公开(公告)号：US6076133A

公开(公告)日：2000-06-13

申请号：US846333

申请日：1997-04-30

申请人： James W. Brainard ,  Mark E. Taylor ,  Larry W. Kunkel ,  Stephen A. Walsh ,  Michael A. Provencher

发明人： James W. Brainard ,  Mark E. Taylor ,  Larry W. Kunkel ,  Stephen A. Walsh ,  Michael A. Provencher

IPC分类号： G06F1/18 ,  G06F3/02 ,  H03M11/20 ,  G06F9/46

CPC分类号： G06F1/181 ,  G06F3/02 ,  H03M11/20

摘要： The invention is a computer interface with a hardwired button array on the computer chassis for simulating the apparatus of common consumer electronic devices. Each button of the array of buttons is connected to at least two wires, with the depression of a button causing an electrical connection between the corresponding two wires. The voltage on one of these wires is forced to a steady-state logic low, while the voltage on the other wire is allowed to float electrically free. Nonetheless, the second wire is at a steady-state high voltage due to that wire's connection through a pull-up resistor to a voltage source. Upon electrical connection, the wire that is floating free acquires a logic low voltage. In response, a line state detector sends an interrupt signal to a microprocessor, which transitions the voltage on the wires forced to a steady-state logic low from a logic low to a free floating state. If the transitioned wire is connected to the depressed switch, the voltage on it rises since it is now connected through a pull-up resistor to a voltage source. Thus, the system can detect which button has been depressed since the system discerns both of the wires connected to the depressed button.

摘要翻译： 本发明是一种计算机接口，其具有用于模拟普通消费电子设备的设备的计算机机箱上的硬连线按钮阵列。 按钮阵列中的每个按钮连接到至少两根电线，按下一个按钮导致相应的两条电线之间的电气连接。 其中一根电线上的电压被强制为稳态逻辑低电平，而另一根导线上的电压允许电气浮动。 尽管如此，由于电线通过上拉电阻到电压源的连接，第二线处于稳态高电压。 在电气连接时，无浮动的电线获取逻辑低电压。 作为响应，线路状态检测器向微处理器发送中断信号，微处理器将强制的电线上的电压从逻辑低电平转变为自由浮动状态。 如果转换线连接到按压开关，则其上的电压上升，因为它现在通过上拉电阻连接到电压源。 因此，系统可以检测哪个按钮已被按下，因为系统识别连接到按压按钮的两根电线。

公开(公告)号：US5987537A

公开(公告)日：1999-11-16

申请号：US846544

申请日：1997-04-30

申请人： James W. Brainard ,  Mark E. Taylor ,  Larry W. Kunkel ,  Stephen A. Walsh ,  Michael A. Provencher

发明人： James W. Brainard ,  Mark E. Taylor ,  Larry W. Kunkel ,  Stephen A. Walsh ,  Michael A. Provencher

IPC分类号： G06F13/24 ,  G06F13/14

CPC分类号： G06F13/24

摘要： The invention is a computer system with a button array on the computer chassis for simulating the operation of common consumer electronic devices. Each button of the array of buttons is hardwired to the system processor. Upon activation of one of these buttons, an interrupt signal is sent to the system processor. The system processor halts whatever it is doing, and subsequently identifies the activated button. A signal generator attached to the buttons then sends the system processor a second interrupt signal, such that upon exiting the handling of the first interrupt, the system processor is presented with a second interrupt. The system processor then handles the second interrupt. While handling this second interrupt, the system processor executes whatever function corresponds to the activated button. The system processor then exits the handling of the second interrupt and resumes whatever activity it was engaged in before the activation of the button.

摘要翻译： 本发明是一种在计算机机箱上具有按钮阵列的计算机系统，用于模拟普通消费电子设备的操作。 按钮阵列中的每个按钮均硬连线到系统处理器。 激活这些按钮中的一个时，中断信号被发送到系统处理器。 系统处理器停止其正在做的任何事情，随后识别激活的按钮。 附接到按钮的信号发生器然后向系统处理器发送第二中断信号，使得在退出第一中断的处理时，向系统处理器呈现第二中断。 然后系统处理器处理第二个中断。 在处理此第二个中断时，系统处理器执行与激活的按钮相对应的任何功能。 然后，系统处理器退出第二个中断的处理，并在激活按钮之前恢复其所从事的任何活动。