摘要:
A video mixing apparatus mixes a graphics video image and a playback video image at a plurality of mixture ratios in one image plane. Fade data indicative of the mixing ratio of at least one line of the playback video signal and the graphics video signal is sequentially generated in accordance with a predetermined order. The fade data is held into holding means and is outputted from the holding means synchronously with a horizontal sync signal. The levels of the playback video signal and the graphics video signal are individually adjusted in accordance with the fade data outputted from the holding means and the adjusted signals are added. The playback video signal and the graphics video signal are mixed at the mixing ratio set every line of one image plane. In a video apparatus using the graphics video image and playback video image, various kinds of effective video images can be formed by mixing the graphics video image of every video image such as background, person, characters, or the like and the playback video image.
摘要:
A video image mixing apparatus which can prevent a fluctuation of a mixed video image by a mixed video signal in the case where a playback video signal obtained by playing a recording medium in a special playing mode and a graphics video signal. When a discontinuity of the phase of a color burst signal in the playback video signal obtained by playing the recording medium is detected, the playback video signal and the graphics video signal are delayed by a predetermined time period and the delayed signals are mixed subsequently, thereby keeping the phases of chroma signals of the playback video signal and graphics video signal equal even in a special playing mode such as a still image reproducing mode or the like. In another embodiment, the mixed video signal of the playback video signal and graphics video signal is delayed by a predetermined time and is generated.
摘要:
A video signal mixing apparatus for mixing a playback composite video signal produced by playing a recording medium and a graphics composite video signal generated on the basis of video data read from a memory device, wherein a vertical synchronizing signal of the playback composite video signal is forcedly generated in response to a vertical synchronizing signal of the graphics composite video signal to make the number of horizontal scanning lines of the playback composite video signal coincident with the number of horizontal scanning lines of the graphics composite video signal.
摘要:
A stereoscopic image displaying apparatus includes: field switching signal generating unit for generating a field switching signal alternately indicating odd field periods and even field periods from an original picture signal; delaying unit for delaying the original picture signal and producing a delayed picture signal; stereoscopic image signal generating unit for alternately selecting one of the original picture signal and the delayed picture signal in accordance with the field switching signal to generate a stereoscopic image signal; and display unit for displaying the stereoscopic image signal by alternately supplying pictures of the original picture signal to one eye of a user and pictures of the delayed picture signal to the other eye of the user on the basis of the field switching signal.
摘要:
A video signal recording apparatus digitizes video signals, writes the digital data in a memory and then reads them therefrom before recording the video signals on a recording medium. The orders of access to the addresses in the memory in write and read modes differ from each other with a predetermined relationship. A video signal reproducing apparatus reads recorded video signals from a recording medium, digitizes the video signals, writes the digital data in a memory and then reads them therefrom. The orders of access to the addresses in the memory in write and read modes differ from each other with a predetermined relationship.
摘要:
A network I/O system includes a central communication unit having a communication port and a plurality of terminal communication units each having an upstream communication port and a plurality of downstream ports wherein the central communication unit transmits, to the terminal communication units, routing data of the central communication unit to the terminal communication units for setting identification numbers in the terminal communication units and data of the identification number of the terminal communication units, the terminal communication units refer to the data to transmit to the downstream communication port and set the identification number in a targeted terminal communication unit, and a communication port number of the downstream communication port is appended to routing recognition data to be transmitted from the terminal communication units to the central communication unit at a time of passing through the terminal communication units, thereby recognizing a network configuration.
摘要:
An ATM switching system which includes PVC allocation circuits corresponding to output queues. At the time of arrival of the leading cell of each burst data, if the output line has room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving cells having the same PVC identification information as the stored identification information are input to an output buffer, and the cells of the remaining burst data are all discarded. Even when a plurality of burst data compete for the same output line, the fact that all the cells other than the first-arriving admitted burst data are discarded prevents the cells from being input other than within a predetermined bandwidth and localizes the burst data affected by the cell discarding due to output queue overflow.
摘要:
In an audio communication control unit, audio signals from at least three terminals connected to a switching part are branched to left- and right-channels audio signals, then the left- and right-channel audio signals are processed using sound image control parameters in such a manner as to impart them with target positions different for each terminal, then all left-channel audio signals corresponding to the respective terminals are mixed together into a left-channel mixed audio signal and all the right-channel audio signals are mixed together into a right-channel mixed audio signal, and these left- and right-channel mixed audio signals are distributed and sent to all the connected terminals.
摘要:
A central communication unit 110 and a terminal communication unit 120 are provided with a priority order number storing unit 115 and fifo type storing units, and perform communication according to the priority order of data communication stored in the priority order number storing unit 115. At this time the priority order and the layout of respective devices of control objects are optimized and set through a software processing in a host computer according to the communication cycle and response performance required for the devices of control objects, thereby, the plurality of devices of control objects requiring different communication cycles and response performances can be connected on one network.
摘要:
A charging control circuit according to an embodiment of the present invention includes a detecting circuit and a charging transistor control unit for controlling a charging transistor supplying a first current, a current source for supplying a second current, and a current source control unit for controlling the current source. For example, if a secondary battery is charged using an adaptor endowed with a current-limiting function, during a constant-current charging period in which a charging voltage of the secondary battery reaches 3.2 V to 4.2 V, the secondary battery is charged with the first current I1, and during a constant-voltage charging period after the voltage reaches 4.2 V, the secondary battery is charged with the first charging current and the second charging current.