baber/WOPTO huggingface dataset:
Patent JP-2012515670-A (JP)
Title: ストレージドラムアセンブリおよびストレージドラムアセンブリが装着された枚葉紙印刷機
IPC: B41F21/06
Filed: 2010-01-19
Abstract: 本発明はストレージドラムアセンブリに関する。本発明は枚葉紙印刷機の枚葉紙反転機構のためのストレージドラムアセンブリを提供することを課題とする。当該ストレージドラムアセンブリは、安定的かつ簡単な構造で、加工可能なあらゆる判型長さにおいて、ストレージドラムアセンブリのストレージドラム上で搬送される枚葉紙状被印刷材料が確実に固定されることを保証する。枚葉紙状被印刷材料の確実な固定は、以下の点によって解決される。すなわち、ストレージドラム３１の周面は、軸方向に交互に設けられた固定式の溝と枚葉紙載置面とを含んでおり、個々の溝と個々の枚葉紙載置面とは周方向において、胴溝の間、または当該胴溝とさらなる胴溝との間に延在しており、前記個々の枚葉紙載置面は、周方向に延在するように設けられた少なくとも一つの吸引溝を有しており、個々の吸引溝は吸引源と作用的に連結されている。
Patent JP-2012515986-A (JP)
Title: 電子データ入力システム
IPC: G06F3/041
Filed: 2010-01-21
Abstract: 視覚ディスプレイと、視線追跡装置と、プロセッサとを含む装置。視線追跡装置は、視覚ディスプレイへの目の向きを検知することができる。プロセッサは、視覚ディスプレイおよび視線追跡装置と通信している。プロセッサは、視覚ディスプレイ上にカーソルを表示させることができる。プロセッサは、表示されたカーソルのある部分への検知された目の向きに応じて、複数のカーソル・コマンドの中からカーソル・コマンドを実行することができる。視覚ディスプレイ、視線追跡装置、ならびに視覚ディスプレイおよび視線追跡装置と通信しているプロセッサを提供することを含む方法。また方法は、視覚ディスプレイ上にカーソルを表示させることを含む。さらに方法は、表示されたカーソルのある部分への目の向きを検知させることを含む。その上さらに方法は、検知された目の向きに応じて、複数のカーソル・コマンドの中からカーソル・コマンドを実行させることを含む。コンピュータ可読媒体。
Patent JP-2012517722-A (JP)
Title: 多元アクセスシステム
IPC: H04L47/20
Filed: 2009-02-09
Abstract: パケットデータネットワークゲートウェイPDN-GW(105)は、アップリンク及びダウンリンクの両方向で少なくとも第１及び第２のサービスフローのパケットデータを受信及び転送するように構成され、第１の種類の第１のアクセスネットワーク(125)が第１のサービスフローに用いられ、第２の種類の第２のアクセスネットワーク(130)が第２のサービスフローに用いられる。PDN-GW(105)は、ポリシ及び課金ルール機能(PCRF)(110)に、PDN-GW(105)がどの種類のアクセスネットワークを取り扱い可能かに関する情報を送信し、PCRFからの応答において、アクセスネットワーク(125,130)のうちサービスフローに用いるべきアクセスネットワークについてのルールを受信するように構成される。PDN-GW(105)はまた、サービスフローをダウンリンク方向において、あるアクセスネットワーク(125,130)と関連付けけるためにルールを用い、アップリンク方向においてアクセスネットワーク関連づけの検証を実行するようにさらに構成される。 【選択図】図１
Patent JP-2012517741-A (JP)
Title: 無線クライアント端末における電力節約を容易にするための分割プロキシサーバ
IPC: H04M1/00
Filed: 2010-02-06
Abstract: 分割プロキシサーバを使用することによってクライアント端末において電力を節約するために、電力節約方法およびシステムが提供される。低電力通信インターフェースと高電力通信インターフェースとを有するクライアント端末は、電力を節約するために、その高電力通信インターフェースの電源を切る。高電力通信インターフェースを遮断する前に、クライアント端末は、分割プロキシサーバを、そのプロキシとして動作することに割り当てる。分割プロキシサーバは、ＩＰネットワークを通して互いに通信するリモートページングプロキシとローカルページングプロキシとを含みうる。リモートページングプロキシは、アクセスポイントまたは通信ネットワークからページング要求を受信し、それをローカルページングプロキシに転送する。次に、ローカルページングプロキシは、低電力通信インターフェースを介してページングメッセージをクライアント端末に転送する。低電力通信インターフェースを介したページングメッセージの受信を受けて、クライアント端末は、高電力通信インターフェースの電源を入れ、ページングメッセージに直接応答することができる。 【選択図】図３
Patent JP-2012519523-A (JP)
Title: 側方チューブガイドを備えた喉頭鏡のための挿入部
IPC: A61B1/267
Filed: 2010-03-03
Abstract: 通常、ビデオ喉頭鏡である喉頭鏡のための喉頭鏡の挿入部は、一平面内に気管内チューブを保持するよう構成される側方チューブガイドを含む。カメラまたは他の画像収集装置のためのビューポートが、気管内チューブの面から側方にずらされる。気管内チューブの前記面は、患者の正中面と実質的に同じ面内に合わせられ、チューブは従来の喉頭鏡を使用して気管内チューブを導入するのに使用される動作に類似した自然な曲線動作を使用して喉頭内に前進させることができる。好適な実施形態において、挿管時に挿入部の遠位先端および保持された気管内チューブは患者の正中面に配置される。チューブガイドは気管内チューブを実質的に一平面内に保持するため、側方への湾曲が避けられ、チューブの前進に対する抵抗が減る。
Patent JP-2012520542-A (JP)
Title: 質量分析計のためのイオン化セル、および対応する漏れ検出器
IPC: G01N27/62
Filed: 2010-03-10
Abstract: 本発明は、第１および第２の電子入力溝（１１、２６）を備えるイオン化筐体（１０）であって、イオン化筐体（１０）の一側面（１６）がイオン化粒子（１４ａ、１４ｂ、１４ｃ）を通過させるための出力溝（１５）を有する、イオン化筐体（１０）と、前記第１の電子入力溝（１１）に対向して設置され、電子ビーム（１２）を生成するために供給されるように意図された、第１の作動フィラメント（１３）と、前記第２の電子入力溝（２６）に対向して設置され、第１の作動フィラメント（１３）が故障した場合に、電子ビームを生成するために供給されるように意図された、第２の予備フィラメント（２２）とを備え、前記入力溝（２６）が、前記第１の入力溝（１１）に対向して配置された前面領域（Ｆ）の外に設置される、質量分析計（２）のためのイオン化セルに関する。また、本発明は、そのような上で説明されたイオン化セルを備える、質量分析計を有する漏れ検出器に関する。
Patent JP-2013141838-A (JP)
Title: Device for supporting of low-fuel-consumption driving
Inventor: WAKITA KENTARO
IPC: B60K28/06
Filed: 2012-01-10
Abstract: PROBLEM TO BE SOLVED: To suppress an unneeded fuel consumption in acceleration and deceleration in a normal traveling of a vehicle, according to a feeling of a driver.SOLUTION: When a change in an accelerator opening degree due to an operation of an accelerator pedal 3 by the driver is over a predetermined value within a predetermined period of time, a pedal ECU1 calculates a suitable reactive force based on records in a reactive force applying level determination database 4, and the calculated reactive force is applied to the accelerator pedal 3 through an actuator 2. Thereby, the acceleration and deceleration of the vehicle can be matched to the feeling of the driver, which leads to a smooth pedal operation, and therefore, the unneeded fuel consumption can be suppressed.
Patent JP-2013142168-A (JP)
Title: Aluminum alloy excellent in creep resistance
Inventor: HAYASHI MINORU
IPC: C22F1/00
Filed: 2012-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a heat-resistant aluminum alloy which overcomes conventional technical problems and is excellent in creep resistance.SOLUTION: The aluminum alloy material for forging excellent in heat resistance is an aluminum alloy comprising 5.1-6.5% (mass%, this shall apply hereafter) Cu, 0.30-0.70% Mg, 0.10-1.0% Ag, 0.10-0.50% Mn, 0.07-0.11% Cr, and 0.06-0.30% Ti, with the balance comprising Al and unavoidable impurities, wherein the amount of Mn+Cr solid-dissolved is in the range of 0.05-0.50%, and the creep rapture life under conditions of 200°C and 160 MPa is 500 hr or longer.
Patent JP-2013142673-A (JP)
Title: Partial discharge measuring device, partial discharge measuring method, and partial discharge measurement program
Inventor: ASAKI TATSUYA
IPC: G01R31/12
Filed: 2012-01-12
Abstract: PROBLEM TO BE SOLVED: To provide a test power supply of a partial discharge measuring device, which achieves a low noise level and low power consumption.SOLUTION: According to the control of a personal computer 200, an AC voltage which rises or drops with the passage of time is outputted from a voltage control circuit 103, is amplified by an amplifier 104 which is a class-D amplifier, is boosted by a first transformer 106 at a boosting ratio that a maximum effective voltage becomes equal to a commercial power supply voltage, and is boosted, for example, to a measuring AC voltage of 5 kV by a second transformer 107.
Patent JP-2013150415-A (JP)
Title: Ups system
Inventor: HARATSU MASAYUKI
IPC: H02J9/06
Filed: 2012-01-18
Abstract: PROBLEM TO BE SOLVED: To provide a UPS system capable of exactly detecting failure in a bypass switch.SOLUTION: The UPS system turns off an input switch S1 when a power failure occurs (time t1) to stop a converter 6 and hence an inverter 11 converts DC power of a battery 8 into AC power. When a bypass switch 5 is not off even with a control signal CNT at "L" level and the converter 6 that has once stopped is operated (time t2), an output current I1 of the inverter 11 runs into the converter 6 through the bypass switch 5, so that the electric current I1 increases. When the electric current I1 increases, the bypass switch 5 is determined to be abnormal.
Patent JP-2013148803-A (JP)
Title: Display device
Inventor: YANAGISAWA AKIRA
IPC: G09F9/30
Filed: 2012-01-23
Abstract: PROBLEM TO BE SOLVED: To provide a display device capable of preventing disconnection failure of a picture signal line.SOLUTION: The display device comprises: a display region in which a scanning signal line and the picture signal line are formed; a terminal group for supplying signals to the scanning signal line and the picture signal line; and a lighting test circuit consisting of a plurality of first thin film transistors in which a drain electrode is connected to the picture signal line, a source electrode is connected to a test terminal and a gate electrode is commonly connected via a control signal line for test. The display device further comprises: a conductive thin film layer that is disposed by being separated at a predetermined distance from the control signal line for test; and a second thin film transistor that is formed in a region between the conductive thin film layer and the first thin film transistor and in which the gate electrode is connected to the control signal line for test. In the display device, a first spark generation voltage for a spark of static electricity to generate between the gate electrode and source/drain electrodes in the first thin film transistor is smaller than a second spark generation voltage for a spark of static electricity to generate between the control signal line for test and the conductive thin film layer.
Patent JP-2013152288-A (JP)
Title: Reflection screen and image display system
Inventor: KATSURA YUKI
IPC: G03B21/14
Filed: 2012-01-24
Abstract: PROBLEM TO BE SOLVED: To provide a reflection screen capable of suppressing the decrease of the contrast of an image displayed on a screen by making the external appearance of a screen surface suitable and to provide an image display system.SOLUTION: A reflection screen 10 includes a Fresnel lens layer 11 forming a Fresnel lens in such a manner that a plurality of unit lenses 111 having a lens surface 111a and a non-lens surface 111b are arranged on one surface of the Fresnel lens layer 11 and a reflection part 12 formed on the lens surface of the Fresnel lens layer, to reflect light. The unit lens has a convex shape. In the unit lens, the cross-sectional shape of a cross-section parallel to a direction Y parallel to the arrangement direction of the unit lenses and orthogonal to the screen surface is almost triangular and the lens surface and the non-lens surface face each other across the apex T of the almost triangular shape of the unit lens in the arrangement direction. The dimension H of the apex from a part V being the valley between the unit lenses is 15 μm or more.
Patent JP-2013151001-A (JP)
Title: Flux-cored wire for gas-shielded arc welding for weather-resistant steel
Inventor: SASAKI MASAHITO
IPC: B23K35/30
Filed: 2012-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a flux-cored wire for gas-shielded arc welding for weather-resistant steel which can provide welded metal excelling in welding work efficiency in all posture welding when welding the weather-resistant steel, and excelling in strength and toughness.SOLUTION: A flux-cored wire for gas-shielded arc welding for weather-resistant steel includes, in mass% to the total mass of the wire, 0.01-0.08% of C, 0.1-1.0% of Si, 1.0-3.0% of Mn, 0.2-0.8% of Cu, 0.3-0.8% of Cr, 0.05-0.8% of Mg, 3-8% of TiO-reduced value, 0.1-1.0% of SiO-reduced value, 0.05-1.2% of AlO-reduced value, 0.01-0.4% of the total of Na-reduced value and K-reduced value, and 0.005-0.2% of F-reduced value, wherein the apparent density and the average particle size of the Al oxide are 1.4-2.5 g/cmand 20-200 μm, respectively.
Patent JP-2013152864-A (JP)
Title: Lighting device and display device having the same
Inventor: KUROMIZU YASUMORI
IPC: F21S2/00
Filed: 2012-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a lighting device capable of suppressing deterioration of luminance in corner regions of an illuminated member.SOLUTION: The lighting device 20 is provided with a plurality of light-emitting elements 21 arranged on a rear-face side of a display panel 12. Luminous flux emitted from the light-emitting elements 21 becomes stronger as they come closer to the corner parts C of the lighting system 20.
Patent JP-2012081768-A (JP)
Title: Apparatus and method for transferring specified amount of plastic
Inventor: ZUFFA ZENO
IPC: B29C43/08
Filed: 2012-01-26
Abstract: PROBLEM TO BE SOLVED: To improve an apparatus and a method for transferring an object, particularly, a specified amount of a plastic.SOLUTION: The apparatus includes a transferring means (8) designed so as to convey the specified amount (80) of the plastic to a compression-molding apparatus (1), and the transferring means (8) includes: a receiving means (321) designed so as to remove the specified amount (80) from an extrusion means; and a conveying means (308) designed so as to receive the specified amount (80) from the receiving means (321) and to convey the specified amount (80) to the compression-molding apparatus (1). In the apparatus, the receiving means (321) is supported by the conveying means (308) and is movable to the conveying means (308).
Patent JP-2013158123-A (JP)
Title: Electric vehicle
Inventor: MAKINO TOMOAKI
IPC: B60K6/46
Filed: 2012-01-30
Abstract: PROBLEM TO BE SOLVED: To provide an electric vehicle which can automatically correct its output torque during vehicle travel, even if there is a difference in output characteristics between two traveling motors for independently driving left and right drive wheels.SOLUTION: This technology is applied to a vehicle which is equipped with two traveling motors 6 and 6 that independently drive left and drive wheels 2. There is provided a torque difference occurrence determining means 31 which determines a state that a difference arises in actual drive forces TL and TR of the left and righe drive wheels 2, though a torque command means 23 has given the same torque commands TL* and TR* to the two traveling motors 6 and 6. There is provided a drive force difference reducing means 32 which makes the vehicle to perform a control of reducing the difference in derive force, when determined by this means 31 that a difference in drive force equal to or exceeding a set value has occured between the left and right drive wheels 2.
Patent JP-2013154596-A (JP)
Title: Tire vulcanizing method
Inventor: IUCHI YASUKI
IPC: B29C33/02
Filed: 2012-01-31
Abstract: PROBLEM TO BE SOLVED: To provide a tire vulcanizing method capable of preventing a reduction in adhesion between rubbers, while reducing rolling resistance of a tire and preventing vulcanization time from being increased.SOLUTION: A tire vulcanizing method for heating and vulcanizing a green tire 9 in a mold 10 includes a heating process which includes: outside heating for heating the green tire 9 from the outer surface thereof by heating the mold 10, and inside heating for heating the green tire 9 from the inner surface thereof by supplying a high-temperature heating medium to a bladder 15 in the mold 10. In the outside heating, the temperature of the mold in contact with the tread surface of the green tire 9 is controlled to 130-160°C. In the inside heating, the temperature in the bladder 15 is maintained within a range of 185-205°C in the first half of the vulcanization cycle, and the temperature in the bladder 15 is made lower than the first half in the latter half of the vulcanization cycle.
Patent JP-2013161565-A (JP)
Title: Illumination lamp
Inventor: NISHIOKA TSUNETO
IPC: F21S2/00
Filed: 2012-02-02
Abstract: PROBLEM TO BE SOLVED: To ensure mounting of a heat sink on a straight-tube LED lamp with a simple structure.SOLUTION: The lamp includes a glass tube 56 (a cylindrical tube), and a heat sink 54 extended over a length direction of the glass tube 56 (the cylindrical tube), of which, the former 56 includes a protruded part 81 on an inner face of each end part rising in an inward direction of the glass tube 56. The heat sink 54, with a length L2 shorter than that L1 of the glass tube 56, is extended in a center part other than the end parts where the protruded parts 81 exist. The heat sink 54 is equipped with an arc-shaped part 63 arranged along an inner periphery face of the glass tube 56, with a thickness H2 of the arc-shaped part 63 larger than a height H3 of the protruded part 81.
Patent JP-2013161865-A (JP)
Title: Led device and manufacturing method of the same
Inventor: FURUSAWA NAOKO
IPC: H01L33/50
Filed: 2012-02-02
Abstract: PROBLEM TO BE SOLVED: To provide an LED device in which excitation efficiency of semiconductor nanoparticles is high and which has high intensity; and provide a manufacturing method of the LED device.SOLUTION: An LED device includes an LED chip and a wavelength conversion layer which covers the LED chip. The wavelength conversion layer is a layer obtained by impregnating an optical guide member for transmitting light emitted from the LED chip with semiconductor nanoparticles and a binder.
Patent JP-2013167723-A (JP)
Title: Keyboard device of electronic musical instrument
Inventor: OSUGA ICHIRO
IPC: G10B3/12
Filed: 2012-02-15
Abstract: PROBLEM TO BE SOLVED: To reduce costs and improve productivity of a keyboard device that simulates a key touch feeling of an acoustic piano by making a position of fulcrum of respective keys different in a front-back direction.SOLUTION: A plurality of white keys 11w and black keys 11b that oscillate by a press and release operation of keys are provided. Positions in a front-back direction of white key support parts and key support parts 13b that support the respective plurality of white keys 11w and black keys 11b are made different. A white key hammer and a hammer 16b that oscillate in conjunction with the oscillation of the plurality of white keys 11w and black keys 11b are provided. A center of oscillation of the hammer 16b is provided at the back of a center of oscillation of the white key hammer, and a distance from the center of oscillation of the hammer 16b to a contact part Pb1 with the black keys 11b is set longer than a distance from the center of oscillation of the white key hammer to a contact part Pw1 with the white keys 11w. An upper limit stopper 21 and a lower limit stopper 20 that regulate the oscillation of the white key hammer and the hammer 16b are provided to extend in the horizontal direction.
Patent JP-2013166227-A (JP)
Title: Sheet processing device and image forming device
Inventor: ITAGAKI ISAO
IPC: B26F1/08
Filed: 2012-02-16
Abstract: PROBLEM TO BE SOLVED: To improve the punching position accuracy of a sheet by reducing the amount of deviation from a determined position.SOLUTION: A sheet processing device includes: a sheet punching device 200 for punching a hole in a sheet by charging or discharging a punch 230 into or from a die hole 210c of a rotating die 210; and a conveying roller pair 311 for holding the sheet by a nip NP to convey the sheet to the sheet punching device. The charged and discharged position of the punch into or from the die hole of the sheet punching device and the nip of the conveying roller pair are located on a plane orthogonal to the conveying direction of the sheet. Thus, the conveying roller pair is located at the side the sheet punching device, the sheet punching device punches a hole in a part in which the conveying roller pair conveys the sheet without generating any loop on the sheet, and thus the sheet is punched by reducing the amount of deviation from a determined position.
Patent JP-2013165917-A (JP)
Title: Joint device, band, and electronic equipment with the band
Inventor: ASAMI KIYOSHI
IPC: A44C5/10
Filed: 2012-02-17
Abstract: PROBLEM TO BE SOLVED: To provide a joint device in which block members can be easily attached to and separated from each other without requiring a special tool or technique, and to provide a band whose length can be easily adjusted with the joint device, and electronic device with the band.SOLUTION: A slide member 45 including an insertion projection 435 stored in a projection storage part 404 of a connected block members 4 is moved in a sliding fashion in an expansion direction of a long hole 415 by sliding operation by an external operator S, and consequently a first engaging part 440 of the slide member 45 and a second engaging part 420 of a slide guide member 42 are resiliency engaged with each other at any one of a first engagement position and a second engagement position, so that each of adjacent block members can be attached to and separated from the others, wherein in the first engagement position, the insertion projection 435 is put into a projection state in which the insertion projection 435 projects from a hole part 403 and the block members 4 are joined to each other, and wherein in the second engagement position, the insertion projection 435 is put into a storage state in which the insertion projection 435 is housed in the long hole 403, and the block members 4 are not joined to each other.
Patent JP-2013172198-A (JP)
Title: Mobile apparatus for collecting distribution information of other mobile apparatus
Inventor: KUBO TAKESHI
IPC: H04W40/02
Filed: 2012-02-17
Abstract: PROBLEM TO BE SOLVED: To provide a mobile apparatus that collects rough distribution of other mobile apparatuses without a central server.SOLUTION: The mobile apparatus transfers a received start packet until reaching a maximum hop count. A mobile apparatus, on receiving the start packet, waits for a standby time obtained from a difference between the maximum hop count included in the received start packet and a present hop count, and thereafter, transmits a counting packet which includes information indicative of apparatus identification information included in a counting packet received from another mobile apparatus during the standby time and information indicative of the present hop count, and information indicative of apparatus identification information stored by storage means and information indicative of the present hop count included in the received start packet, to the mobile apparatus that has transmitted the received start packet through communication means.
Patent JP-2013172518-A (JP)
Title: Electric motor, compressor with the electric motor, refrigeration cycle device with the compressor, and method for manufacturing the electric motor
Inventor: TSUTSUMI TAKAHIRO
IPC: H02K15/12
Filed: 2012-02-20
Abstract: PROBLEM TO BE SOLVED: To obtain an electric motor of a compressor which can be miniaturized when it is used for a refrigeration cycle device for an R22 refrigerant, and can be used for a refrigeration cycle device for an R32 refrigerant while suppressing deterioration of production efficiency and increase of production facility costs of the compressor.SOLUTION: An electric motor 100 includes: a stator 12 formed by winding a coil 20 around a stator slot 12b; and a rotator 11 arranged at a predetermined interval with the stator 12 on the inner peripheral surface of the stator 12, in which the coil 20 is impregnated with varnish, and the coil 20 wound around the stator slot 12b of the stator 12 is impregnated with the varnish while vibrating the stator 12 in an impregnation process of the coil 20 with the varnish.
Patent JP-2013172397-A (JP)
Title: Resistance value compensation circuit
Inventor: MATSUZAKI TOMOKAZU
IPC: G05F1/56
Filed: 2012-02-22
Abstract: PROBLEM TO BE SOLVED: To provide a resistance value compensation circuit that suppresses a resistance value of a resistance whose resistance value varies with a substrate temperature.SOLUTION: A resistance value compensation circuit 1 includes: a resistance R whose resistance value varies with variation in substrate temperature; a resistance correction section 16 connected in series with the resistance R, and having a resistance value changed in preset resistance step widths to suppress the variation in the resistance value of the resistance R with variation in substrate temperature; a first voltage generation section 11 for generating a first voltage Vf varying with substrate temperature; a second voltage generation section 13 for generating second voltages Vf1 to Vfn-1 specifying the first voltage Vf for time points of changing the resistance value of the resistance correction section 16; and a resistance changeover section 14 for comparing the first voltage Vf with the second voltages Vf1 to Vfn-1 and changing the resistance value of the resistance correction section 16 accordingly.
Patent JP-2013172441-A (JP)
Title: Time difference correction method, audio signal processing apparatus, reproduction apparatus and program
Inventor: FUKUSHIMA NAOTAKA
IPC: H04S5/02
Filed: 2012-02-23
Abstract: PROBLEM TO BE SOLVED: To correct the time difference occurring between a signal of a main channel and a signal of an LFE channel, during production of a surround content, appropriately.SOLUTION: The time difference correction method for correcting the time difference between a main channel and an LFE channel, during production of a surround content, comprises: a time difference calculation step of calculating the time difference (amount of delay) of a signal in an LFE channel for a signal in a main channel, in a partial section of a surround content (S17); a correlation determination step of determining correlation of the signal in a main channel and the signal in an LFE channel (S18); and a time difference correction step of correcting the time difference calculated by the time difference calculation step (S22). The time difference correction step corrects the time difference only when a determination is made (S18: Yes)that there is correlation by the correlation determination step.