公开(公告)号：US06243083B1

公开(公告)日：2001-06-05

申请号：US09119623

申请日：1998-07-21

申请人： Akira Arimizu ,  Shozo Mitarai ,  Toshiaki Inoue

发明人： Akira Arimizu ,  Shozo Mitarai ,  Toshiaki Inoue

IPC分类号： G09G500

CPC分类号： H04N9/646 ,  H04N5/208

摘要： To obtain a clear-cut picture image by correcting a contour of a video signal of a natural picture image and the like from a computer. Video signals of, for example, three primary colors (R, G, B), including a natural picture image and the like produced by, for example, a computer from input terminals 1 are supplied to a mixing circuit (2) and mixed at a ratio of, for example, 0.6G+0.3R+0.1B to produce a signal corresponding to a luminance (Y). This signal is supplied to differentiation circuits 3A and 3B having different time constants each other and predetermined high frequency components are extracted therefrom, respectively, and these output signals are selected by a switch (4), and then supplied to an amplifying circuit 5. The gain of the amplifying circuit 5 is arbitrarily controlled by a signal from a control terminal (6). Then, a signal from the amplifying circuit (5) is supplied to adding circuits 7R, 7G and 7B and added therein to respective video signals of R, G and B to then be derived from output terminals 8R, 8G and 8B.

摘要翻译： 通过从计算机校正自然图像图像等的视频信号的轮廓来获得清晰的图像图像。例如，包括自然图像的三原色（R，G，B）的视频信号 由例如来自输入端子1的计算机产生的图像等被提供给混合电路（2），并以例如0.6G + 0.3R + 0.1B的比率混合，以产生对应于 亮度（Y）。 该信号被提供给具有不同时间常数的微分电路3A和3B，并且分别从其中提取预定的高频分量，并且这些输出信号由开关（4）选择，然后提供给放大电路5。 放大电路5的增益由来自控制端子（6）的信号任意地控制。 然后，将来自放大电路（5）的信号提供给加法电路7R，7G和7B，并将其加到相应的R，G和B的视频信号中，然后从输出端子8R，8G和8B导出。

公开(公告)号：US06295098B1

公开(公告)日：2001-09-25

申请号：US09348075

申请日：1999-07-06

申请人： Hitoshi Motonakano ,  Shozo Mitarai ,  Akira Arimizu

发明人： Hitoshi Motonakano ,  Shozo Mitarai ,  Akira Arimizu

IPC分类号： H04N5202

CPC分类号： H04N5/202 ,  H04N9/69

摘要： An illumination intensity correcting circuit including a curve fitting circuit formed by differential amplifier circuits and a load resistor, wherein the amplification factor of the curve fitting circuit is changed before and after each breakpoint voltage, the reference voltages of the differential amplifier circuits are set so that at least two breakpoint voltages are arranged in the range of a voltage of a video signal, and the amplification factors of the differential amplifier circuits are set so that the amplification factor of the curve fitting circuit in the range of the signal voltage inside of the two breakpoint voltages is smaller than the amplification factor outside of the two breakpoint voltages.

摘要翻译： 一种照明强度校正电路，包括由差分放大器电路和负载电阻器形成的曲线拟合电路，其中在每个断点电压之前和之后改变曲线拟合电路的放大系数，差分放大器电路的参考电压被设置为 在视频信号的电压范围内设置至少两个断点电压，并且设置差分放大器电路的放大系数，使得曲线拟合电路的放大系数在两个信号电压的范围内 断点电压小于两个断点电压以外的放大系数。

公开(公告)号：US06535255B2

公开(公告)日：2003-03-18

申请号：US09960986

申请日：2001-09-25

申请人： Hitoshi Motonakano ,  Shozo Mitarai ,  Akira Arimizu

发明人： Hitoshi Motonakano ,  Shozo Mitarai ,  Akira Arimizu

IPC分类号： H04N969

CPC分类号： H04N5/202 ,  H04N9/69

摘要： An illumination intensity correcting circuit including a curve fitting circuit formed by differential amplifier circuits and a load resistor, wherein the amplification factor of the curve fitting circuit is changed before and after each breakpoint voltage, the reference voltages of the differential amplifier circuits are set so that at least two breakpoint voltages are arranged in the range of a voltage of a video signal, and the amplification factors of the differential amplifier circuits are set so that the amplification factor of the curve fitting circuit in the range of the signal voltage inside of the two breakpoint voltages is smaller than the amplification factor outside of the two breakpoint voltages.

公开(公告)号：US5784117A

公开(公告)日：1998-07-21

申请号：US701392

申请日：1996-08-22

申请人： Shozu Mitarai ,  Akira Arimizu

发明人： Shozu Mitarai ,  Akira Arimizu

IPC分类号： H04N5/46 ,  H04N9/00 ,  H04N9/64

CPC分类号： H04N5/46 ,  H04N9/642

摘要： The automatic-discriminating apparatus is constituted by functional blocks such as a killer circuit, an APC circuit, a switch, and an automatic discrimination control circuit. The switch connects one of crystal oscillators to a VCO of the APC circuit by a control signal from the automatic discrimination control circuit. The automatic discrimination control circuit divides one vertical scanning period into predetermined sections. When receiving a killer signal indicating the OFF state from the killer circuit at the predetermined sections even one time, it outputs a control signal holding the connection state thereof to the switch, and holds the APC circuit in the locking state. When receiving a killer signal indicating the ON state at the divided predetermined sections a predetermined number of times, it outputs a control signal connecting the other crystal oscillator through the VCO to the switch. As a result, the time for discriminating the TV broadcast systems can be shortened, a malfunction can be avoided, and a stable discrimination can be achieved.

摘要翻译： 自动识别装置由诸如杀伤电路，APC电路，开关和自动识别控制电路的功能块构成。 该开关通过来自自动识别控制电路的控制信号将晶体振荡器之一连接到APC电路的VCO。 自动识别控制电路将一个垂直扫描周期分成预定部分。 即使一次在预定部分从杀手电路接收到表示OFF状态的杀手信号时，也将保持其连接状态的控制信号输出到开关，并将APC电路保持在锁定状态。 当在划分的预定部分接收到指示接通状态的抑制信号预定次数时，它将通过VCO连接另一个晶体振荡器的控制信号输出到开关。 结果，可以缩短鉴别电视广播系统的时间，可以避免故障，并且可以实现稳定的辨别。