Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

Tetsuro Shida

Hideaki Kosaka

Toshimitsu Sato

Sadayuki Inoue

Masahiro Tsujishita

Soichiro Matsumoto

Kenji Tsunashima

Tsuyoshi Kasaura

Takashi Fujiwara

Satoko Miki

Aki Kimura

Yuka Tsuda

Midori Sakaguchi

Hideki Kawano

Tatsuhiko Itohara

Masataka Baba

An air conditioning control system includes: an air pressure measurement unit () configured to measure an air pressure value; an air conditioning unit () whose wind direction and airflow volume are changeable; a wind velocity calculation unit () configured to calculate a wind velocity of wind received by a portable terminal () from a variation in a plurality of atmospheric pressure values and to specify a presence direction that is a direction in which the portable terminal () is present with respect to the air conditioner (); an air conditioning control determination unit () configured to determine a wind direction and an airflow volume of the air conditioning unit () in accordance with the wind velocity and the presence direction; and an air conditioning control unit () configured to control the air conditioning unit () so that the determined wind direction and airflow volume are obtained.

Air conditioning control system and air conditioner

For each of a first appliance group of a plurality of appliances (A,B,C) each having one or more function modules executed for providing a service, an execution plan for executing the one or more function modules from the present to the future is specified based on operation information. A single scenario is specified among a plurality of scenarios included in a service definition list, in such a way that the specified scenario does not hinder the execution plan. A second appliance group of a plurality of appliances (A,B,C) each having some of the function modules that are indicated in the specified single scenario and executed for providing the service. Based on the specified single scenario, the second appliance group is made to execute the function modules indicated in the specified single scenario.

Distributed coordination system, appliance behavior monitoring device, and appliance

A bandwidth reservation apparatus and bandwidth reservation method that enable a communication apparatus to quickly begin and stably carry out a data transmission, and a communication apparatus and communication system including the bandwidth reservation apparatus. The bandwidth reservation apparatus includes: a transmit data buffer unit; a bit rate reporting unit; a first reserved bandwidth quantity calculating unit that calculates a first reserved bandwidth quantity required for the transmission on the communication network; a second reserved bandwidth quantity calculating unit that calculates a second reserved bandwidth quantity that is additionally acquired so as to compensate for a shortage of transmission bandwidth that occurs during an interval from a time when the bit rate of the transmit data changes until the first reserved bandwidth quantity can be reserved; and a bandwidth reservation control unit that reserves a combined reserved bandwidth quantity obtained by combining the first and second reserved bandwidth quantities.

Bandwidth reservation apparatus, bandwidth reservation method, communication apparatus, and communication system

The transmission terminal in a wireless communication system includes: a communication unit for intermittently transmitting a radio signal; a transmission-side beacon reception unit; a beacon analysis unit for analyzing the received beacon signal; and a transmission output level change unit for estimating an emission time period of a beacon signal to be received by the transmission-side beacon reception unit on the basis of the beacon period information and the beacon reception time information, thereby obtaining an estimated emission time period; wherein the transmission output level change unit instructs the transmission-side communication unit to transmit the radio signal having a raised transmission output level during at least the estimated emission time period, the raised transmission output level being higher than a transmission output level during a time period other than at least the estimated emission time period.

Wireless communication system, transmission terminal, reception terminal, and transmission method

Even when a communication state between a tuner device and a display device is deteriorated, a television broadcast receiving device enables a user to view broadcast. The television broadcast receiving device of the present invention has a tuner section that receives a digital broadcast signal, selects the digital broadcast signal to decode the digital broadcast signal, generates video data including a video signal and an audio signal, and converts the video data into processed video data suitable for wireless communication, and a display section that receives the processed video data from the tuner section through wireless communication, and displays a video based on the processed video data. The tuner section has a recording/playback section that records and reads the video data in and from a predetermined recording section according to a change in state of the communication with the display section.

Television broadcast receiving device

A receiving device () is provided to allow appropriate clock regeneration even for a VBR TS when a stream including video and audio data, such as an MPEG2 TS, is transmitted or received in real time through a network having jitter. When the received packet data is stored in a memory () and the packet data is output in accordance with time information added to the received packet data, a clock frequency deviation between a sending device and a receiving device is calculated on the basis of the integration result of the amount of the received packets temporarily stored in the memory (), the number of the received packets which have been processed, and the measurement result of the integration time used for integrating the amount of the received packets. A read timing offset of the received packet is obtained on the basis of the calculation result of the clock frequency deviation.

Data receiving device and data receiving method

A management unit () which issues a digital certificate to a new transmission unit () includes a wireless communication section for performing communication in a network () and a wire communication section to which the new transmission unit () can be connected; when the new transmission unit () is wire-connected to the management unit (), it is judged in accordance with the received device type information of the new transmission unit (), whether or not the new transmission unit () is a device having a communication means that can communicate in the network (); and if the new transmission unit is judged as a device having that type of means, the management unit creates a digital certificate by using a device identifier specific to the new transmission unit (), and sends the digital certificate to the new transmission unit ().

Data sending/receiving device and digital certificate issuing method

An MPEG recording and playback device is provided which can provide pertinent information on a program being played back to viewers at least in certain forms with certainty, thereby facilitating viewers' convenience. In this MPEG recording and playback device, during recording of MPEG data, a program information collecting unit () collects pertinent information on program responsive to an input path of the MPEG data by changing a method of collection, and the pertinent information on program is recorded in a different location of a track from that for the MPEG data. During playback, recorded pertinent information on program is outputted after being superimposed on an MPEG decoded analog image signal.

MPEG recording and playback device

An MPEG data recorder comprises an interface means for receiving a data packet from a digital transmission line transmitting MPEG data in real time, and extracting a predetermined MPEG data from a received packet to output it as a data signal; a data rate detector means for determining a data rate of MPEG data based on a valid data period, during which the data signal is outputted from the interface means; and a recording mode selector means for selecting a recording mode based on the determined data rate. According to such a configuration, the data rate of MPEG data can be detected without a necessity of analyzing the MPEG data, which would require an MPEG system layer decoder, and thereby an MPEG data recorder can be obtained, in which MPEG data are recorded efficiently in a proper recording mode, with a simplified circuit configuration.

MPEG data recorder including an MPEG data rate detector

A copy-protected-state indicating MPEG-TS data output unit () holds a bit stream obtained by previously compressing and encoding image and/or audio data representing that recording desired by the user has ended in failure because the contents is copy-protected. When copy control information (V) outputted from an IEEE 1394 interface () indicates a copy-protected state, a selecting unit () selects copy-protected-state indicating MPEG-TS data (V) outputted from the copy-protected-state indicating MPEG-TS data output unit () and outputs it as to-be-recorded MPEG-TS data (V). Thereby, the data (V) is recorded.

MPEG data recorder having IEEE 1394 interface

A slow decode control part divides a reference clock generated by a VCXO at a ratio of a slow speed to a normal speed. An STC circuit counts the divided clock. A time for starting decoding by an MPEG video decode part is decided by comparing a DTS included in MPEG data with the count of the STC circuit. A display time determination part determines a timing for outputting decoded data by comparing a PTS included in the MPEG data with the count of the STC circuit. Decoded data temporarily held in a frame buffer is output in response to a signal generated in a determination part on the basis of frame frequency information included in the MPEG data. Thus, slow reproduction is implemented with a high degree of freedom not limited to an integer-fractional speed without requiring a complicated circuit structure.

Growing community of inventors

Tokyo, Japan

Tetsuro Shida