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1. 发明专利

ES159917Y 未知
公开(公告)号：ES159917Y
公开(公告)日：1971-05-16
申请号：ES159917
申请日：1970-06-30
申请人： ZENITH RADIO CORPORATION
IPC分类号： H04N20060101 , H04N

2. 发明公开

EP0036746A3 Method and apparatus for line isolation and interference shielding for a shielded conductor system 失效
标题翻译：用于屏蔽导体系统的线隔离和干扰屏蔽的方法和装置
公开(公告)号：EP0036746A3
公开(公告)日：1981-12-30
申请号：EP81301118
申请日：1981-03-17
申请人： ZENITH RADIO CORPORATION
发明人： Dobrovolny, Pierre
IPC分类号： H01B11/18
CPC分类号： H01P1/202 , H01B11/1895 , H01P1/225
摘要： method and structure is disclosed for isolating the shield of a shielded conductor system from a low frequency power source to which the shield may be connected. In a preferred embodiment, the isolation technique includes providing an interruption in the conductor's shield and situating within the interruption dielectric and magnetically absorptive material so as to create at least a pair of capacitances across the interruption, and such that the capacitances are separated by magnetically absorptive material. In this manner, low frequency isolation is achieved and the field within the cable is shielded from ambient high frequency electromagnetic interference which could otherwise leak through the interruption into a desired high frequency signal path within the conductor.
摘要翻译：公开了一种用于将屏蔽导体系统的屏蔽与屏蔽可连接到的低频电源隔离的方法和结构。在优选实施例中，隔离技术包括提供导体屏蔽中的中断并位于中断电介质和磁吸收材料内，以便在中断之间产生至少一对电容，并且使得电容被磁吸收分开材料。以这种方式，实现了低频隔离，并且电缆内的电场屏蔽了环境高频电磁干扰，否则可能会通过中断将泄漏到导体内的期望的高频信号路径。

3. 发明公开

EP0036746A2 Method and apparatus for line isolation and interference shielding for a shielded conductor system 失效
标题翻译：于线隔离和干扰屏蔽为一个屏蔽导体系统的方法和装置。
公开(公告)号：EP0036746A2
公开(公告)日：1981-09-30
申请号：EP81301118.6
申请日：1981-03-17
申请人： ZENITH RADIO CORPORATION
发明人： Dobrovolny, Pierre
IPC分类号： H01B11/18
CPC分类号： H01P1/202 , H01B11/1895 , H01P1/225
摘要： method and structure is disclosed for isolating the shield of a shielded conductor system from a low frequency power source to which the shield may be connected. In a preferred embodiment, the isolation technique includes providing an interruption in the conductor's shield and situating within the interruption dielectric and magnetically absorptive material so as to create at least a pair of capacitances across the interruption, and such that the capacitances are separated by magnetically absorptive material. In this manner, low frequency isolation is achieved and the field within the cable is shielded from ambient high frequency electromagnetic interference which could otherwise leak through the interruption into a desired high frequency signal path within the conductor.
摘要翻译：一种方法和结构，游离缺失盘从到其中屏蔽可连接的低频功率源隔离的屏蔽导体系统的屏蔽。在优选实施例中，隔离技术包括在中断电介质和磁吸收材料内的导体的屏蔽和情境婷中断提供，以便产生至少一对横跨中断电容的，并且这样做的电容由磁吸收分离材料。以这种方式，低频隔离实现与电缆内的场从环境高频电磁干扰可能通过中断否则泄漏到导体中的所希望的高频信号通道屏蔽。

4. 发明授权

US4600921A Full-field teletext system with dynamic addressability 失效
标题翻译：具有动态寻址能力的全场图文电视系统
公开(公告)号：US4600921A
公开(公告)日：1986-07-15
申请号：US543588
申请日：1983-10-19
申请人： William L. Thomas
发明人： William L. Thomas
IPC分类号： H04N7/03 , H04Q9/00 , H04N7/18
CPC分类号： H04N7/03
摘要： The present invention permits a teletext system operator to adjust subscriber access to service levels individually by adjusting a code at the head end station. A head-end station transmits a tier description page and a tier authorization page. The tier description page divides the data base into a group of tiers each comprising a defined range of pages. The authorization page lists authorization codes for all subscribers, one code per subscriber. Each subscriber station includes a permanent location code. When access is requested by the subscriber, the subscriber station uses the location code to acquire the authorization code transmitted by the head-end station. The authorization code indicates which tiers the subscriber station may decode. To change the service, the system operator may change the authorization codes at the head-end station or change the range definitions for the service level tiers.
摘要翻译：本发明允许图文电视系统操作者通过调整头端站处的代码来单独地调整用户对服务水平的访问。头端站传输层描述页和层授权页。层描述页面将数据库分成一组层级，每一层包括一定义范围的页面。授权页面列出所有订户的授权码，每个订户一个代码。每个用户站包括永久位置代码。当用户请求访问时，用户台使用位置代码来获取由头端站发送的授权码。授权码指示用户台可以解码的层。要更改服务，系统操作员可以更改前端站的授权码，或更改服务级别的范围定义。

5. 外观设计

USD275953S Television receiver cabinet 失效
公开(公告)号：USD275953S
公开(公告)日：1984-10-16
申请号：US353303
申请日：1982-03-01
申请人： Melvin H. Boldt, deceased , by Melvin W. Boldt, executor , David P. Chuboff , Arnold Goldman , Wayne J. Franek
设计人： Melvin H. Boldt, deceased , by Melvin W. Boldt, executor , David P. Chuboff , Arnold Goldman , Wayne J. Franek

6. 发明授权

US4461041A Integrated RF receiver/waveguide 失效
标题翻译：集成RF接收机/波导
公开(公告)号：US4461041A
公开(公告)日：1984-07-17
申请号：US455688
申请日：1983-01-05
申请人： Pierre Dobrovolny
发明人： Pierre Dobrovolny
IPC分类号： H04B1/26
CPC分类号： H04B1/26
摘要： The front end of a microwave receiver includes a waveguide with one wall comprised partially of the conductive ground plane of a printed circuit board. On the opposite side of the circuit board is mounted receiver front end circuitry including packaged, discrete devices and integrated circuits. An RF probe is inserted through the circuit board and into the waveguide for picking up a signal incident thereon and providing it to the aforementioned receiver front end circuitry. Incorporated in the waveguide is a cavity also partially formed from the ground plane of the receiver circuit board and containing a dielectric resonator element which, in combination with an oscillator located on the circuit board, provides a reference frequency for mixing with the received signal in generating an IF signal which is then provided to IF signal processing circuitry. The integrated RF receiver/waveguide is compact, incorporates readily available components in an inexpensively manufactured structure, and is particularly adapted for the front end of an SHF receiver such as utilized to receive satellite television signals.
摘要翻译：微波接收器的前端包括波导，其一个壁部分地由印刷电路板的导电接地平面组成。在电路板的另一面是安装接收机前端电路，包括封装，分立器件和集成电路。将RF探针插入电路板并插入波导中以拾取入射到其上的信号并将其提供给前述的接收器前端电路。结合在波导管中的是由接收器电路板的接地平面部分地形成并且包含介质谐振元件的腔，该介质谐振元件与位于电路板上的振荡器组合提供用于与产生的接收信号混合的参考频率然后将IF信号提供给IF信号处理电路。集成RF接收器/波导是紧凑的，以廉价制造的结构组合易于获得的部件，并且特别适用于诸如用于接收卫星电视信号的SHF接收器的前端。

7. 发明授权

US4459476A Co-ordinate detection system 失效
标题翻译：坐标检测系统
公开(公告)号：US4459476A
公开(公告)日：1984-07-10
申请号：US340604
申请日：1982-01-19
申请人： William W. Weissmueller , James Fitzgibbon
发明人： William W. Weissmueller , James Fitzgibbon
IPC分类号： G06F3/037 , G06F3/042 , G01V9/04 , G01J1/20 , G08C9/00
CPC分类号： G06F3/037 , G06F3/0421
摘要： The invention is directed to an X-Y co-ordinate detection system of the type which generates intersecting paths of radiation across a surface which may be, for example, a touch panel of the cathode ray tube type. Less expensive and more reliable operation is provided by developing the paths of radiation by use of radiation-emissive material disposed near at least one edge of the surface and excited by a flying spot of energy, such as an electron beam. In the preferred embodiment, strips of infrared emissive material are disposed on an internal surface of a cathode ray tube's panel and excited by overscanning the tube's electron beam to develop intersecting paths of infrared radiation across the tube's faceplate.
摘要翻译：本发明涉及一种X-Y坐标检测系统，该系统产生跨越可能是例如阴极射线管类型的触摸面的表面的辐射交叉路径。通过使用设置在表面的至少一个边缘附近并由诸如电子束的能量的飞跃点激发的辐射发射材料来显影辐射路径来提供更便宜和更可靠的操作。在优选实施例中，红外发射材料的条带设置在阴极射线管面板的内表面上，并通过过扫描管的电子束而激发穿过管的面板产生红外辐射的相交路径。

8. 发明授权

US4450386A Electronic television picture framing circuit 失效
标题翻译：电子电视图像框架电路
公开(公告)号：US4450386A
公开(公告)日：1984-05-22
申请号：US325783
申请日：1981-11-30
申请人： Stanley E. Lehnert
发明人： Stanley E. Lehnert
IPC分类号： H04N3/233 , H03K5/01
CPC分类号： H04N3/2335
摘要： An electronic image framing circuit is described for eliminating the visible effects of pincushion distortion at the edges of a television image. Toward this end, portions of video lines which extend beyond a selected straight line image boundary are blanked by a pulse processor. The pulse processor responds to conventional horizontal rate and vertical rate pulses for developing blanking pulses whose widths are varied at a vertical rate. The modified blanking pulses are applied to a conventional blanking circuit for blanking the portions of video lines which extend beyond the desired image area. A parabola generator is also described for use in developing the modified blanking pulses.
摘要翻译：描述了一种电子图像成帧电路，用于消除电视图像边缘处的枕形失真的可见影响。为此，延伸超过所选择的直线图像边界的视频线的部分被脉冲处理器消隐。脉冲处理器响应传统的水平速率和垂直速率脉冲，用于开发宽度以垂直速率变化的消隐脉冲。修改的消隐脉冲被施加到常规的消隐电路，以消除延伸超出所需图像区域的视频线的部分。还描述了抛物线发生器用于开发修改的消隐脉冲。

9. 发明授权

US4435841A Communications receiver having a switchable filter input stage 失效
标题翻译：通信接收机具有可切换的滤波器输入级
公开(公告)号：US4435841A
公开(公告)日：1984-03-06
申请号：US353694
申请日：1982-03-01
申请人： Pierre Dobrovolny
发明人： Pierre Dobrovolny
IPC分类号： H03H7/01 , H04B1/26 , H03H7/00
CPC分类号： H04B1/26 , H03H7/01 , H03H7/1758
摘要： A multichannel communications receiver, e.g. a CATV converter, includes a switched filter for reducing third order intermodulation distortion by limiting the number of channels processed by the receiver. In a preferred embodiment, the filter is switchable between a highpass and a lowpass configuration by a control signal supplied to two switching diodes. The input and output of the filter are coupled by a mutual inductance which partially compensates for the effect of parasitic inductance at higher frequencies.
摘要翻译：多通道通信接收机，例如 CATV转换器包括用于通过限制由接收机处理的信道数量来减少三阶互调失真的开关滤波器。在优选实施例中，通过提供给两个开关二极管的控制信号，滤波器可在高通和低通配置之间切换。滤波器的输入和输出通过互感耦合，该互感部分地补偿较高频率下的寄生电感的影响。

10. 发明授权

US4424594A Extended range tunable resonant circuit for a VHF television receiver tuning system 失效
标题翻译：用于VHF电视接收机调谐系统的扩展范围可调谐谐振电路
公开(公告)号：US4424594A
公开(公告)日：1984-01-03
申请号：US308018
申请日：1981-10-05
申请人： Peter C. Skerlos , Peter Strammello, Jr.
发明人： Peter C. Skerlos , Peter Strammello, Jr.
IPC分类号： H03J5/24 , H04B1/26
CPC分类号： H03J5/244
摘要： An extended range tunable resonant circuit for use in a VHF television receiver tuning system comprises a bandswitchable inductive network connected to a low series resistance gallium arsenide varactor diode. The resonant circuit, when operated in response to appropriate bandswitching signals and tuning voltages, is effective for establishing a plurality of tuning bands collectively defining an extended sub-UHF tuning range from about 54 MHz to at least 408 MHz.
摘要翻译：用于VHF电视接收机调谐系统的扩展范围可调谐谐振电路包括连接到低串联电阻砷化镓变容二极管的带通开关感应网络。谐振电路在响应于适当的频带切换信号和调谐电压而操作时对于建立共同定义从约54MHz至至少408MHz的扩展子UHF调谐范围的多个调谐频带是有效的。

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