子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Negative feedback preamplifier | JP16483196 | 1996-06-25 | JP3059104B2 | 2000-07-04 | 邦明 本島; 政利 片山; 正道 野上 |
| 62 | JPS4968249A - | JP9975473 | 1973-09-06 | JPS4968249A | 1974-07-02 | |
| 63 | 光電センサおよび光電センサにおける受光量の増幅制御方法 | JP2012147259 | 2012-06-29 | JP6085910B2 | 2017-03-01 | 都築 良介; 河合 武宏; 奥濃 基晴 |
| 64 | 信号処理装置および方法、プログラム、並びにデータ記録媒体 | JP2010201078 | 2010-09-08 | JP5903758B2 | 2016-04-13 | 辻 実; 知念 徹 |
| 65 | Amplifying device | JP2011006041 | 2011-01-14 | JP5603785B2 | 2014-10-08 | 直樹 本江 |
| 66 | Reception circuit used in power converter controller and power converter | JP2014008471 | 2014-01-21 | JP2014143910A | 2014-08-07 | ALEX B DJENGUERIAN; LIU SHENG; LEIF LUND |
| PROBLEM TO BE SOLVED: To provide a reception circuit used in a power converter controller, which includes a first amplifier coupled to receive an input pulse.SOLUTION: A second amplifier is coupled to a first output of the first amplifier. The first output responds to an input pulse and is coupled to a second output of the second amplifier. An output circuit responds to the second output and is coupled to generate an output signal. | ||||||
| 67 | Volume control device | JP2012081383 | 2012-03-30 | JP5389214B2 | 2014-01-15 | 健太郎 奥原 |
| 68 | Audio gain control using the auditory event detection based on the specific loudness | JP2009507694 | 2007-03-30 | JP5129806B2 | 2013-01-30 | クロケット、ブレット・グラハム; シーフェルト、アラン・ジェフリー |
| 69 | Amplification device | JP2011006041 | 2011-01-14 | JP2012147385A | 2012-08-02 | MOTOE NAOKI |
| PROBLEM TO BE SOLVED: To effectively control an amplitude-supply voltage characteristic of, for example, an ET amplifier.SOLUTION: In an amplification device for amplifying an input signal, amplification means 4 amplifies the input signal, amplification control means 5, 7 controls a supply voltage to the amplification means on the basis of the input signal, first detection means 14 detects an amplification factor between the input signal and a feedback signal that is feedback of the signal amplified by the amplification means, second detection means 14 detects a variance of the amplification factor per value or range of amplitude of the input signal, and amplification control updating means 14 updates the supply voltage to a higher level with respect to values or ranges of amplitude where the variance is larger than a predetermined threshold, and updates the supply voltage to a lower level with respect to values or ranges of amplitude where the variance is lower than the predetermined threshold. | ||||||
| 70 | Signal processing apparatus and method, program, and data recording media | JP2010201078 | 2010-09-08 | JP2012060379A | 2012-03-22 | TSUJI MINORU; CHINEN TORU |
| PROBLEM TO BE SOLVED: To enable the reproduction level of audio signals to be emphasized simply and efficiently without requiring preliminary analysis.SOLUTION: An analysis unit 21 generates a root mean square of a sample in a prescribed section of a supplied audio signal as mapping control information. A mapping unit 22, assuming a non-linear function determined by mapping control information to be a mapping function, converts amplitude of the supplied audio signal by using the mapping function. Thus, since amplitude of audio signals are converted using a non-linear function which changes depending on characteristics in each section of the audio signal, the reproduction level of audio signals can be emphasized simply and efficiently without requiring preliminary analysis. The present invention can be applied to a portable reproduction device. | ||||||
| 71 | Audio gain control using the auditory event detection based on the specific loudness | JP2009507694 | 2007-03-30 | JP2009535897A | 2009-10-01 | クロケット、ブレット・グラハム; シーフェルト、アラン・ジェフリー |
| 開示される一形態では、聴覚イベントおよび／または前記聴覚イベント境界に関連する信号特性の変化量に少なくとも部分的に応答して、動的ゲイン変更が音声信号に適用される。 別の形態では、音声信号の連続する時間ブロック間の特定ラウドネスの差異を比較することによって、音声信号が聴覚イベントに分割される。
【選択図】図３ |
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| 72 | Automatic gain control circuit | JP2001348018 | 2001-11-13 | JP3908508B2 | 2007-04-25 | 弘 宮城 |
| 73 | Semiconductor integrated circuit for communication and wireless communication apparatus | JP2002018888 | 2002-01-28 | JP2003218649A | 2003-07-31 | TOYODA KENJI; HORI KAZUAKI; HIKASA KAZUHIKO |
| PROBLEM TO BE SOLVED: To improve the linearity characteristic of the gain of a gain control amplifier in a semiconductor integrated circuit for communication provided with a high frequency power amplifier circuit including the gain control amplifier and a bias circuit for supplying a bias current to linearly change the gain of the gain control amplifier and to provide a wireless communication apparatus employing the same. SOLUTION: A bias generating circuit for supplying a bias current to a liner amplifier being a component of the high frequency power amplifier circuit for communications comprises a plurality of variable current sources whose currents and whose start levels differ from each other. The variable current sources are controlled with an input control voltage to compose the currents, the composite current is used for a bias current, and the composite current is exponentially changed with respect to the input control voltage. COPYRIGHT: (C)2003,JPO | ||||||
| 74 | Audio signal processor | JP32652898 | 1998-11-17 | JP2000152366A | 2000-05-30 | KAGEYAMA TORU; TAKAMI YUSUKE; SASAKI MASARU; INOHANA HARUYUKI; SAWAKI MANABU |
| PROBLEM TO BE SOLVED: To prevent clicks from being produced, even with the execution of switching and adjustment control by detecting a point of time when an amplitude of an audio signal is in crossing with a 0 level at a zero-crossing detector and selecting characteristics of a frequency characteristic control section and a loudness control section, when the audio signal is in crossing with the zero level detected by the zero-crossing detector when a switching command signal is received. SOLUTION: When a switching command signal is stored in a memory, a changeover controller 7 is in standby until the zero crossing detector 6 detects the time, when zero crossing takes place. The controller 7 gives a command to the control sections corresponding to the stored number of the control sections to control their outputs according to stored control variables. Each control section immediately conducts control according to the transferred control variable. The frequency characteristic control section 2 and the loudness control section 3 both consist of circuits to change the frequency characteristics, and a propagation delay sometimes takes place in the circuits above. Thus, the zero-crossing detector 6 is placed at a post-stage of a system of a processor. | ||||||
| 75 | Negative feedback-type preamplifier | JP16483196 | 1996-06-25 | JPH1013172A | 1998-01-16 | KATAYAMA MASATOSHI; NOGAMI MASAMICHI; MOTOJIMA KUNIAKI |
| PROBLEM TO BE SOLVED: To obtain a variable conversion gain function, without depending on the dispersion of semi-conductor producing process by connecting the serial connection body of a diode for change-over current and voltage conversion gain with resistance for deciding current and voltage conversion gain between the both ends of feedback resistance in parallel. SOLUTION: Between the both ends of feedback resistance 4, the serial connection body of the diode 8 for permitting the gate side of main FET 1 to be an anode and for change-over current and voltage conversion gain at the time of inputting a large signal current with resistance 10 for absorbing the dispersion of the semiconductor producing process of the on-resistance value of the diode 8 is connected in parallel. That is, resistance 10 is serially connected to the diode 8, and its serial connection body is connected between the both ends of feedback resistance 4 in parallel. Then, current and voltage conversion gain at the time of inputting the large signal current is decided by resistance 10, so that the various conversion gain functions which tend not to depend on the dispersion of semiconductor manufacturing process is obtained. | ||||||
| 76 | Changeable tuner/preamplifier | JP19542287 | 1987-08-06 | JPS6343410A | 1988-02-24 | ROORANTO ROISHIYURE |
| 77 | JPS5830326Y2 - | JP12848878 | 1978-09-19 | JPS5830326Y2 | 1983-07-04 | |
| 78 | USER INPUT WITH FINGERPRINT SENSOR | PCT/US2014054962 | 2014-09-10 | WO2015038626A3 | 2015-12-03 | ANG POON-KEONG; HASBUN ROBERT NASRY; JIANG DIANA DAN |
| Devices such as tablets, smartphones, media players, and so forth may incorporate a fingerprint sensor to support acquisition of biometric identification data. As described herein, input data from the fingerprint sensor may be used to control one or more functions of the device. The function controlled may be based at least in part on context of one or more applications executing on the device, direction of motion, and so forth. In one implementation, movement parallel to the fingerprint sensor may modify audio volume settings on the device. | ||||||
| 79 | RF POWER SENSOR WITH CHOPPING AMPLIFIER | PCT/US2007068277 | 2007-05-04 | WO2007131187A3 | 2008-03-06 | LANG DAVID; LOPEZ NOEL A |
| An RF power detector having a wide dynamic range may comprise a chopping amplifier and is configured to detect pulsed high frequency RP signals. The chopping amplifier controlled by a bias current regulator amplifies and chops an RF signal by periodically enabling and disabling the amplifier according to a system clock. The chopped high frequency RF signal feeds a Schottky diode biased to operate in the square law region for weak signals. The Schottky diode voltage is tapped and high pass filtered. The voltage drives a logarithmic and linear converter. The converter outputs are summed to produce an output voltage that is a repeatable and stable monotonically increasing function of the RF power. | ||||||
| 80 | 電力変換器コントローラにおける使用のための受信回路および電力変換器 | JP2014008471 | 2014-01-21 | JP6328941B2 | 2018-05-23 | アレックス・ビィ・ジェンゲリアン; シェン・リウ; レイフ・ルンド |
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