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1. 发明专利

JPS58198932A Am stereophonic receiver 失效
标题翻译： AM STEREOPHONIC RECEIVER
公开(公告)号：JPS58198932A
公开(公告)日：1983-11-19
申请号：JP8144282
申请日：1982-05-17
申请人： Hitachi Ltd
发明人： WATANABE KAZUO
IPC分类号： H04B1/10 , H04H1/00 , H04H40/36
CPC分类号： H04H20/88 , H04H40/36
摘要： PURPOSE:To vary a threshold value for detecting a break of a carrier in response to variation in the level of an input signal, by providing a muting detecting circuit which varies a threshold value for the transmission and inhibition of the signal of a gate circuit. CONSTITUTION:A gate circuit 16 is provided on the input side of a peak detector 11 to inhibit the transmission of such a carrier that the AM modulation rate of an intermediate-frequency amplified 1F2 exceeds about 80%. Consequently, a detection signal regarding a carrier having a > about 85% AM modulation rate as a break of the carrier appears at the output of the peak detector 11. Further, a burst noise is integrated by a low-pass filter 9, so recovery time is extended. Therefore, a carrier break detection signal generated by the peak detector 11 is passed through a delay circuit 12 which extends only the recovery time to put a muting circuit 13 in operation and only an OR signal is outputted temporarily from a matrix circuit 15 to perform automatic switching to monaural reproduction, eliminating the burst noise.
摘要翻译：目的：通过提供一种静噪检测电路来改变阈值，用于响应于输入信号的电平的变化来检测载波的中断，该静噪检测电路改变门限电路的信号的传输和禁止的阈值。构成：门电路16设置在峰值检测器11的输入侧，以禁止这种载波的传输，使得中频放大的1F2的AM调制率超过约80％。因此，在峰值检测器11的输出端出现关于具有作为载波中断的>约85％AM调制率的载波的检测信号。此外，突发噪声由低通滤波器9积分，因此恢复时间延长。因此，由峰值检测器11产生的载波中断检测信号通过延迟电路12，延迟电路12仅延长恢复时间，使静噪电路13工作，并且只有OR信号从矩阵电路15临时输出，以执行自动切换到单声道再现，消除突发噪声。

2. 发明专利

JPS58197931A Am stereo receiver 失效
标题翻译： AM STEREO RECEIVER
公开(公告)号：JPS58197931A
公开(公告)日：1983-11-17
申请号：JP7990382
申请日：1982-05-14
申请人： Hitachi Ltd
发明人： AKITAKE ISAO
IPC分类号： H04H1/00 , H04H40/36 , H04H5/00
CPC分类号： H04H20/88 , H04H40/36
摘要： PURPOSE:To demodulate automatically a required system by detecting a stereo discriminating signal and turning point respectively, and, by means of these two signals, by selecting the system of a broadcasting station now receiving and simultaneously turning off the power supply of other systems. CONSTITUTION:The stereo signal of a broadcasting station is inputted to demodulation circuits 5-9, which corresponds to 5 stereo systems, from an IF amplification circuit 2. If the demodulation circuit 5 is the circuit corresponding to a broadcasting station now receiving, a stereo discrimination and detection circuit 14 detects a stereo discriminating signal and outputs an output signal 1. The signal 1 is inverted by an inverter circuit 15, and a signal 0 is inputted to one of terminals of a NAND circuit 16. A level detection circuit 13 outputs a signal 1, which indicates that a required broadcasting frequency is synchronized, to input it to another input terminal of the circuit 16. As a result, the signal 1 is inputted to a power source switching circuit 17 from the circuit 16, and power source is kept supplying the power to the circuit 5 so that the circuit 5 continues to operate. On the other hand, NAND circuits 20-24 output signal 0 to cut off the demodulation circuits 6-9 from the power source 26.
摘要翻译：目的：通过分别检测立体声识别信号和转折点来自动解调所需系统，并通过选择现在接收并同时关闭其他系统的电源的广播电台的系统，通过这两个信号。构成：广播电台的立体声信号从IF放大电路2输入到对应于5立体声系统的解调电路5-9。如果解调电路5是对应于现在接收的广播电台的电路，立体声识别和检测电路14检测立体声识别信号并输出输出信号1.信号1由反相器电路15反相，并且信号0被输入到NAND电路16的一个端子。电平检测电路13输出指示所需广播频率同步的信号1，将其输入到电路16的另一输入端。结果，信号1从电路16输入到电源切换电路17，电源正在向电路5供电，从而电路5继续工作。另一方面，NAND电路20-24输出信号0以从电源26切断解调电路6-9。

3. 发明专利

JPS60213143A Am stereophonic type automatic deciding circuit 失效
标题翻译： AM STEREOPHONIC型自动判定电路
公开(公告)号：JPS60213143A
公开(公告)日：1985-10-25
申请号：JP6948484
申请日：1984-04-06
申请人： Clarion Co Ltd
发明人： OKAGAKI HIROYUKI
IPC分类号： H04H1/00 , H04H40/36 , H04H40/45 , H04H5/00
CPC分类号： H04H20/88 , H04H40/36 , H04H40/45
摘要： PURPOSE:To decide what stereophonic type includes a modulated input signal concerned easily by digitally counting a pilot signal selected out of the demodulated input signal and separating its pulse train into plural kinds to decide the modulated input signals. CONSTITUTION:A pilot signal S0 included in a demodulated input signal Si applied to a terminal 11 is converted into a digital signal S1 by a waveform shaping circuit 13 and applied to an AND circuit 14. The AND circuit 14 opens its gate for a fixed period to apply a pilot signal S1 to a binary counter circuit 15. The counter circuit 15 counts up the inputted pilot signal, holds the pilot signal for a specific period and then outputs it to deciding circuits A, B having different separation accuracy. The deciding circuit A or B separates the pulse train of the pilot signal held for the specific period of decide the pilot signal and outputs the decided result to terminals 01-05 through a latch circuit 20. If the pilot signal is not included in any stereophonic type, a signal is outputted from a monophonic terminal 0M to execute monophonic display.
摘要翻译：目的：通过对从解调输入信号中选出的导频信号进行数字计数，将其脉冲串分为多种，以便决定调制的输入信号，从而容易地决定立体声类型包括调制输入信号。构成：施加到端子11的解调输入信号Si中包括的导频信号S0由波形整形电路13转换成数字信号S1，并施加到AND电路14. AND电路14将其门打开固定周期将导频信号S1施加到二进制计数器电路15.计数器电路15对输入的导频信号进行计数，将导频信号保持一段时间，然后将其输出到具有不同分离精度的判定电路A，B。决定电路A或B分离用于决定导频信号的特定时段保持的导频信号的脉冲串，并通过锁存电路20将决定的结果输出到端子01-05。如果导频信号不包括在任何立体声从单声道端子0M输出信号以执行单声道显示。

4. 发明专利

JPS58188971A Sound multiplex reception system 失效
标题翻译： SOUND MULTIPLEX接收系统
公开(公告)号：JPS58188971A
公开(公告)日：1983-11-04
申请号：JP7027582
申请日：1982-04-28
申请人： Eiden Kk
发明人： SUZUKI TOSHIHIKO
IPC分类号： H04H1/00 , H04H40/36 , H04N5/60
CPC分类号： H04H40/36 , H04N5/607
摘要： PURPOSE:To uniform delay time characteristics as much as possible and to prevent deterioration in separation of an output audio signal, by arranging frequency converters in two-divided lines respectively and making decreases in frequency, and using band-pass filters with the same filter characteristics. CONSTITUTION:A signal from an input terminal 8 is branched to lines l2 and l3; the 1st frequency converter 16 is arranged at the front part of one line l2 and the 2nd frequency converter 17 is also arranged at the front part of the other line l3. The difference between the frequency f1 of the 1st sound carrier from the converter 16 and the oscillation frequency fL1 of the 1st local oscillator OSC1 is equalized to the difference between the frequency f2 of the 2nd sound carrier and the oscillation frequency fL2 of the 2nd local oscillator OSC2. The outputs of those converters 16 and 17 are applied to the 1st and the 2nd audio frequency discriminators 16 and 17 through BPF1-BPF2 with the same characteristics and their outputs are inputted to a dematrix circuit 15 to uniform delay time characteristics, preventing the separation of the output signal from deteriorating.
摘要翻译：目的：为了尽可能均匀的延迟时间特性，并且通过分别在双分频线中布置变频器并使频率降低，并且使用具有相同滤波器特性的带通滤波器来防止输出音频信号的分离的劣化。构成：来自输入端子8的信号被分支到线路12和13; 第一变频器16布置在一行l2的前部，第二变频器17也布置在另一条线13的前部。来自转换器16的第一声音载波的频率f1与第一本地振荡器OSC1的振荡频率fL1之间的差与第二声音载波的频率f2和第二本地振荡器的振荡频率fL2之间的差值相等 OSC2。这些转换器16和17的输出通过具有相同特性的BPF1-BPF2被施加到第一和第二音频鉴别器16和17，并且它们的输出被输入到雷达矩阵电路15以使均匀的延迟时间特性，输出信号恶化。

5. 发明专利

JP3576795B2 It is adjacent interference elimination circuit 失效
公开(公告)号：JP3576795B2
公开(公告)日：2004-10-13
申请号：JP8058098
申请日：1998-03-13
申请人：株式会社ケンウッド
发明人：憲一白石 , 敦篠田
IPC分类号： H04B1/10 , H04H1/00 , H04H40/36
CPC分类号： H04H40/36 , H04B1/1018

6. 发明专利

JPS5947900B2 JPS5947900B2 - 失效
公开(公告)号：JPS5947900B2
公开(公告)日：1984-11-22
申请号：JP7809180
申请日：1980-06-10
申请人： Sony Corp
发明人： YOKOYA SATOSHI , NUMATA NORIO , SAITO JUJIRO
IPC分类号： H04H1/00 , H04H40/36 , H04S1/00
CPC分类号： H04H20/88 , H04H40/36

7. 发明专利

JPS58196740A Signal receiver 失效
标题翻译：信号接收器
公开(公告)号：JPS58196740A
公开(公告)日：1983-11-16
申请号：JP7934382
申请日：1982-05-11
申请人： Matsushita Electric Ind Co Ltd
发明人： INOUE TOMOHIRO , TANABE KENZOU
IPC分类号： H04H1/00 , H04H40/36 , H04H5/00
CPC分类号： H04H20/88 , H04H40/36
摘要： PURPOSE:To regenerate accurate stereophonic information, by providing a circuit which delays the phase of a reference signal led out of a PLL circuit. CONSTITUTION:An intermediate frequency signal e1F is detected by an envelope detector 6, which outputs a sum signal L+R. This signal e1F is supplied to a multiplier 11 and the PLL circuit 8 to output reference signals sin(omega1Ft) and cos(omega1Ft) synchronizing with the signal e1F. The signal sin(omega1Ft) is supplied to the multiplier 11 to detect the signal e1F synchronously, obtaining a signal (L-R)cosphi. The signal obtained by supplying the signal e1F to a limiter 7 is cos(omega1Ft-theta+phi). A phase delay circuit 15 is provided to compensate its phase delay theta and thus the cos(omega1Ft) is delayed to obtain a signal cos(omega1Ft-theta). Consequently, an accurate distortion-free difference signal L-R is obtained.
摘要翻译：目的：通过提供延迟从PLL电路引出的参考信号的相位的电路来再生准确的立体声信息。构成：中频信号e1F由包络检测器6检测，其包含和信号L + R。该信号e1F被提供给乘法器11和PLL电路8以与信号e1F同步地输出参考信号sin（ω1Ft）和cos（ω1Ft）。信号sin（ω1Ft）被提供给乘法器11以同步地检测信号e1F，获得信号（L-R）cosφ。通过将信号e1F提供给限幅器7而获得的信号是cos（ω1Ft-θ+ phi）。提供相位延迟电路15以补偿其相位延迟θ，因此cos（ω1Ft）被延迟以获得信号cos（ω1Ft-θ）。因此，获得了精确的无失真差分信号L-R。

8. 发明专利

JP2012527001A Audio decoding method and speech decoder 有权
公开(公告)号：JP2012527001A
公开(公告)日：2012-11-01
申请号：JP2012510106
申请日：2010-05-14
申请人： ▲ホア▼▲ウェイ▼技術有限公司
发明人： ▲キ▼ ▲張▼ , 立斌 ▲張▼
IPC分类号： G10L19/00 , G10L19/008 , G10L19/24 , H04S1/00
CPC分类号： G10L19/24 , G10L19/008 , H04H20/88 , H04H20/95 , H04H40/36 , H04S1/002
摘要： Embodiments of the present invention disclose an audio decoding method, including: determining that bitstreams to be decoded are monophony coding layer and first stereo enhancement layer bitstreams; decoding the monophony coding layer to obtain a monophony decoded frequency-domain signal; reconstructing left and right channel frequency-domain signals in a first sub-band region by utilizing the monophony decoded frequency-domain signal after an energy adjustment; and reconstructing left and right channel frequency-domain signals in a second sub-band region by utilizing the monophony decoded frequency-domain signal without the energy adjustment.

9. 发明专利

JPS59140739A Control signal detecting circuit 失效
标题翻译：控制信号检测电路
公开(公告)号：JPS59140739A
公开(公告)日：1984-08-13
申请号：JP1417683
申请日：1983-01-31
申请人： Sony Corp
发明人： SHIMIZU YOSHIO , YOKOYA SATOSHI
IPC分类号： H04N5/60 , H04H1/00 , H04H40/36
CPC分类号： H04H20/49 , H04H40/36
摘要： PURPOSE: To detect pilot signals of plural stereophonic systems by a single oscillator by dividing the frequency of the output of an oscillator which generates a frequency relating to frequencies of control signals of respective information transmission systems, and detecting a desired control signal.
CONSTITUTION: When a VCMP, AM-PM, or C-QUAM system is employed as a stereophonic system, a sum signal appearing at the output side of a mixer 3 is supplied to a matrix circuit 17 through a contact (a) of a switch 15 and a difference signal a from mixer 12 is supplied to the matrix circuit 17 through a contact (a) of a switch 16 to obtain an L and an R channels at output terminals 18 and 19. When an ISB system is employed, on the other hand, the sum and difference signals obtained at the output sides of the mixers 3 and 12 are passed through phase shifting networks 13 and 14 and supplied to the matrix circuit 17 through contacts (b) of the switches 15 and 16 respectively to obtain the L and R channels at the output terminals 18 and 19.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过分频产生与各信息传输系统的控制信号的频率有关的频率的振荡器的输出频率，并通过单个振荡器来检测多个立体声系统的导频信号，并检测所需的控制信号。构成：当使用VCMP，AM-PM或C-QUAM系统作为立体声系统时，出现在混频器3的输出侧的和信号通过开关的触点（a）提供给矩阵电路17 15，并且来自混频器12的差分信号a通过开关16的触点（a）提供给矩阵电路17，以在输出端18和19处获得L和R通道。当采用ISB系统时，另一方面，在混频器3和12的输出侧获得的和差信号通过相移网络13和14，并通过开关15和16的触点（b）分别提供给矩阵电路17，以获得 L和R通道在输出端18和19。

10. 发明专利

JPS5941931A Display device of broadcasting mode 失效
标题翻译：广播模式的显示设备
公开(公告)号：JPS5941931A
公开(公告)日：1984-03-08
申请号：JP15296682
申请日：1982-09-01
申请人： Matsushita Electric Ind Co Ltd
发明人： KAWASHIMA KAZUMI , FUJITA MASAAKI , IMAI KIYOSHI , YAMADA TADASHI , UTSU YOSHITOMO
IPC分类号： H04N5/60 , H04B1/16 , H04N5/445
CPC分类号： H04H40/36
摘要： PURPOSE:To display a broadcasting mode with a simple constitution without requiring the excess space, by changing the display color of a segment display element for channel display in accordance with the broadcasting mode. CONSTITUTION:Respective segments of a bicolor 7-segment LED display device 1 are constituted with red LEDs 1-1-1-7 and green LEDs 1-8-1-14 different in emission color, and their anodes are connected to one another and are connected to terminals A1 and A2. Cathodes of LEDs 1-1-1-7 and 1-8-1-14 are connected to one another and are connected to a decoder driver 21 through terminals 1-17-1-23. A TV receiver 2 is provided for the display device 1, and the output of a channel selecting circuit of the receiver 2 is supplied to the driver 21. An output (h) of a stereo broadcasting discriminating circuit of the receiver 2 and an output (i) of a dual broadcasting discriminating circuit are supplied to terminals A1 and A2 through transistors TRs 5-7, 11, and 13 and a gate 4. Display colors of LEDs 1-1-1-7 and 1-8-1-14 of the display device 1 are changed in accordance with the broadcasting mode.
摘要翻译：目的：通过根据广播模式改变用于频道显示的段显示元素的显示颜色，来显示具有简单结构的广播模式而不需要多余的空间。构成：双色7段LED显示装置1的各段由发光颜色不同的红色LED 1-1-1-7和绿色LED 1-8-1-14构成，它们的阳极彼此连接，连接到端子A1和A2。 LED 1-1-1-7和1-8-1-14的阴极彼此连接，并通过端子1-17-1-23连接到解码器驱动器21。为显示装置1提供电视接收机2，接收机2的频道选择电路的输出被提供给驱动器21.接收机2的立体声广播识别电路的输出（h）和输出 i）双向广播识别电路通过晶体管TR5-7,11和13以及门4提供给端子A1和A2。显示LED 1-1-1-7和1-8-1-14的颜色根据广播模式改变显示装置1。

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