Abstract: A digitized video system utilizing a spatial light modulator which includes deformable mirror devices to form an image. The image is projected onto a moving surface which intersects each point within a three dimensional space to allow the display of a three dimensional image. Each mirror cell is capable of projecting an individual beam. The individual beams form one portion of an image.

Abstract: A pointer for a three dimensional display utilizes sensors on the display for the user to communicate with the display by means of a hand held device. The three dimensional display can have a spatial light modulator with a plurality of deformable mirror cells each with several memory cells.

Abstract: A video display system which can receive and display a number of different video signals having different formats utilizing a processor extract the image from a stream of digital signals to produce a digitized image to be displayed by a digital spatial light modulator.

Abstract: A data communication system in which a host data processing system is responsive to an automated sequence of data processing request signals from a remote data processing system. The remote data processing system includes a means for generating and storing in a nonvolatile read/write memory a log on signal which initiates the communications and causes the host system to be responsive to the remote system, a plurality of data processing request signals specifying operations to be performed by the host system and a log off signal for terminating the data communications. Special data processing request signals may include a predetermined delay before transmission of the next data processing request signal by the remote system or may require the host system to transmit a predetermined response signal in order to enable continuation of the sequence of data processing request signals from the remote system.

Abstract: A data communication system in which a host data processing system is responsive to an automated sequence of data processing request signals from a remote data processing system. The remote data processing system includes a means for generating and storing in a nonvolatile read/write memory a log on signal which initiates the communications and causes the host system to be responsive to the remote system, a plurality of data processing request signals specifying operations to be performed by the host system and a log off signal for terminating the data communications. Special data processing request signals may include a predetermined delay before transmission of the next data processing request signal by the remote system or may require the host system to transmit a predetermined response signal in order to enable continuation of the sequence of data processing request signals from the remote system.

Abstract: A data communication system for controlling communications between a host data processing system and a remote data processing system. The host system communicates a plurality of output condition data signals to the remote system for storage therein. The host system then specifies the recall and output of the condition data signals previously stored in the remote system by transmitting corresponding condition name signals. The host system specifies whether condition data signals or condition name signals are to be sent to the remote system. The host system may send a predetermined number of condition data signals for storage at fixed sequential addresses within the remote system or the host system may specify particular addresses for storage of particular data signals in a memory within the remote system which has previously stored therein a set of default condition data signals. The remote system may include a means for repeating outputs specified by the host system.

Abstract: A data terminal having an error checking file transfer mode which tests received data to determine whether it is valid data and transmits an acknowledge or nonacknowledge signal dependent upon the results of the valid data test. This valid data test preferably takes the form of some type of logical redundancy check matching received data signal with a received redundancy signal. Valid received data is stored in an internal random access memory or an external mass memory. The data terminal preferably exchanges hand shaking signals prior to the initiation of data transfer. The data terminal preferably generates a nonacknowledge signal when a predetermined time has elapsed since the last received signal, echoes an end of file signal when an end of file signal is received and transmits a reset signal if the communications are garbled. In the preferred embodiment the data terminal includes a simple processing unit operating under the control of a program stored in a plug-in read only memory.

Abstract: A communications control system for enabling a small computer system, such as a personal computer, to emulate a terminal and thus to communicate with a remote system. Incoming data from the remote system is entered into a circular buffer on an interrupt basis. The communications control system alternately scans the circular buffer for newly entered data and the keyboard for operator generated messages. Any control characters are decoded and appropriate actions taken. Received alphanumeric characters are stored in a display memory for video display and in a system RAM for later retrieval and study. The display memory is optionally loaded in an intelligent wrap mode in which words are not broken on wrap around or a non-wrap mode which preserves the columns of the data as originally received. Scrolling controls enable the operator to enter a desired portion of the data stored in the system RAM into the display memory for viewing in either wrap-on or wrap-off modes.