Abstract: The invention relates to an information distributing system for distributing data to at least one information processing terminal device from an information center storing data. The information distributing system of the invention is structured such that character data, audio data, and both the character data and the audio data are selectively downloaded from the information center to the information processing terminal device on the basis of request information from the information processing terminal device, so that a user makes selection according to a congested state of communication, and effective information collection becomes possible.

Abstract: The invention relates to an information distributing system for distributing data to at least one information processing terminal device from an information center storing data. The information distributing system of the invention is structured such that character data, audio data, and both the character data and the audio data are selectively downloaded from the information center to the information processing terminal device on the basis of request information from the information processing terminal device, so that a user makes selection according to a congested state of communication, and effective information collection becomes possible.

Abstract: The invention relates to an information distributing system for distributing data to at least one information processing terminal device from an information center storing data. The information distributing system of the invention is structured such that character data, audio data, and both the character data and the audio data are selectively downloaded from the information center to the information processing terminal device on the basis of request information from the information processing terminal device, so that a user makes selection according to a congested state of communication, and effective information collection becomes possible.

Abstract: An information distributing system for distributing data to at least one information processing terminal device from an information center storing data. The information distributing system is structured such that character data, audio data, and both the character data and the audio data are selectively downloaded from the information center to the information processing terminal device on the basis of request information from the information processing terminal device, so that a user has multiple options for information selection and effective information collection becomes possible.

Abstract: The invention relates to an information distributing system for distributing data to at least one information processing terminal device from an information center storing data. The information distributing system of the invention is structured such that character data, audio data, and both the character data and the audio data are selectively downloaded from the information center to the information processing terminal device on the basis of request information from the information processing terminal device, so that a user makes selection according to a congested state of communication, and effective information collection becomes possible.

Abstract: A picture signal processing method and apparatus in which the block distortion as well as the mosquito noise produced on encoding/decoding a picture is to be suppressed. The picture signal processing apparatus includes a filter for filtering a picture, an encoder 5 for block-encoding the picture, a decoder 13 for decoding an encoded picture from the encoder 5 and a noise reducing unit 14 for reducing at least the block distortion of a picture decoded by the decoding unit 13 to reduce the noise otherwise produced on encoding/decoding the picture.

Abstract: A picture signal processing method and apparatus in which the block distortion as well as the mosquito noise produced on encoding/decoding a picture is to be suppressed. The picture signal processing apparatus includes a filter for filtering a picture, an encoder 5 for block-encoding the picture, a decoder 13 for decoding an encoded picture from the encoder 5 and a noise reducing unit 14 for reducing at least the block distortion of a picture decoded by the decoding unit 13 to reduce the noise otherwise produced on encoding/decoding the picture.

Abstract: A picture signal processing method and apparatus in which the block distortion as well as the mosquito noise produced on encoding/decoding a picture is to be suppressed. The picture signal processing apparatus includes a filter for filtering a picture, an encoder 5 for block-encoding the picture, a decoder 13 for decoding an encoded picture from the encoder 5 and a noise reducing unit 14 for reducing at least the block distortion of a picture decoded by the decoding unit 13 to reduce the noise otherwise produced on encoding/decoding the picture.

Abstract: A plurality of CCD image pickup devices are provided. When the multiplex exposure is executed, the exposure timings of the plurality of image pickup devices are set to different timings. The output signals of the plurality of image pickup devices of different timings are synchronized and synthesized, thereby forming a multiplexed signal.

Abstract: Apparatus for recording and reproducing an information signal comprising at least an analog audio signal in a plurality of successive tracks on a magnetic tape includes a PCM processing circuit for converting an analog audio signal into a PCM audio signal; a video signal processing circuit for processing a video signal to produce an output video signal; a rotary magnetic head assembly for recording the output video signal and the PCM audio signal in the plurality of successive tracks on the tape; a switch assembly for supplying the output video signal and the PCM audio signal to the rotary magnetic head assembly; and a control circuit for controlling the switch assembly to supply the output video signal and the PCM audio signal to the rotary magnetic head assembly during a video use mode so that the latter records the output video signal in a main section of each track and to supply only the PCM audio signal to the rotary magnetic head assembly during an audio use mode so that the latter records the PCM audio

Abstract: Color video still picture playback apparatus enhances the quality of a color still picture reproduced from a video record medium. The reproduced signal is formatted as one field of video containing a succession of lines with first and second color difference signals provided in alternating line sequence. The reproduced picture, after processing, is formatted as alternating first and second fields, each having a plurality of lines such that the lines of the second field are interpolated between successive lines of the first field, and the color difference signals are provided as continuous signals, with interpolated signals being provided in alternate lines. To achieve this, first and second switches operated at the field rate are associated with first and second delay lines of one-half-line and one line delay times, respectively, and an adder circuit connects the outputs of the delay lines to one input of the second switch.

Abstract: In a video signal reproducing apparatus for converting a first video signal having a first field frequency to a second video signal having a second field frequency, there are provided a tape scanning device which is made movable in a direction perpendicular to the recording track on a tape, a system for controlling the speed of the scanning device, a system for shifting the scanning device in the aforesaid direction according to the difference between the first and second field frequencies, in order to skip or repeat selected fields so that the video signal is reproduced with the second field frequency. Also provided is a system for converting the number of lines contained in one field of the first video signal.

Abstract: In a recording and reproducing apparatus in which a video signal is recorded by at least one rotary head in successive parallel tracks on a recording medium while the latter is being driven at a predetermined or standard speed in a direction to which said tracks are skewed, and in which the recorded video signal is reproduced by the rotary head repeatedly scanning the recording medium while the latter is selectively driven at the standard speed, as in the normal reproducing mode, or at an arbitrary speed other than such standard speed, for example, at zero speed for the still-motion reproducing mode, or at speeds less than and greater than the standard speed for the slow-motion and quick-motion reproducing modes, respectively; a variable delay circuit is operative during reproducing with the recording medium being driven at an arbitrary speed other than standard speed for variably delaying the video signal reproduced by said rotary head, and a control circuit controls the amounts by which the variable delay c

Abstract: Apparatus for controlling the scanning path of a rotary transducer which is used in a signal reproducing system of the type having at least one rotary transducer which scans across a movable record medium to reproduce, during each pass of the transducer, signals which are recorded in parallel record tracks, the apparatus being particularly useful when the record medium is moved either at a faster-than-normal or slower-than-normal speed so that the transducer scans plural record tracks during each pass thereof. A control signal generator produces a periodic tracking control signal which is synchronized with the speed at which the record medium is moved, the periodic control signal having a plurality of periods during each pass of the transducer.

Abstract: A method of and apparatus for modifying a video signal such that a video picture can be reproduced by a video display device in response to the modified video signal, but if the modified video signal is transmitted and then recorded on a video signal recorder, a satisfactory video picture cannot be reproduced if that recorded modified video signal subsequently is played back. A pulse whose amplitude is substantially equal to the peak white level of the video signal is inserted into respective horizontal blanking intervals of the video signal. If this modified video signal is recorded on a conventional type of video signal recorder, the presence of the inserted pulse signal is detected by an automatic gain control (AGC) detector which, in turn, controls an AGC amplifier to substantially attenuate the modified video signal which then is recorded.

Abstract: Tracking control apparatus for a signal reproducing system of the type wherein at least one transducer scans successive parallel tracks on a record medium in which information signals, such as video signals, are recorded. The transducer preferably is of the rotary type so that, during its orbit, it is brought into and then out of reproducing relation with respect to the record medium. Any deviation between the scanning trace of the transducer across the medium and a given track which is being scanned is detected, and a control signal is produced as a function of this detected deviation. The transducer is supported by an adjustable support which is responsive to the control signal so as to displace the transducer transversely of the given track by an amount determined by the control signal. A predetermined sample of the control signal is produced while the transducer scans the given track, and this predetermined sample is stored.

Abstract: A video signal reproducing system having a magnetic head deflector for automatic head scan tracking, the deflector being displaced corresponding to an error signal obtained from crosstalk pilot signals in a reproduced video signal.

Abstract: A method and apparatus for correcting tracking errors of a transducer which scans successive, parallel, adjacent record tracks of a record medium so as to reproduce information signals therefrom. The information signals, which may comprise video signals, are recorded in the parallel record tracks, and predetermined signals also are recorded at predetermined locations in the information signals. When the information and predetermined signals are played back, at least one cross-talk predetermined signal which is recorded in at least one adjacent track also is played back. The cross-talk predetermined signal is detected and a control signal is produced in response to the level of the detected cross-talk predetermined signal. The position of the transducer with respect to the track being scanned thereby is adjusted in accordance with the control signal.

Abstract: A system for reproducing video signals recorded on a magnetic recording medium as a suppressed-carrier modulated signal in which the video information is carried primarily on only one sideband and the frequency of the suppressed carrier is within the band occupied by the video signals prior to modulation. Jitter components in the reproduced signals are substantially cancelled out.

Abstract: A color cathode ray tube preferably of the single gun, plural beam type wherein the beams originate on a horizontal or vertical straight line and are directed into a field produced by a horizontal-vertical electromagnetic deflection yoke at predetermined incident angles to each other so as to converge at a color screen, is provided with a magnetic yoke, for example, secured to the electron beam convergence plates at the end of the electron gun so as to be disposed in the path of the leakage flux produced by the horizontal-vertical electromagnetic deflection yoke, and thereby impart a further vertical or horizontal deflection field to at least one of the plural beams for correcting a deviation between the positions of rasters on the color screen produced by the plural beams.