公开(公告)号：US4470070A

公开(公告)日：1984-09-04

申请号：US412898

申请日：1982-08-30

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H04N5/62 ,  H04N5/60

CPC classification number: H04N5/607

Abstract: A frequency translation phase-locked loop (PLL) is provided for detecting the audio information from a television signal. The PLL includes a mixer and a phase detector, responsive to the intermediate picture and sound carriers respectively, which carriers are amplified by a single IF amplifier. A first filter is coupled between the output of the television receiver tuner and the input of the IF amplifier and has a frequency response for passing the picture and sound carriers. The input of the mixer is coupled to the output of the IF amplifier and is substantially responsive to the amplified picture carrier. The phase detector has a first input also coupled to the output of the IF amplifier and is substantially responsive to the amplified sound carrier and a second input coupled to the output of the mixer. A second filter coupled to one of the first and second inputs of the phase detector has an amplitude versus frequency response which provides a predetermined attenuation at the frequency of the picture carrier and substantially less attenuation at the frequency of the sound carrier. A lowpass filter coupled to the output of the phase detector provides the detected audio information.

Abstract translation: 提供了频率转换锁相环（PLL），用于从电视信号中检测音频信息。 PLL包括混频器和相位检测器，分别响应于中间图像和声音载波，哪些载波由单个IF放大器放大。 第一滤波器耦合在电视接收机调谐器的输出端和IF放大器的输入端之间，并且具有用于通过图像和声音载波的频率响应。 混频器的输入耦合到IF放大器的输出，并且基本上响应于放大的图像载体。 相位检测器具有还耦合到IF放大器的输出的第一输入，并且基本上响应于放大的声音载体和耦合到混频器的输出的第二输入。 耦合到相位检测器的第一和第二输入之一的第二滤波器具有振幅对频率响应，其在图像载波的频率处提供预定的衰减，并且在声音载波的频率处实质上更少的衰减。 耦合到相位检测器的输出的低通滤波器提供检测到的音频信息。

公开(公告)号：US4479235A

公开(公告)日：1984-10-23

申请号：US352180

申请日：1982-02-25

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H04S1/00 ,  H04S5/00 ,  H04S7/00 ,  H04R5/00

CPC classification number: H04S5/00 ,  H04S1/00

Abstract: A system for synthesizing stereophonic signals from an audio information signal source is provided. The system includes a transfer function circuit for producing a modulated signal which varies in amplitude as a function of frequency in response to the audio signal, first and second amplifiers for providing amplified output signals, and a switch circuit for coupling selected ones of the audio signal and the modulated signal to the inputs of the first and second amplifiers. In a first position, the switch circuit causes the first and second amplifiers to operate in a matrix mode for matrixing the input signals to provide first and second synthesized stereophonic output signals, and in a second position, the switch circuit causes the amplifiers to operate in a non-matrix mode with respect to the input signals supplied thereto for providing an amplified audio output signal.

Abstract translation: 提供了一种用于从音频信息信号源合成立体声信号的系统。 该系统包括传递函数电路，用于响应于音频信号产生作为频率的函数的幅度变化的调制信号，用于提供放大的输出信号的第一和第二放大器以及用于耦合选定的音频信号的开关电路 并将调制信号输入到第一和第二放大器的输入端。 在第一位置，开关电路使得第一和第二放大器以矩阵模式操作，用于对输入信号进行矩阵化以提供第一和第二合成立体声输出信号，并且在第二位置，开关电路使得放大器在 相对于提供给它的输入信号的非矩阵模式来提供放大的音频输出信号。

公开(公告)号：US4254447A

公开(公告)日：1981-03-03

申请号：US28875

申请日：1979-04-10

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H01L23/36 ,  H01L23/367 ,  H01L23/40 ,  H05K1/02 ,  H05K7/20

CPC classification number: H05K1/0203 ,  H01L23/3672 ,  H01L23/4093 ,  H01L2924/0002 ,  H05K2201/066 ,  H05K2201/10659 ,  H05K2201/10689

Abstract: An integrated circuit heat dissipator is provided which will additionally hold the integrated circuit in a printed circuit board prior to soldering. The heat dissipator is comprised of a single elastic piece of metallic material having oppositely facing sides joined by a fold at the top. A tab is located at the bottom of each of the sides which is suitable for insertion into a printed circuit board. The tabs have a width which allows them to contact only the heat-conducting pins of the integrated circuit. The heat dissipator is mounted adjacent to the integrated circuit with one of the tabs contacting the heat-conducting pins. The elastic material gives the heat dissipator a spring-like property which causes the tabs to press outwardly from each other when inserted in a board so as to fixedly hold the heat dissipator and the integrated circuit in the printed circuit board prior to soldering.

Abstract translation: 提供集成电路散热器，其在焊接之前将集成电路另外保持在印刷电路板中。 散热器由单一的金属材料弹性件组成，具有在顶部由折叠面相对的相对侧。 每个侧面的底部都有一个凸片，适用于插入印刷电路板。 突片具有允许它们仅接触集成电路的导热引脚的宽度。 散热器靠近集成电路安装，其中一个接头与导热销接触。 弹性材料使得散热器具有类似弹簧的特性，当插入板中时突片彼此向外挤压，以便在焊接之前将散热器和集成电路固定在印刷电路板中。

公开(公告)号：US4404429A

公开(公告)日：1983-09-13

申请号：US261362

申请日：1981-05-07

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H03G3/02 ,  H03G3/04 ,  H03G3/10 ,  H04S7/00

CPC classification number: H03G3/04 ,  H04S7/00

Abstract: First and second sound channels are provided for processing audio signals. Each sound channel includes means responsive to a D.C. control voltage for controlling the volume of the audio output signal of the channel. A volume control potentiometer is coupled across two terminals of a source of supply voltage and a D.C. volume control potential is developed at a tap of the potentiometer. The volume control potential is applied to a control electrode of a controlled current path. The controlled current path includes the parallel combination of a first voltage divider and a second, variable voltage divider. A tap of the first voltage divider is coupled to the D.C. control input of the first sound channel, and a tap of the second voltage divider is coupled to the D.C. control input of the second sound channel. By adjusting the second, variable voltage divider, the control voltage provided by the second voltage divider may be set to equalize the D.C. volume control characteristics of the two sound channels.

Abstract translation: 提供第一和第二声道用于处理音频信号。 每个声道包括响应于直流控制电压的装置，用于控制通道的音频输出信号的音量。 音量控制电位器耦合在电源电压源的两个端子上，直流电容量控制电位在电位器的抽头处显影。 体积控制电位被施加到受控电流路径的控制电极。 受控电流路径包括第一分压器和第二可变分压器的并联组合。 第一分压器的抽头耦合到第一声道的直流控制输入，并且第二分压器的抽头耦合到第二声道的直流控制输入。 通过调节第二可变分压器，可以设置由第二分压器提供的控制电压以均衡两个声道的直流容积控制特性。

公开(公告)号：US4239939A

公开(公告)日：1980-12-16

申请号：US18905

申请日：1979-03-09

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H04S5/00

CPC classification number: H04S5/00

Abstract: A system is provided which synthesizes stereophonic sound by developing two separate sound channels from a single monophonic sound source. A synthetic stereophonic sound system constructed in accordance with the principles of this invention may be advantageously utilized in combination with a visual display such as a television receiver. A monaural signal is applied as the input signal for a transfer function circuit of the form H(s), which modulates the intensity of the monaural signal as a function of frequency. The intensity modulated H(s) signal is coupled to a reproducing loudspeaker, and comprises one channel of the synthetic stero system. The H(s) signal is also coupled to one input of a differential amplifier. The monaural signal is coupled to the other input of the differential amplifier to produce a difference signal which is the complement of the H(s) signal. The difference signal is coupled to a second reproducing loudspeaker, which comprises the second channel of the synthetic stereo system. In accordance with a preferred embodiment of the present invention, a stereo synthesizer is utilized as the sound reproducing system of a television receiver, with the reproducing loudspeakers located on either side of the kinescope. The amplitude -vs- frequency response curves of the two output channels have crossover points at which the amplitudes of the two response curves are equal, which effectively centers sounds at these frequencies between the loudspeakers. Two crossover frequencies are chosen to occur at approximately the frequency of peak intensity of the human voice, and at the center frequency of the second (articulation) formant frequencies of the human voice so as to effectively center voices on the kinescope while preserving the ambience effect of other, more randomly distributed sound signals. Centering the second formant frequencies also provides increased quality in the reproduction of speech sounds.

Abstract translation: 提供一种通过从单个单声道声源开发两个单独的声道来合成立体声的系统。 根据本发明的原理构造的合成立体声系统可以有利地与诸如电视接收机的视觉显示器组合使用。 应用单声道信号作为形式H（s）的传递函数电路的输入信号，其将单声道信号的强度作为频率的函数进行调制。 强度调制的H（s）信号耦合到再现扬声器，并且包括合成静音系统的一个通道。 H（s）信号也耦合到差分放大器的一个输入端。 单声道信号耦合到差分放大器的另一个输入，以产生作为H（s）信号的补码的差分信号。 差分信号耦合到包括合成立体声系统的第二声道的第二再现扬声器。 根据本发明的优选实施例，利用立体声合成器作为电视接收机的声音再现系统，再现扬声器位于显像管的两侧。 两个输出通道的振幅 - 频率响应曲线具有交点，两个响应曲线的振幅相等，这有助于扬声器之间的这些频率处的声音中心。 选择两个交叉频率发生在人声的峰值强度的频率附近，并且在人声的第二（关节）共振峰频率的中心频率处发生，以便有效地中心显像管上的声音，同时保持环境效应 的其他更随机分布的声音信号。 第二共振峰频率居中也提高了语音再现的质量。

公开(公告)号：US4511924A

公开(公告)日：1985-04-16

申请号：US437833

申请日：1982-10-29

Applicant: Patrick D. Griffis ,  Abraham E. Rindal

Inventor： Patrick D. Griffis ,  Abraham E. Rindal

IPC: H03D3/02 ,  H04N5/60 ,  H04N5/62

CPC classification number: H04N5/607

Abstract: A frequency translation phase-locked loop (PLL) is provided for detecting the audio information from a received television signal. The PLL includes a switching arrangement which, in a first position causes the loop to process the IF picture and sound carriers for detecting the audio information in an intercarrier type of detection method and, in a second position causes the loop to process the IF sound carrier for detecting the audio information without the use of the received picture carrier, in a "separate" (split-sound) type of audio detection method.

Abstract translation: 提供了频率转换锁相环（PLL），用于从接收到的电视信号中检测音频信息。 PLL包括开关装置，其在第一位置使得环路处理IF图像和声音载波，用于以载波间类型的检测方法检测音频信息，并且在第二位置使得环路处理IF声音载波 用于在不使用所接收的图像载体的情况下检测音频信息，以“分开”（分离声音）类型的音频检测方法。

公开(公告)号：US4405948A

公开(公告)日：1983-09-20

申请号：US342896

申请日：1982-01-26

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H04N5/60

CPC classification number: H03F1/305 ,  H04N5/60

Abstract: An arrangement for suppressing the audible effects of operating supply voltage transients developed when a sound reproducing system including a gain controlled audio amplifier is initially energized and de-energized. A control path supplies the amplifier with a gain (volume) control voltage of positive and negative senses corresponding to maximum and minimum sound volume. A first capacitor is coupled between the control path and a source of positive operating voltage from which the gain control voltage is derived. A normally non-conductive threshold conduction device and a second capacitor are coupled in series with the first capacitor between the control path and ground. The threshold device is biased to be rendered conductive for coupling positive-going supply voltage transients away from the control path via the second capacitor when the system is initially energized, thereby suppressing the audible effects of the positive transients. Negative-going supply transients developed on the control path when the system is de-energized are in a direction corresponding to minimum volume and are essentially inaudible.

Abstract translation: 一种用于抑制当包括增益受控音频放大器的声音再现系统最初被激励和断电时产生的工作电源电压瞬变的声音效应的装置。 控制通道为放大器提供对应于最大和最小音量的正和负感测的增益（音量）控制电压。 第一电容器耦合在控制路径和得到增益控制电压的正工作电压源之间。 正常非导通阈值导通装置和第二电容器与控制路径和地之间的第一电容器串联耦合。 当系统初始通电时，阈值器件被偏置为导通，以将正向电源电压瞬变通过第二电容器从控制路径耦合，从而抑制正瞬变的可听见的影响。 当系统断电时在控制路径上产生的负向供电瞬变在与最小体积相对应的方向上基本上是听不到的。

公开(公告)号：US4387413A

公开(公告)日：1983-06-07

申请号：US220127

申请日：1980-12-24

Applicant: Patrick D. Griffis

Inventor： Patrick D. Griffis

IPC: H01L23/31 ,  H01L23/36 ,  H01L23/40 ,  H05K1/02 ,  H05K3/30 ,  H05K7/20

CPC classification number: H05K1/0203 ,  H01L23/3121 ,  H01L23/36 ,  H01L23/4006 ,  H01L2023/405 ,  H01L2023/4062 ,  H01L2924/0002 ,  H05K2201/066 ,  H05K2201/10166 ,  H05K2201/10454 ,  H05K2201/10484 ,  H05K3/301

Abstract: A semiconductor package is provided in which the semiconductor element is bonded to a slab of metal and is encapsulated in a body of insulating epoxy. Lead terminals are connected to the semiconductor element within the body and extend out from one end of the body. The metal slab extends out from the body from the same end as the lead terminals and in a plane which is parallel to that of the terminals, thereby forming a heat sink tab for the device. The package may be rigidly mounted on a printed circuit board by inserting the lead terminals and the heat sink tab into respective holes in a printed circuit board and soldering the terminals and tab to copper foil on the board. The solder connection of the heat sink tab to the copper foil provides an excellent thermal contact between the tab and the foil, in addition to providing a rigid support for the device.

Abstract translation: 提供一种半导体封装，其中半导体元件被结合到金属板上，并被封装在绝缘环氧树脂体中。 引线端子连接到体内的半导体元件并从主体的一端延伸出来。 金属板从主体从与引线端子相同的端部延伸出并且在与端子的平面平行的平面中延伸，从而形成用于该装置的散热片。 通过将引线端子和散热片插入印刷电路板的相应孔中并将端子和突片焊接到电路板上的铜箔上，将封装刚性地安装在印刷电路板上。 除了为器件提供刚性支撑之外，散热片与铜箔的焊接连接提供了突片和箔之间的极好的热接触。