专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4933749A Color television standard identification circuit 失效
标题翻译：彩色电视标准识别电路
公开(公告)号：US4933749A
公开(公告)日：1990-06-12
申请号：US310792
申请日：1989-02-14
申请人： Johannes P. M. Van Lammeren , Armand M. Stuivenwold , Henricus T. P. J. Van Elk , Bruno P. J. M. Motte
发明人： Johannes P. M. Van Lammeren , Armand M. Stuivenwold , Henricus T. P. J. Van Elk , Bruno P. J. M. Motte
IPC分类号： H04N9/00 , H04N9/64
CPC分类号： H04N9/642
摘要： A PAL-NTSC color television standard identification circuit, comprising a first demodulation circuit (7) for a reference component and a second demodulation circuit (11) for a possible color identification component of a color synchronizing signal, can perform a reliable identification by means of a digital decoding circuit (81) for the output signals of the demodulation circuits if the second demodulation circuit (11) is adapted (41, 45, 49) to demodulate along an axis slightly differing from the axis of the color identification component (FIG. 1).

2. 发明授权

US4963831A Self adjusting frequency demodulating integrated circuit 失效
标题翻译：自调频解调集成电路
公开(公告)号：US4963831A
公开(公告)日：1990-10-16
申请号：US465561
申请日：1990-01-16
申请人： Armand M. Stuivenwold , Johannes P. M. Van Lammeren , Henricus T. P. J. van Elk , Bruno P. J. M. Motte
发明人： Armand M. Stuivenwold , Johannes P. M. Van Lammeren , Henricus T. P. J. van Elk , Bruno P. J. M. Motte
IPC分类号： H04N9/64 , H03B1/00 , H03D3/00 , H03D3/02 , H03D3/24 , H03D13/00 , H03L7/06
CPC分类号： H03D3/241 , H03D3/001 , H03B2200/0036 , H03B2200/0038 , H03B2201/02 , H03D13/008
摘要： Self-adjusting frequency demodulation circuit comprising a frequency demodulator (13) which is designed as an integrated circuit, the adjustment being effected with the aid of a calibration signal source (7) of one single frequency and a measuring circuit (113, 35, 101) coupled to an output (113) of the frequency demodulator (13) by controlling the output signal amplitude of the frequency demodulation circuit with a multiplier (21) which is controllable by the measuring circuit and forms part of a tuning correction circuit which optionally may further include a level shifting circuit (57). The frequency demodulation circuit is particularly suitable for use in a SECAM color television receiver, only one frequency demodulator then being required for demodulating both the two color difference signals and the identification signal.

3. 发明授权

US4998074A Transistor circuit with base-current compensation 失效
标题翻译：具有基极电流补偿的晶体管电路
公开(公告)号：US4998074A
公开(公告)日：1991-03-05
申请号：US416575
申请日：1989-10-03
申请人： Johannes P. M. Van Lammeren , Armand M. Stuivenwold , Henricus T. P. J. Van Elk
发明人： Johannes P. M. Van Lammeren , Armand M. Stuivenwold , Henricus T. P. J. Van Elk
IPC分类号： H03F1/56 , H03F3/34 , H03H11/08
CPC分类号： H03F1/56 , H03H11/08
摘要： An emitter-coupled transistor pair consisting of a first (T1) and a second (T2) transistor in which the a.c. component (+ib) in the base-current of the first transistor is compensated for by the a.c. component (-ib) of the second transistor. A replica of the later a.c. component (-ib) is available in the base-current of a third transistor (T3) which has its collector-emitter path connected in the collector line of the second transistor and which has its base coupled to the base of the first transistor.

4. 发明申请

US20100223653A1 DIGITAL VIDEO BROADCAST RECEIVER AND METHOD FOR RECEIVING DIGITAL VIDEO BROADCAST DATA 审中-公开
标题翻译：数字视频广播接收机和接收数字视频广播数据的方法
公开(公告)号：US20100223653A1
公开(公告)日：2010-09-02
申请号：US12733190
申请日：2008-08-18
申请人： Arie G. C. Koppelaar , Onno Eerenberg , Armand M. Stuivenwold
发明人： Arie G. C. Koppelaar , Onno Eerenberg , Armand M. Stuivenwold
IPC分类号： H04N5/44
CPC分类号： H04N21/23406 , H04N21/4331 , H04N21/4345 , H04N21/4384 , H04N21/44004 , H04N21/64315
摘要： A digital video broadcast receiver for receiving data of a plurality of services (S1-S3) which are transmitted in bursts of data over a transmission channel is provided. The receiver comprises a rendering unit (HH) for rendering data of a selected first service (S1) from the plurality of services (S1-S3). The receiver furthermore comprises at least one memory unit (FM, SC) for caching at least one received burst of data associated to the selected first service (S1) of the plurality of services (S1-S3). The memory is furthermore used for caching at least a first part of a received burst of data of at least a second service (S2) of the plurality of services (S1-S3). The receiver furthermore comprises an input unit (HH) for inputting a zap command to switch the rendering of the first service (S1) to a second service (S2) of the plurality of services (S1-S3). The rendering unit (HH) is furthermore adapted to render at least the cached first part of the received burst of data of the second service (S2) when the zap command is received by the input unit (HH).
摘要翻译：提供了一种数字视频广播接收机，用于接收通过传输信道以数据突发方式发送的多个服务（S1-S3）的数据。接收机包括用于从多个服务（S1-S3）呈现所选择的第一服务（S1）的数据的呈现单元（HH）。接收机还包括至少一个存储单元（FM，SC），用于高速缓存与多个服务（S1-S3）中的所选择的第一服务（S1）相关联的至少一个接收到的数据突发。此外，存储器还用于高速缓存多个服务（S1-S3）中的至少第二服务（S2）的所接收的数据突发的至少第一部分。接收机还包括用于输入zap命令以将第一服务（S1）的呈现切换到多个服务（S1-S3）中的第二服务（S2）的输入单元（HH）。再现单元（HH）还适于当输入单元（HH）接收到zap命令时，至少渲染所接收的第二服务的突发数据的第一部分（S2）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式