摘要:
A converter which converts first AC power input from an external power system to DC power, a storage device charged with the DC power from the converter, an inverter which converts DC power from the storage device to second AC power, an output AC power generating unit to which the first AC power and the second AC power are input, the unit which generates output AC power, and a controller which obtains external power information indicating a relationship between a power supply and a power demand in the external power system through a network and outputs a control signal to control the output AC power generating unit according to the external power information are provided. The controller controls the output AC power generating unit according to a state of a margin of the power supply.
摘要:
A converter which converts first AC power input from an external power system to DC power, a storage device charged with the DC power from the converter, an inverter which converts DC power from the storage device to second AC power, an output AC power generating unit to which the first AC power and the second AC power are input, the unit which generates output AC power, and a controller which obtains external power information indicating a relationship between a power supply and a power demand in the external power system through a network and outputs a control signal to control the output AC power generating unit according to the external power information are provided. The controller controls the output AC power generating unit according to a state of a margin of the power supply.
摘要:
Provided is a power management system including two or more sites. The two or more sites are connected by a distribution network including a power buying line on which power is bought, a power selling line on which power is sold, and a communication line on which information is communicated. Each site includes a power generating apparatus generating power using natural energy, and a power transmission/reception control unit transmitting power generated by the power generating apparatus to the distribution network and receiving power from the distribution network. The power transmission/reception control unit is operable, when power is sold by transmitting the power generated by the power generating apparatus to the distribution network, to transmit information necessary for selling power to the communication line of the distribution network.
摘要:
There is provided a communication apparatus includes a soft decision data detection section which detects soft decision data from a received digitally modulated signal; an indicator calculation section which calculates an indicator indicating a degree of variation in the soft decision data detected by the soft decision data detection section; and a packet length control section which controls a packet length in accordance with the indicator calculated by the indicator calculation section.
摘要:
An information retaining apparatus of the present invention has a storage unit which retains a plurality of information, an input unit which receives an input from a user, and a determination processing unit which extracts at least some of the plurality of information stored in the storage unit so as to display it according to the input from the input unit or the determination information transmitted from an information processing apparatus connected to the information retaining apparatus via a communication medium and process the information based on the expiration dates of the extracted information and attribute information of the information.
摘要:
There is provided a battery module including: a power storage unit storing power; a first authentication unit carrying out first authentication via a first authentication route; a second authentication unit carrying out second authentication via a second authentication route; and a discharging control unit controlling discharging from the power storage unit to an external appliance, wherein the first authentication unit is operable, when the first authentication has succeeded, to share key information to be used in the second authentication with an authentication party for the second authentication, the second authentication unit carries out the second authentication using the key information shared with the authentication party, and the discharging control unit is operable, when the second authentication has succeeded, to permit discharging from the power storage unit.
摘要:
Content data encrypted with a content key, the content key encrypted with an individual key specific to an information sending device, and the individual key encrypted with a distribution key that is updated in a predetermined cycle, and supplied are sent to an information receiving device, and the information receiving device decrypts the individual key with the distribution key, decrypts the content key with the individual key, and decrypts the content data with the content key. Thus, the information sending device does not have the distribution key, and accordingly piracy of content data can be prevented with a simple configuration. Also, the information receiving device sends the content key and a playback command to other apparatuses. Thus, other apparatuses can play back contents using the playback command and the content key. Furthermore, the information sending device decrypts the content key with the distribution key before being updated, and stores the same. Thus, contents purchased by an advance order can be actually purchased regardless of expiration dates of the distribution key. Furthermore, usage right is passed from a first information receiving device to a second information receiving device different in registration information at the tome of using contents. Thus, contents can be used among information receiving devices different from each other in registration information.
摘要:
An information processing apparatus, an information processing method, and an information providing medium are provided. Encrypted information, an encrypted first key for decrypting the encrypted information, and a second key for decrypting the first key are processed to store the information in a storage medium. To be more specific, cross certification is executed with the storage medium, the first key is decrypted by the second key, the decrypted first key is encrypted, and the decrypted first key and the encrypted information are stored in the storage medium. The novel constitution prevents unauthorized replication of information by use of a low-cost, general-purpose semiconductor memory.
摘要:
The present invention provides a display apparatus including a storage unit that stores information on electronic tickets; a reading unit that reads the information on electronic tickets stored in the storage unit; a determining unit that determines whether the electronic tickets are in use based on usage information of the electronic tickets included in the information on electronic tickets read by the reading unit; a display order determining unit that determines display order on a screen display of the electronic tickets based on results of the determination made by the determining unit; and a display screen generating unit that generates a display screen showing the electronic tickets according to the display order on the screen display determined by the display order determining unit.
摘要:
A content management method and content storage system are provided in which a content key encrypted with a first storage key and stored along with a content encrypted with the content key in a first content storing means is decrypted with the first storage key, the content key obtained by the above decryption is encrypted with a newly generated second storage key and stored along with the encrypted content in a second content storing means. Thus, the content management method enables to safely duplicate (back up) a content while preventing the content from being copied fraudulently.