公开(公告)号：US4891565A

公开(公告)日：1990-01-02

申请号：US211306

申请日：1988-06-24

Applicant: Hendrik Ten Pierick ,  Edward M. Ponte ,  Alko F. E. De Vries

Inventor： Hendrik Ten Pierick ,  Edward M. Ponte ,  Alko F. E. De Vries

IPC: H04N3/223 ,  H03K4/02 ,  H04N3/27

CPC classification number: H03K4/026 ,  H03K4/023 ,  H04N3/27

Abstract: A field deflection circuit in a picture display device including a sawtooth generator for generating an essentially sawtooth-shaped voltage. The circuit is provided with a storage element in which information is stored under the influence of applied clock pulses. Per field period the number of times when the content of the storage element is changed is reduced to a predetermined number, e.g. because a number of clock pulses is omitted. The clock pulses applied to the sawtooth generator are then distributed as regularly as possible.

公开(公告)号：US4755727A

公开(公告)日：1988-07-05

申请号：US929938

申请日：1986-11-12

Applicant: Edward M. Ponte

Inventor： Edward M. Ponte

IPC: H03K4/04 ,  H03K4/69 ,  H04N3/16 ,  H04N3/227 ,  H04N3/23 ,  H01J29/70 ,  H01J29/72

CPC classification number: H03K4/693

Abstract: A field deflection circuit for use in a picture display device, comprising an amplifier to whose output the series network of a field deflection coil, a separated capacitor and a negative feedback resistor is disclosed. A circuit is provided in parallel with the separating capacitor for fixing the d.c. component of the voltage across the capacitor at a more less constant value. Frequency-dependent negative feedback networks may therefore be omitted.

Abstract translation: 一种用于图像显示装置的场偏转电路，包括一个放大器，用于输出一个场偏转线圈的串联网络，一个分离的电容器和一个负反馈电阻器。 与用于固定直流电容器的分离电容并联提供电路。 在电容器两端的电压的分量以更小的常数值。 因此可以省略频率相关的负反馈网络。

公开(公告)号：US4746842A

公开(公告)日：1988-05-24

申请号：US918416

申请日：1986-10-14

Applicant: Edward M. Ponte ,  Steven J. van Raalte ,  Dirk J. A. Teuling

Inventor： Edward M. Ponte ,  Steven J. van Raalte ,  Dirk J. A. Teuling

IPC: H03K4/501 ,  H03K4/50 ,  H03K4/502 ,  H04N3/223 ,  H04N3/27 ,  H04N5/12 ,  H01J29/70 ,  H01J29/76

CPC classification number: H03K4/502

Abstract: A circuit arrangement for generating a sawtooth-shaped signal for the field deflection in a picture display device with an amplitude which is substantially independent of the field frequency is disclosed. The value of the sawtooth-shaped signal during the occurrence of a sampling pulse is compared with a reference value for generating a control signal controlling the slope of the sawtooth-shaped signal. To eliminate instability in amplitude, which might result from phase jitter of the incoming field synchronizing signal and might cause an interlace error, sampling pulses are applied whose repetition frequency is substantially equal to the nth part of the field frequency, where n is an integer which is larger than 1, preferably a small multiple of 2.

Abstract translation: 公开了一种电路装置，用于产生具有基本上与场频无关的幅度的图像显示装置中的场偏转的锯齿形信号。 将采样脉冲发生期间的锯齿形信号的值与用于产生控制锯齿形信号的斜率的控制信号的参考值进行比较。 为了消除振幅的不稳定性，这可能是由于入射场同步信号的相位抖动引起的，并且可能引起隔行扫描错误，施加采样脉冲，其重复频率基本上等于场频的第n部分，其中n是整数， 大于1，优选2的小倍数。