A video cassette recorder has a video screen zooming function, capable of zooming an optional region of one of plural still pictures sequentially displayed on a screen, as one picture. A digital signal processing unit converts composite video signals into digital video signals and a first memory unit stores the digital video signals by frames. A zoom signal processing unit zooms only digital video signals corresponding to a predetermined zoom region from the digital video signals so as to reconfigure them as digital video signals corresponding to one frame. A second memory unit stores the zoomed digital video signals by frames. A first switch selects the digital video signals from the first memory unit in a stop mode or digital video signals from the second memory unit in a zoom mode. Under a control of a control signal generating unit, an RGB matrix circuit reconfigures the digital video signals from the first switch unit as R, G and B color analog signals, and a second switch selects and outputs original composite video signals in a playback mode and outputs signals from the RGB matrix circuit in the stop mode or the zoom mode, under control of the control signal generating unit.
In a data communication apparatus for encoding information data by using a predetermined encoding method, encoded information data is transmitted isochronously with a predetermined communication cycle when the encoding method corresponds to a decoding method at an object node apparatus and non-encoded information data is transmitted asynchronously with the communication cycle when the encoding method does not correspond to the decoding method at the object node apparatus. It is therefore possible to perform an encoding process for the information data to be transmitted, in accordance with a decoding performance at the object node apparatus, to improve a communication efficiency, and to reduce a capacity of a memory used for communications.
A method and apparatus for adjusting font size in an electronic program guide display are provided. A multiple channel broadcasting system generates an electronic program guide identifying channels and corresponding programs in a broadcasting system. The broadcast system determines a number of characters to be displayed in an area of an electronic program guide. The broadcast system determines a number of display pixels available for display of the characters. The broadcast system adjusts the font size of the characters to display the number of characters within the number of pixels available.
