A level display device for audio signal comprises a plurality of bandpass filters having filtering bands of respectively different center frequencies, for band-dividing and filtering an input signal supplied thereto through an input terminal, a pulse width converter provided in correspondence with respective bandpass filters, for converting the input signal into a signal in synchronism with a vertical synchronizing signal of a video signal and having a pulse width in accordance with the level of...

A display device interface circuit comprises a primary skew circuit for skewing a video signal for a predetermined period converted to a serial signal; a secondary skew circuit for skewing a blank signal which determines the flyback time for a predetermined period; and a logic circuit for adding signal outputs of the secondary skew circuit to the head and tail of the video signal skewed by the primary skew circuit for a predetermined period.

A television receiver is disclosed, which receives two television signals and compresses a time axis of one of the television signals and inserts the compressed signal to a portion of the other television signal to display both signals on the same screen. A signal indicating a boundary of the two images is produced from a synchronizing signal derived from one of the two received television signals and the boundary indicating signal is superimposed on one or both of a brightness signal and a chro...

A set of overlay images are established within a stack of memory maps for superpositioning over a host image on a raster display. The overlay images include legends, grids, cursors, graphs, formats, etc. which are primarily empty background with few actual image pixels. Overlay conflict between corresponding image pixels from different images is resolved by priority logic in accordance with the order of the image planes within the stack. The background pixels maintain a video switch in the host ...

A video system for assisting automobile traffic is provided. Radio frequency signals concerning traffic flow and build-up are transmitted to a receiver unit contained within a motor vehicle. The receiver unit contains road map information stored in a memory and only information relating to traffic flow is transmitted. The receiver superimposes the traffic flow information with the map information to produce a composite image of traffic conditions. The traffic flow informationis updated and store...

A pattern generating apparatus produces a large plurality of form patterns from a much smaller plurality of basic form symbols. These basic symbols are stored in a memory and are accessed in different ways so that as output from the memory each basic symbol may be rotated by varying degrees. In each of its rotated configurations each basic symbol thereby represents a different pattern.

A system and a method of monitoring and displaying in which control screen indicating a control data of a control device for process control displayed on the display screen of a display unit by a touch operation on a diagram of the control device, the control data being further selected by another touch operation. The display condition of the control data display area thus changes, the operator being permitted to visually check whether the operation has been selected correctly. After visual conf...

An arousal level judging apparatus has a skin potential level (SPL) detection device, a potential change detection device for detecting occurrance and convergence of a pulse of the signal from the SPL detection device, the pulse being caused by skin potential response (SPR), a storing device for storing the SPL value as a reference value, and a comparator for comparing SPL with the reference value to detect a SPL decrease to detect an arousal level decrease of a driver, etc. The reference value ...

Box cursors consisting of lines of identical thickness are displayed using a bit inverting technique so that overlapped portions of the cursors may be differentiated. Masks are prepared, one for each of the box cursors, which have patterns which, when exclusive ORed, result in a pattern including 1 bits. The box cursors are generated having lines corresponding to respective ones of the masks. Thus, even though box cursors may overlap on the display, the side or sides of the overlapping cursors w...

Two-way communications between a video system and a control device is disclosed. The communications links comprise visible light, IR light, or a combination of visible and IR light. The communications link provide a convenient route to capture data or lock system features or various combinations thereof.