Projection type video display
    1.
    发明授权
    Projection type video display 失效
    投影型视频显示

    公开(公告)号:US07370980B2

    公开(公告)日:2008-05-13

    申请号:US10890988

    申请日:2004-07-15

    IPC分类号: G03B21/14 H04N3/22

    摘要: At the time of manual adjustment, a motor driving signal corresponding to a user's key operation is fed to a focusing motor from a microcomputer through a switch. At the time of automatic adjustment, the switch selects a motor driving signal from a sensor and feeds the selected motor driving signal to the focusing motor. The sensor contains a dedicated microcomputer. The dedicated microcomputer samples an image pick-up signal of a CCD line sensor in the sensor to generate contrast data, and automatically drives the focusing motor, to automatically make focusing adjustment.

    摘要翻译: 在手动调节时,通过开关从微型计算机将对应于用户的键操作的电动机驱动信号馈送到聚焦电动机。 在自动调节时,开关选择传感器的电机驱动信号,并将所选择的电机驱动信号馈送到聚焦电机。 传感器包含专用微型计算机。 专用微型计算机对传感器中CCD线传感器的摄像信号进行采样,生成对比度数据,并自动驱动聚焦电机,自动进行聚焦调整。

    Projection type video display and method of adjusting the same at factory shipping
    2.
    发明授权
    Projection type video display and method of adjusting the same at factory shipping 失效
    投影式视频显示及其在工厂出货时的调整方法

    公开(公告)号:US07156524B2

    公开(公告)日:2007-01-02

    申请号:US10891497

    申请日:2004-07-15

    摘要: A microcomputer performs image drawing processing of a projection video for adjustment by an OSD (On-Screen Display) circuit when it detects the press of an adjustment command key. The projection video for adjustment is an image having a black-and-white area high in contrast formed therein. The projection video for adjustment is picked up by a CCD line sensor in a sensor. A microcomputer has its input an image pick-up signal from the CCD line sensor, to make focusing adjustment and trapezoidal distortion correction on the basis of the image pick-up signal.

    摘要翻译: 微型计算机在检测到调整指令键的按下时,通过OSD(屏幕显示)电路进行用于调整的投影图像的图像绘制处理。 用于调整的投影视频是其中形成的对比度的黑白区域高的图像。 用于调整的投影视频由传感器中的CCD线传感器拾取。 微型计算机从CCD线传感器输入摄像信号,根据摄像信号进行聚焦调整和梯形失真校正。

    Projection type video display
    3.
    发明申请
    Projection type video display 失效
    投影型视频显示

    公开(公告)号:US20050012908A1

    公开(公告)日:2005-01-20

    申请号:US10890988

    申请日:2004-07-15

    摘要: At the time of manual adjustment, a motor driving signal corresponding to a user's key operation is fed to a focusing motor from a microcomputer through a switch. At the time of automatic adjustment, the switch selects a motor driving signal from a sensor and feeds the selected motor driving signal to the focusing motor. The sensor contains a dedicated microcomputer. The dedicated microcomputer samples an image pick-up signal of a CCD line sensor in the sensor to generate contrast data, and automatically drives the focusing motor, to automatically make focusing adjustment.

    摘要翻译: 在手动调节时,通过开关从微型计算机将对应于用户的键操作的电动机驱动信号馈送到聚焦电动机。 在自动调节时,开关选择传感器的电机驱动信号,并将所选择的电机驱动信号馈送到聚焦电机。 传感器包含专用微型计算机。 专用微型计算机对传感器中CCD线传感器的摄像信号进行采样,生成对比度数据,并自动驱动聚焦电机,自动进行聚焦调整。

    Synchronizing signal separating circuit separating synchronizing signal
from a composite video signal
    4.
    发明授权
    Synchronizing signal separating circuit separating synchronizing signal from a composite video signal 失效
    将同步信号与复合视频信号分离同步信号分离电路

    公开(公告)号:US4999707A

    公开(公告)日:1991-03-12

    申请号:US500981

    申请日:1990-03-29

    CPC分类号: H04N5/08

    摘要: A synchronizing signal separating circuit inverts and amplifies, in an inverter 12, a composite video signal received from a video amplifying circuit 100 through a coupling condenser 1. An output node B of the inverter 12 is connected to an input node A of the inverter 12 through a switch 14 and a bias resistor 10. A bias resistor 11 is connected between the input node A and a ground potential. An output of the inverter 12 is further inverted and amplified by an inverter 13 and outputted as a composite synchronizing signal and also supplied to a control input of the switch 14. As a result, the switch 14 is turned on in a synchronizing signal period, so that the coupling condenser 1 is charged with the output of the inverter 12 and also the electric charges of the coupling condenser 1 are discharged through the bias resistor 11 in other period than the synchronizing signal period. Therefore, irrespective of a APL of an inputted composite video signal, it is possible to maintain a level difference between a top level of the synchronizing signal and a separation level to be constant to correctly perform separation of the synchronization.

    摘要翻译: 同步信号分离电路在逆变器12中通过耦合电容器1将从视频放大电路100接收的复合视频信号进行反相放大。反相器12的输出节点B连接到逆变器12的输入节点A 通过开关14和偏置电阻器10.偏置电阻器11连接在输入节点A和地电位之间。 逆变器12的输出进一步由反相器13反相并放大,并作为复合同步信号输出,并提供给开关14的控制输入。结果,开关14在同步信号周期中导通, 使得耦合电容器1对逆变器12的输出进行充电,并且耦合电容器1的电荷在同步信号周期的其他周期内通过偏置电阻器11放电。 因此,无论输入的复合视频信号的APL如何,都可以将同步信号的顶层与分离级别之间的电平差保持为恒定,以正确地执行同步的分离。

    Television signal converter
    5.
    发明授权
    Television signal converter 失效
    电视信号转换器

    公开(公告)号:US4910771A

    公开(公告)日:1990-03-20

    申请号:US383270

    申请日:1989-07-19

    CPC分类号: H04N7/1713

    摘要: A television signal converter includes a CATV tuner having a channel converting function, a gain changing circuit for descrambling the output from the CATV tuner and the like, in order to convert a television signal such as a CATV signal formed by a scrambled video signal into a descrambled television signal of channel 3, for example. The descrambled channel 3 CATV signal outputted from the gain changing circuit includes noise in the reproduced audio signal since the audio carrier is influenced by gain changing. In the present invention, therefore, the audio signal is reproduced from an audio carrier extracted from the front stage of a gain changing circuit. Thus, the reproduced audio signal is released from noise caused by gain changing.

    摘要翻译: 电视信号转换器包括具有信道转换功能的CATV调谐器,用于对来自CATV调谐器的输出进行解扰的增益改变电路等,以将诸如由加扰视频信号形成的CATV信号的电视信号转换为 通道3的解扰频电视信号。 由于音频载波受增益变化的影响,从增益改变电路输出的解扰频道3 CATV信号包括再现的音频信号中的噪声。 因此,在本发明中,从从增益改变电路的前级提取的音频载波再现音频信号。 因此,再现的音频信号由增益变化引起的噪声释放。

    Projection type display device
    9.
    发明授权
    Projection type display device 失效
    投影式显示装置

    公开(公告)号:US06843569B2

    公开(公告)日:2005-01-18

    申请号:US10293618

    申请日:2002-11-14

    摘要: In a projection type display device having an electrical trapezoidal distortion correcting function, there are provided detection means for detecting an angle of inclination in the vertical direction of an optical axis of the projection type display device toward a screen surface, and control means for controlling the display position of an on screen display image displayed in a screen on the basis of the angle of inclination detected by the detection means.

    摘要翻译: 在具有电梯形畸变校正功能的投影型显示装置中,设置有检测装置,用于检测投影型显示装置的光轴的垂直方向的倾斜角度朝向屏幕表面,以及控制装置, 基于由检测装置检测到的倾斜角度,显示在屏幕上的屏幕上显示图像的显示位置。

    Cooling fan controller and liquid crystal projector
    10.
    发明授权
    Cooling fan controller and liquid crystal projector 有权
    冷却风扇控制器和液晶投影机

    公开(公告)号:US06709111B2

    公开(公告)日:2004-03-23

    申请号:US10157056

    申请日:2002-05-30

    IPC分类号: G03B2118

    CPC分类号: H05K7/20209 G05D23/1919

    摘要: A cooling fan controller controls a voltage for driving a cooling fan on the basis of a temperature detected by a temperature sensor. A first controller controls voltage for driving the cooling fan to a minimum voltage for starting the cooling fan. A second controller controls the voltage for driving the cooling fan to a driving voltage value corresponding to the detected temperature after the cooling fan is started. A relationship between the detected temperature in the voltage for driving the cooling fan is such that the higher the detected temperature becomes the larger the voltage for driving the cooling fan becomes. A predetermined minimum voltage for cooling fan control is lower than the minimum voltage for starting the cooling fan and a predetermined maximum voltage for cooling fan control is higher than the minimum voltage for starting the cooling fan.

    摘要翻译: 冷却风扇控制器基于由温度传感器检测到的温度来控制用于驱动冷却风扇的电压。 第一控制器控制用于驱动冷却风扇的电压到用于启动冷却风扇的最小电压。 第二控制器将冷却风扇驱动的电压控制为与冷却风扇开始后的检测温度对应的驱动电压值。 用于驱动冷却风扇的电压的检测温度之间的关系使得检测到的温度越高,用于驱动冷却风扇的电压变得越大。 用于冷却风扇控制的预定最小电压低于用于启动冷却风扇的最小电压,并且用于冷却风扇控制的预定最大电压高于用于启动冷却风扇的最小电压。