公开(公告)号：US4053740A

公开(公告)日：1977-10-11

申请号：US643154

申请日：1975-12-22

Applicant: Lawrence David Rosenthal

Inventor： Lawrence David Rosenthal

IPC: A63F13/00 ,  G09G1/08 ,  A63F9/00 ,  G06F3/14 ,  G06F15/44

CPC classification number: A63F13/42 ,  A63F13/00 ,  G09G1/08

Abstract: A self-contained operator responsive video game system is disclosed. The system is capable of generating a virtually unlimited number of games where a player responds to and controls high resolution objects drawn on a display device such as a cathode ray tube. The system includes two interdependent sections, a computational section and a display section. The computational section includes means for entering operator commands, a program memory for storing the game rules and a digital processor for determining trajectories of moving objects and generating the line segment specification parameters required by the display section. The display section includes the same digital processor included in the computational section for transforming the line segment specification parameters into digital line drawing values and generating timed gating signals, digital-to-analog converters for converting the digital line drawing values into proportional signals and display drivers for generating the specified line segments on the screen of the cathode ray tube. Composites of the line segments repetitively drawn ultimately result in recognizable animated objects.

公开(公告)号：US4027148A

公开(公告)日：1977-05-31

申请号：US612045

申请日：1975-09-10

Applicant: Lawrence David Rosenthal

Inventor： Lawrence David Rosenthal

IPC: G09G1/08 ,  G06F15/34 ,  G06F3/14

CPC classification number: G09G1/08

Abstract: A vector generator having a digital input and a cathode ray tube (CRT) display output is disclosed. Digital values specifying the initial point of the line segment in Cartesian coordinates are converted to proportional voltages applied across the capacitors of two identical resistance-capacitance networks which control the positioning of the CRT beam. A second pair of digital values defining the length and direction of the line segment with respect to the initial point are normalized digitally by left shifts until the larger of the pair equals or exceeds a normalization constant. The normalized values are added to the initial point coordinates, and the sums are then converted to proportional voltages applied to the resistors of the two networks. Simultaneously, a timer preset during the normalization operation is started and the CRT beam is turned on to start the drawing of the line segment. As a result of the normalization, the voltages applied to the RC networks are larger than needed to draw the segment. Consequently, the beam will be turned off by the timer well before the outputs of the RC networks reach the applied voltages. Thus, line segments of widely differing lengths are drawn at a normalized fast rate and are displayed at a normalized uniform visual intensity on the CRT.

Abstract translation: 公开了一种具有数字输入和阴极射线管（CRT）显示输出的矢量发生器。 指定笛卡尔坐标中线段的初始点的数字值被转换为施加在两个相同电阻 - 电容网络的电容器上的比例电压，这两个电阻 - 电容网络控制CRT光束的定位。 定义相对于初始点的线段的长度和方向的第二对数字值通过左移进行数字归一化，直到该对中的较大者等于或超过归一化常数。 归一化值被添加到初始点坐标，然后将这些和转换成施加到两个网络的电阻器的比例电压。 同时，在归一化操作期间预设的定时器开始并且CRT光束被接通以开始绘制线段。 作为归一化的结果，施加到RC网络的电压大于绘制段所需的电压。 因此，在RC网络的输出达到施加的电压之前，光束将被定时器关闭。 因此，长度不同的线段以归一化的快速绘制，并以CRT上的归一化均匀视觉强度显示。