outer casing, a disc table supported on the tray unit for movement in a direction towards and away from the pickup device, and a second driving unit for moving the disc table on the tray unit in a direction towards and away from the pickup device. The disc table holds and rotates the recording disc. The second driving unit shifts the disc table to a position furthest from the outer casing in a range of possible movement of the disc table relative to the tray unit if the first driving unit moves the tray unit to the position of being protruded from the outer casing.

Abstract: An image creation device which combines a plurality of part images into a target image. An attribute setting unit sets data on a sex, age, etc., of the target image. A selection unit selects the respective part images which constitute the target image. When a controller synthesizes the selected part images, it disposes the respective part images at positions depending on the set attributes in an image storage. When the controller synthesizes the selected part images, it disposes the respective selected part images at positions depending on the set positional relationship in the image storage.