Abstract: Water leakage of a steam oven provided on an aircraft for heating ingredients is to be prevented. Two solenoid valves 6 and 7 are inserted in series in a water supply circuit of a steam oven. A power switch 12 supplies a 15 V direct current to the solenoid valves 6 and 7. A controller 1 transmits a command to driving circuits 4 and 5 of the solenoid valves according to a signal of a temperature sensor 10 in the oven. An output of a clock generator 14 is counted by a frequency counter and a time in which the valves are opened is counted. When count of a valve opening time becomes longer than a predetermined value, the power switch 12 of the solenoid valves is disconnected to prevent water leakage.

Abstract: A control system is provided that adopts a communication network using wireless visible light and IR light communications in a galley of an aircraft which is subjected to limitations of aviation regulations regarding wired communications. Insert equipments each having a visible light receiving element and an IR emitting element are disposed in a galley of an aircraft, and a galley controller is disposed within the galley or a circumference area thereof having a visible light emitting panel, an IR receiving element and a display/control panel for controlling the insert equipments. A mutual communication function between the galley controller and the insert equipments and a remote control function for controlling the insert equipments from the galley controller are realized via transmission and reception of visible light communication data and IR communication data.

Abstract: A current control circuit (active element) is provided that is connected between a rectifier of a DC power source and a smoothing capacitor in a power frequency converter and that controls a variation in the rectified current caused by a variation in the instantaneous power consumption of the load device. When the rectified current increases, the current control circuit limits the current to have a reference current value or lower and, when the rectified current decreases, the current control circuit increases the current to have a value close to the reference current to thereby suppress the rectified current from the rectifier to a substantially-constant value. This consequently mitigates the influence on the primary power source by the variation in the instantaneous power consumption of the load device, thus clearing the Load Demand Variation specification required for the power source to be used in an aircraft.

Abstract: Water leakage of a steam oven provided on an aircraft for heating ingredients is to be prevented. Two solenoid valves 6 and 7 are inserted in series in a water supply circuit of a steam oven. A power switch 12 supplies a 15 V direct current to the solenoid valves 6 and 7. A controller 1 transmits a command to driving circuits 4 and 5 of the solenoid valves according to a signal of a temperature sensor 10 in the oven. An output of a clock generator 14 is counted by a frequency counter and a time in which the valves are opened is counted. When count of a valve opening time becomes longer than a predetermined value, the power switch 12 of the solenoid valves is disconnected to prevent water leakage.

Abstract: The invention provides a visible light communication apparatus for in-flight entertainment system in an aircraft cabin in which a visible light communication (VLC) system is used for wireless communication of various contents data for in-flight entertainment. The invention provides a visible light communication apparatus for in-flight entertainment system in an aircraft cabin comprising an illuminating apparatus for illuminating the aircraft cabin via light emitted from an OLED element 20, and a visible light communication apparatus 19 for modulating a light quantity of light emitted from the OLED element 20 via electric signals to perform optical communication from an area distribution box 17 to a seat electronics box 18 by modulating the emission of the OLED element 20 so as to construct an in-flight entertainment system for offering information for service to passengers within the aircraft cabin.

Abstract: The invention provides an illuminating device suitable for illuminating a cabin of an aircraft. An OLED illuminating panel 100 is arranged on a ceiling of the cabin of an aircraft in a direction parallel to an axis line of the fuselage to illuminate the interior of the cabin. Further, the OLED illuminating panel is arranged on an upper portion of the window panels in a direction parallel to the axis line of the fuselage to illuminate the interior of the cabin. A control system for controlling the illumination within the cabin includes a central control unit and OLED illuminating panels 100 disposed above window panels and divided into multiple zones within the cabin, which is connected to the central control unit via power/signal lines, wherein the central control unit has a function to change and control the color of the OLED illuminating panels 100 of the respective zones.

Abstract: The invention provides a control system adopting a communication network using wireless visible light and IR light communications in a galley of an aircraft which is subjected to limitations of aviation regulations regarding wired communications. Insert equipments 6a through 6c each having a visible light receiving element and an IR emitting element are disposed in a galley 1 of an aircraft, and a galley controller 2 is disposed within the galley 1 or a circumference area thereof having a visible light emitting panel 4, an IR receiving element 5 and a display/control panel 3 for controlling the insert equipments 6a through 6c. A mutual communication function between the galley controller 2 and the insert equipments 6 and a remote control function for controlling the insert equipments 6a through 6c from the galley controller 2 are realized via transmission and reception of visible light communication data and IR communication data.

Abstract: A current control circuit (active element) is provided that is connected between a rectifier of a DC power source and a smoothing capacitor in a power frequency converter and that controls a variation in the rectified current caused by a variation in the instantaneous power consumption of the load device. When the rectified current increases, the current control circuit limits the current to have a reference current value or lower and, when the rectified current decreases, the current control circuit increases the current to have a value close to the reference current to thereby suppress the rectified current from the rectifier to a substantially-constant value. This consequently mitigates the influence on the primary power source by the variation in the instantaneous power consumption of the load device, thus clearing the Load Demand Variation specification required for the power source to be used in an aircraft.

Abstract: A galley body includes a storage unit 100 having a pair of guide rails 110 disposed on the bottom thereof for guiding a device to be mounted detachably to the galley. A connect panel 200 formed integrally to the galley body for connecting the device is disposed at the back of the storage unit 100. A connector 210 is disposed on the connect panel 200. A pair of guide holders 230, 240 is implanted in the connect panel 200 on both sides of the connector 210. The guide holders 230, 240 are formed for example of metal pipes having a light receiving member 232 or a light emitting member 242 composing the photocoupler disposed in the inside thereof, respectively. On the other hand, guide pins mounted on the device to be connected and corresponding to the guide holders 230, 240 have a light emitting member or a light receiving member composing the photocoupler disposed in the inside thereof, respectively.

Abstract: A galley body includes a storage unit 100 having a pair of guide rails 110 disposed on the bottom thereof for guiding a device to be mounted detachably to the galley. A connect panel 200 formed integrally to the galley body for connecting the device is disposed at the back of the storage unit 100. A connector 210 is disposed on the connect panel 200. A pair of guide holders 230, 240 is implanted in the connect panel 200 on both sides of the connector 210. The guide holders 230, 240 are formed for example of metal pipes having a light receiving member 232 or a light emitting member 242 composing the photocoupler disposed in the inside thereof, respectively. On the other hand, guide pins mounted on the device to be connected and corresponding to the guide holders 230, 240 have a light emitting member or a light receiving member composing the photocoupler disposed in the inside thereof, respectively.

Abstract: Synchronizing signals in a PAL system are generated without the need for an n f.sub.H oscillator by generating a reference signal having 568 cycles per line, adding a half cycle per line and then substracting one cycle per field. Pre-synchronizing signals are generated from the processed reference signal and the pre-synchronizing signals are then phase shifted by an amount which varies linearly with respect to elapsed time during each field from a value of zero to a value of substantially 1/(2 f.sub.sc).

Abstract: A time base corrector (TBC) for a special-motion video reproduction system employing a helical-scan VTR generates write-in address data synchronized to the reproduced digital data and stores the digital data in a digital memory in accordance with the generated write-in address. When the reproducing head jumps vertically, i.e. perpendicular to the data track, the currently-generated write-in address is latched. In response to a reference signal, the latched data is transferred to a read-out address counter for generating a read-out line address, and the stored video signal is then read out of the digital memory under control of the read-out address data.

Abstract: Disclosed is a digital time-base corrector (TBC) capable of correcting not only time-base fluctuation (jitter) but also a time-base change contained in a VTR-reproduced television video signal which experiences large changes in the horizontal scanning period during, for example, special-motion reproduction. The leading edge of a horizontal sync pulse is delayed by a variable delay means, and gate pulse is produced from the delayed leading edge and non-delayed trailing edge of the sync pulse. The delay time is controlled in response to the pulse width of the gate pulse. A burst gate pulse is produced from the trailing edge of the gate pulse. The burst gate pulse gates the video signal to extract a color burst, which is used to produce a clock pulse. The video signal is converted into a digital signal and stored in a digital memory in response to the clock pulse.

Abstract: An improved phase locking system in which an independently reproduced video signal is coded into a digitized video signal in response to a first clock pulse train, the first clock pulse train being produced from a synchronizing signal and/or a color burst signal contained in the video signal. The digitized video signal is stored and storage location as well as delay prior to storage is controlled in response to the phase difference between the synchronizing signal and a reference signal. The improved phase locking system reduces the frequency of occurence of visual shifts on the reproduced television picture.

Abstract: A digital time base corrector for correcting a time-base error in a television video signal, the video signal including a horizontal synchronizing signal and a color burst signal. The start of a write-in clock pulse oscillator is determined by a one-cycle portion of the color burst signal which has been extracted from the video signal in a prefixed phase relationship with the horizontal synchronizing signal. Oscillation frequency control at the write-in clock pulse oscillator is performed in response to the phase deviation of the write-in clock pulse from the extracted one-cycle burst signal portion. Phase-locking of the write-in clock pulse oscillator is performed in response to the phase difference, from the extracted one-cycle burst portion, of a selected one of first and second pulses, the first pulse occurring at the rate of the subcarrier signal and the second pulse occurring at the rate of the horizontal synchronizing pulse. Both pulses are obtained from the write-in clock pulse.