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1. 发明授权

US10938493B2 Voice operated electronic device that blocks television commercials and substitutes alternate content therefor 有权
公开(公告)号：US10938493B2
公开(公告)日：2021-03-02
申请号：US16775440
申请日：2020-01-29
申请人： Luke Gregory Stavrowsky , Devon Stavrowsky
发明人： Luke Gregory Stavrowsky , Devon Stavrowsky
IPC分类号： H04H20/47 , H04H60/37 , G10L15/22 , H04H40/45 , H04H20/40
摘要： A system and method for blocking normal media content signals, such as television program signals emitted on a visual display of an electronic media device and substituting alternative content for blocked signals includes a control module operable to receive a blocking command via an input device electrically connected to the electronic media device. Receiving a blocking command results in the normal content being blocked and predetermined alternative content is played for either a user specified time or a predetermined time. Control over the television or other media device may be oral via speech recognition technology.

2. 发明授权

US10310801B2 Media entertainment system with fail-safe alarm modes 有权
公开(公告)号：US10310801B2
公开(公告)日：2019-06-04
申请号：US14944789
申请日：2015-11-18
申请人： Chestnut Hill Sound, Inc.
发明人： Steven Krampf , Evan B. Ross , Trung Quoc Phung
IPC分类号： H04B1/08 , H04H60/68 , H04H40/18 , H04R1/02 , H04B1/06 , G06F3/16 , H03J1/00 , H04B1/20 , G06F3/0482 , H04L29/08 , G06F3/0484 , G08B29/18 , H04H40/45 , H04H60/74
摘要： A media entertainment system including one or more user interfaces that are configured to receive user metadata selections and for receiving user settings for plural media source presets, playback volume settings, time settings, plural alarm settings, and plural alarm volume level settings. Each alarm and associated media source may have its own user selectable specific volume level setting that controls the appliance audio output volume when an alarm is triggered.

3. 发明授权

US5696830A Circuit arrangement for deriving a quality signal dependent on the quality of a received multiplex signal 失效
标题翻译：用于根据所接收的多路复用信号的质量导出质量信号的电路装置
公开(公告)号：US5696830A
公开(公告)日：1997-12-09
申请号：US522312
申请日：1995-08-25
申请人： Djahanyar Chahabadi , Matthias Herrmann , Lothar Vogt , Jurgen Kaesser
发明人： Djahanyar Chahabadi , Matthias Herrmann , Lothar Vogt , Jurgen Kaesser
IPC分类号： H03H17/04 , H03H17/02 , H04B1/10 , H04B1/16 , H04B1/26 , H04B1/30 , H04B1/64 , H04H1/00 , H04H20/12 , H04H40/45 , H04H5/00
CPC分类号： H04H20/12 , H04H40/45
摘要： The method for obtaining the quality signal includes multiplying a digital multiplex signal (MPX) by respective reference carrier signals mutually phase shifted by 90.degree. to each other, but otherwise equal, to form a pair of mixed signals (Imr1,Imr2); multiplying the mixed signals (Imr1, Imr2) by respective correction signals (G38c,G38s) to form a pair of corrected mixed signal (Ims1,Ims2); separately multiplying the digital multiplex signal (MPX) by each of two reference pilot signals mutually shifted in phase by 90.degree. relative to each other to form respective derived signals useful for obtaining said correction signals (G38c,G38s); adding said corrected mixed signals (Ims1,Ims2) to each other; multiplying said mixed signals (Imr1,Imr2) by the respective correction signals (G38s,G38c) to form a pair of product signals; subtracting these product signals from each other to form a subtraction result and low-pass filtering the subtraction result to obtain a low-pass-filtered resultant signal from which the quality signal is derived.
摘要翻译： PCT No.PCT / DE94 / 00320 Sec。 371日期1995年8月25日 102（e）日期1995年8月25日PCT 1994年3月22日PCT公布。出版物WO94 / 22228 日期1994年9月29日用于获得质量信号的方法包括将数字多路复用信号（MPX）乘以相互相移90°的相应参考载波信号，否则相等，以形成一对混合信号（Imr1， Imr2）; 将混合信号（Imr1，Imr2）乘以各个校正信号（G38c，G38s）以形成一对校正混合信号（Ims1，Ims2）; 将数字多路复用信号（MPX）分别乘以相互相移90°的两个参考导频信号中的每一个，以形成用于获得所述校正信号（G38c，G38s）的相应导出信号。将所述校正后的混合信号（Ims1，Ims2）相加; 将所述混合信号（Imr1，Imr2）乘以各个校正信号（G38s，G38c）以形成一对乘积信号; 相互减去这些乘积信号以形成减法结果，并对相减结果进行低通滤波，以获得从其导出质量信号的低通滤波结果信号。

4. 发明授权

US5107134A Matrix circuit of FM stereo multiplex demodulation circuit 失效
标题翻译： FM立体声多重解调电路的矩阵电路
公开(公告)号：US5107134A
公开(公告)日：1992-04-21
申请号：US495699
申请日：1990-03-19
申请人： Masashi Itoh
发明人： Masashi Itoh
IPC分类号： H04S1/00 , H04B1/16 , H04H1/00 , H04H40/45
CPC分类号： H04H40/45 , H04B1/1646
摘要： A matrix circuit includes a first resistor having one end connected to receive a current signal and another end connected to a first output node, a second resistor having one end connected to the one end of said first resistor, a first bipolar transistor having a first collector connected to the another end of said second resistor, a first emitter connected to a circuit ground and a first base connected to said first collector, and a second bipolar transistor having a second collector connected to a second output node, a second emitter connected to said circuit ground and a second base connected to said first base.
摘要翻译：矩阵电路包括：一端连接以接收电流信号的第一电阻器（RA）;和连接到第一输出节点（51）的另一端;第二电阻器（RB），其一端连接到所述第一电阻器的一端（RA），具有连接到所述第二电阻器（RB）的另一端的第一集电极的第一双极晶体管（Q3），连接到电路接地（GND）的第一发射极和连接到所述第一集电极的第一基极，以及具有连接到第二输出节点（52）的第二集电极的第二双极晶体管（Q4），连接到所述电路接地（GND）的第二发射极和连接到所述第一基极的第二基极。

5. 发明授权

US4933972A Stereo multiplex demodulator 失效
标题翻译：立体声多路解调器
公开(公告)号：US4933972A
公开(公告)日：1990-06-12
申请号：US371110
申请日：1989-06-26
申请人： Taiwa Okanobu
发明人： Taiwa Okanobu
IPC分类号： H04B1/16 , H03D1/22 , H03L5/00 , H04H1/00 , H04H40/45
CPC分类号： H03L5/00 , H03D1/2236
摘要： A composite stereo signal comprised of a modulated signal modulated by a sum signal which is the sum of left and right channel audio signals and a difference signal which is the difference between the left and right channel audio signals, and a pilot signal synchronized with the modulated signal, has the left and right channel audio signals demodulated therefrom by a stereo multiplex demodulator that includes a phase-locked loop (PLL) circuit for forming a sine wave signal synchronized with the pilot signal and having a frequency equal to a subcarrier frequency of the modulated signal, and a multiplying circuit for multiplying the composite stereo signal and the sine wave signal to generate the demodulated left and right channel audio signals.

6. 发明授权

US4680792A Demodulator comprising an indicator circuit for use in common to cancellation of a pilot signal and an indication of a reception state 失效
标题翻译：解调器包括用于消除导频信号和接收状态的指示的共同使用的指示器电路
公开(公告)号：US4680792A
公开(公告)日：1987-07-14
申请号：US708454
申请日：1985-03-05
申请人： Kouichi Tanaka , Takeshi Kuwajima , Kiyoshi Amazawa
发明人： Kouichi Tanaka , Takeshi Kuwajima , Kiyoshi Amazawa
IPC分类号： H03D1/22 , H04B1/16 , H04H1/00 , H04H40/45 , H04H40/81 , H04H5/00
CPC分类号： H04H40/45 , H03D1/2236 , H04B1/1653 , H04H40/81
摘要： In a demodulator comprising an indicator (31) for indicating either stereo reception or monaural reception, an indicator circuit (30) is used to cancel a pilot signal included in a stereophonic signal and to produce a drive signal for driving the indicator. The indicator circuit comprises a negative feedback loop formed by an adder circuit (41), a phase detector (43), and a cancellation circuit (45). The cancellation circuit supplies the indicator and the adder circuit with the drive signal and a cancelling signal synchronized with and approximate to the pilot signal, respectively. The adder circuit substracts the cancelling signal from the pilot signal to deliver an intermediate signal to a multiplex decoder and to the cancellation circuit through the phase detector. The cancellation circuit comprises a wave generator for generating a pair of currents proportional to an amplitude of the pilot signal and a level adjusting circuit for converting one of the currents into the cancelling signal. The other current is converted into the drive signal.
摘要翻译：在包括用于指示立体声接收或单声道接收的指示器（31）的解调器中，使用指示器电路（30）来取消包括在立体声信号中的导频信号并产生用于驱动该指示器的驱动信号。指示电路包括由加法器电路（41），相位检测器（43）和消除电路（45）形成的负反馈回路。消除电路分别向指示器和加法器电路提供与导频信号同步并接近导频信号的驱动信号和抵消信号。加法器电路从导频信号中消除抵消信号，通过相位检测器将中间信号传送到复用解码器和消除电路。消除电路包括用于产生与导频信号的幅度成比例的一对电流的波发生器和用于将电流中的一个转换为取消信号的电平调整电路。另一个电流被转换为驱动信号。

7. 发明授权

US4272788A Receiver for television sound multiplex broadcasting and FM stereo multiplex broadcasting 失效
标题翻译：接收机用于电视声音复用广播和FM立体声复用广播
公开(公告)号：US4272788A
公开(公告)日：1981-06-09
申请号：US84366
申请日：1979-10-12
申请人： Minoru Ogita
发明人： Minoru Ogita
IPC分类号： H03D1/22 , H04H1/00 , H04H40/36 , H04H40/45 , H04N5/445 , H04N5/60 , H04N5/46
CPC分类号： H04H20/88 , H03D1/2236 , H04N5/607
摘要： A receiver for selectively receiving either an FM-FM type television sound multiplex broadcasting or an FM-AM type FM stereo multiplex broadcasting includes a PLL (phase-locked loop) circuit for forming a 38 kHz switching carrier for demodulating an FM stereo multiplex signal during reception of the FM stereo multiplex broadcasting, which PLL circuit is concurrently used to attain various purposes in receiving the television sound multiplex broadcasting. In a first embodiment, the PLL circuit is used for FM-demodulating a subchannel signal during reception of the television sound multiplex broadcasting. In a second embodiment, the PLL circuit is used to detect a state that the television sound multiplex broadcasting wave is received during reception of the television sound broadcasting. In a third embodiment, the PLL circuit is used to detect whether the television sound multiplex broadcasting being received is a stereo broadcasting or a dual sound broadcasting.
摘要翻译：用于选择性地接收FM-FM型电视声音复用广播或FM-AM型FM立体声多路复用广播的接收机包括：PLL（锁相环）电路，用于形成用于解调FM立体声多路复用信号的38kHz切换载波接收FM立体声复用广播，该PLL电路同时用于在接收电视声音复用广播中实现各种目的。在第一实施例中，PLL电路用于在接收电视声音多路广播期间对子信道信号进行FM解调。在第二实施例中，PLL电路用于检测在接收电视声音广播期间接收到电视声音多路广播波的状态。在第三实施例中，PLL电路用于检测正在接收的电视声音多路广播是立体声广播还是双声道广播。

8. 发明授权

US4140878A Stereo demodulator system 失效
标题翻译：立体声解调器系统
公开(公告)号：US4140878A
公开(公告)日：1979-02-20
申请号：US832896
申请日：1977-09-13
申请人： Mitsuo Ohsawa
发明人： Mitsuo Ohsawa
IPC分类号： H03F3/343 , H03D1/22 , H03F3/34 , H03F3/45 , H04H1/00 , H04H40/45 , H04H5/00
CPC分类号： H03F3/45103 , H03D1/2227
摘要： A stereo demodulator system includes first and second differential amplifiers differentially responding to a first form of a stereo signal and at least a pair of differentially connected transistors serially connected to the output circuit of the first differential amplifier and responding to a second signal related to the first signal. A current mirror circuit is provided from the output circuit of the second differential amplifier to the pair of differentially connected transistors to produce a mixed output signal at the output terminal of the pair of transistors to separate the stereo signal into component signals. An offset current compensator is provided to avoid producing an offset current in the mixed output signal.
摘要翻译：立体声解调器系统包括对第一形式的立体声信号进行差分响应的第一和第二差分放大器以及串联连接到第一差分放大器的输出电路的至少一对差分连接的晶体管，并且响应与第一信号。从第二差分放大器的输出电路向一对差分连接的晶体管提供电流镜电路，以在该对晶体管的输出端产生混合输出信号，以将立体声信号分离成分量信号。提供偏移电流补偿器以避免在混合输出信号中产生偏移电流。

9. 发明授权

US4123714A FM Receiver with liquid crystal signal indicator 失效
标题翻译： FM接收器带有液晶信号指示器
公开(公告)号：US4123714A
公开(公告)日：1978-10-31
申请号：US671394
申请日：1976-03-29
申请人： Mitsuo Ohsawa
发明人： Mitsuo Ohsawa
IPC分类号： H03J1/04 , H04B1/16 , H04H1/00 , H04H40/45 , H04H5/00
CPC分类号： H04H40/45 , H03J1/04 , H04B1/1646
摘要： An FM receiver having a gate circuit extracting a pilot signal contained in a stereo composite signal and a circuit driving a liquid crystal display device with the output signal from the gate circuit, in which when there exists the pilot signal, "STEREO" is displayed on the liquid crystal display device, while when there exists no pilot signal "MONO" (monoral) is displayed on the same liquid crystal display device.
摘要翻译：具有提取立体声复合信号中包含的导频信号的门电路的FM接收器和利用来自门电路的输出信号驱动液晶显示装置的电路，其中当存在导频信号时，“STEREO”被显示在当不存在在同一液晶显示装置上显示导频信号“MONO”（monoral）时，液晶显示装置。

10. 发明授权

US4074075A Circuit for demodulating a stereo signal 失效
标题翻译：用于解调立体声信号的电路
公开(公告)号：US4074075A
公开(公告)日：1978-02-14
申请号：US736306
申请日：1976-10-28
申请人： Mitsuo Ohsawa
发明人： Mitsuo Ohsawa
IPC分类号： H03D1/22 , H04H1/00 , H04H40/45 , H04H5/00
CPC分类号： H03D1/229 , H03D1/2227
摘要： A circuit for demodulating a composite stereo signal of the type including a main-channel (L+R) signal and a sub-channel (L-R) signal to derive therefrom individual channel information signals L and R, respectively. A switching circuit of the balanced-modulator type is supplied with the composite stereo signal at one set of input terminals and with a switching signal whose frequency is equal to the sub-carrier onto which the sub-channel (L-R) signal is modulated, at another set of input terminals. The switching circuit produces oppositely-phased sub-channel signals which are applied to first and second current generators, respectively. An amplifier is supplied with the composite stereo signal to amplify the main-channel (L+R) signal, the amplifier including a channel separation control to adjustably vary the currents flowing through the amplifier so as to correspondingly vary the main-channel (L+R) currents. The main-channel currents produced by the amplifier and the oppositely-phased sub-channel currents produced by the current generators are supplied to respective output terminals whereat they are combined to produce the separate channel information signals L and R with minimum crosstalk.
摘要翻译：一种用于解调包括主信道（L + R）信号和子信道（L-R）信号的类型的复合立体声信号的电路，从而分别导出各个信道信息信号L和R. 平衡调制器类型的开关电路在一组输入端子处提供复合立体声信号，并且具有频率等于子信道（LR）信号被调制到的子载波的开关信号，在另一组输入端子。开关电路产生分别施加到第一和第二电流发生器的反相子通道信号。放大器被提供有复合立体声信号以放大主通道（L + R）信号，放大器包括通道分离控制器，以可调节地改变流过放大器的电流，从而相应地改变主通道（L + R）电流。由放大器产生的主通道电流和由电流发生器产生的相反的子通道电流被提供给相应的输出端子，在这些输出端子上它们被组合以产生具有最小串扰的单独的通道信息信号L和R.

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