摘要:
A system comprises a video camera for producing one field portion of a video signal in a second predetermined period during a first predetermined period which is longer than the second predetermined period, a recorder for recording the one field portion of the video signal from the video camera in the second predetermined period during the first predetermined period and a display device arranged to make a vertical scanning from the upper to the lower side of an effective display surface in the second predetermined period during the first predetermined period for displaying an image related to the video signal produced from the video camera.
摘要:
An image signal recording apparatus arranged to be selectively set in a still-image recording mode and a motion-picture recording mode. A storage memory stores on picture portion of the motion-picture video signal. During the still-image recording mode, the content of the storage memory is repetitively read out of the storage memory thereby forming a video signal representing the still-image. The duration of still-image recording mode is longer than a period required to store two picture portions of the motion-picture in the storage memory.
摘要:
An image information signal transmitting system of this invention is a system which divides an image information signal for one picture constituted by a set of picture element data into blocks each constituted by a predetermined quantity of picture element data, transmits the picture element data on each of the blocks on the basis of a mode selected from among a plurality of transmission modes each of which allows a different quantity of picture element data to be transmitted and a mode information signal indicative of the transmission mode of each of the blocks, and restores the picture element data on each of the blocks to the original image information signal. The system is arranged to store the transmitted picture element data, read out the stored picture element data at a data readout rate of one kind which is selected from among a plurality of different data readout rates and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal, and implement a data restoring processing on the picture element data thus read on the basis of a data restoring processing of one kind which is selected from among a plurality of different data restoring processings and which corresponds to the kind of transmission mode indicated by the transmitted mode information signal. With this arrangement, it is possible to realize reductions in the size, weight and cost of the apparatus without deteriorating an image information signal to be transmitted.
摘要:
In an apparatus for recording an information signal on a recording medium forming many parallel tracks on the medium and for reproducing the information signal from the medium, a tracking control system is arranged to record a pilot signal of a given frequency along with the information signal in the first of the many tracks; to have the pilot signal also recorded in second and third tracks adjoining the first track on both sides thereof but at pilot signal phases shifted from the pilot signal phase of the first track to equal degrees in the directions opposite to each other at parts of the second and third tracks aligned perpendicularly to the longitudinal direction of the first track; and, in reproducing the information signal, the position of the recording medium and that of a reproducing head relative to each other are controlled on the basis of the pilot signal of the given frequency reproduced by the reproducing head from the first track along with the information signal.
摘要:
A system for transmitting information signal in which a temporally correlated group of image planes are continuously formed comprises: dividing means which divides the information signal into separate image planes and further divides each image plane portion of the signal into a plurality of blocks; first transmitting means for transmitting in a first degree of information density the first of the plurality of blocks obtained from the dividing means; second transmitting means for transmitting in a second degree of information density the second of the plurality of divided blocks obtained from the dividing means; and transmission inhibiting means for inhibiting transmission of the third of the plurality of divided blocks obtained from the dividing means by dividing a present image plane portion of the information signal.
摘要:
An image information signal transmitting system for transmitting an image information signals which continuously forms a temporally correlated group of image planes is arranged to divide each image plane portions of the image information signal into a plurality of blocks; and, in determining for every divided block included in each of the image planes the adoption of one of a plurality of information transmitting modes provided for different information transmitting density values, the information transmitting modes for the plurality of blocks of a presently transmitting image plane portion of the signal are determined at least according to the information transmitting modes which hae been used for the plurality of blocks of a previously transmitted image plane portion of the signal.
摘要:
An image information signal transmitting system according to the present invention is structured in such a manner that an image information signal composed of a plurality of picture element data corresponding to one picture is stored in units of blocks each of which is composed of a predetermined number of picture element data, the image information signal composed of a plurality of picture element data corresponding to one picture is divided into the blocks, and picture element data is extracted from the thus-divided blocks by a number smaller than the number of picture element data forming the block, and the extracted picture element is stored in units of corresponding blocks. Furthermore, the image information signal composed of a plurality of picture element data corresponding to one picture is divided into the blocks, and a transmission mode for the picture element data forming each of the blocks is determined among a plurality of transmission modes having different numbers of picture element data transmitted, a reading address which corresponds to a block determined to be transmitted in a transmission mode having the greatest number of picture element data transmitted, discrimination data for discriminating an address corresponding to an end portion in each horizontal line direction of a picture from other reading addresses is generated, and stored picture element data is read out so that image information signals can be stably transmitted without any deterioration in the image quality.
摘要:
A color video signal recorder is arranged to record on one and the same recording medium first and second signals which are obtained by frequency dividing at different phases the frequency modulation wave of a frequency modulated color video signal which includes a luminance signal and a carrier chrominance signal.
摘要:
A transmission system, of the type wherein input data to be transmitted is stored in blocks and less than all stored data is extracted from the blocks for transmission and the extracted data is subjected to interpolation to restore all of the data, includes computing circuits for obtaining respective differences between input data and restored data and between input data and stored data and the sums of such differences, and further computing and comparison circuits operating with such differences sums to effect selective transmission of the input data or the extracted data.
摘要:
In an apparatus for recording an information signal on a recording medium forming many parallel tracks on the medium and for reproducing the information signal from the medium, a tracking control system is arranged to record a pilot signal of a given frequency along with the information signal in the first of the many tracks; to have the pilot signal also recorded in second and third tracks adjoining the first track on both sides thereof but at pilot signal phases shifted from the pilot signal phase of the first track to equal degrees in the directions opposite to each other at parts of the second and third tracks aligned perpendicularly to the longitudinal direction of the first track; and, in reproducing the information signal, the position of the recording medium and that of a reproducing head relative to each other are controlled on the basis of the pilot signal of the given frequency reproduced by the reproducing head from the first track along with the information signal.