In a method and apparatus for encoding and decoding data in the residue number system, input binary data are supplied to an encoder to be divided by moduli m.sub.0, m.sub.1, m.sub.2, . . . m (i.e., positive integers having a mutually prime relation). Residue data corresponding to respective moduli are output from the encoder to a digital filter circuit including a plurality of digital filters, each filter corresponding to a respective modulus. Processing for some specified application is perform...

A compact video camera has an image pickup lens system providing a zooming function and a wide angle field of view. The zooming function is performed by a zoom lens, while the wide angle view is achieved via a wide angle converter. The wide angle converter, located closer to the object than the zoom lens, comprises a negative lens, a positive lens, and a reflecting member located between the negative and positive lenses. With the use of the reflecting member, an optical axis of the image pickup ...

A television receiver for providing a non-interlaced display of a received television signal intended for interlaced display includes a cathode ray tube having first and second cathodes, control grids and a fluorescent screen, a circuit for applying a first video signal to the first cathode such that the first cathode emanates a first electron beam in response to the first video signal, a circuit for applying a second video signal to the second cathode such that the second cathode emanates a sec...

Data reproducing apparatus for reproducing data that is recorded with a selected one of at least two different recording densities such that the played back data may exhibit different frequency characteristics, depending upon the recording density. The played back data is supplied to a selected one of plural equalizer circuits whose respective equalizing characteristics match the frequency characteristics of the played back data, thereby reducing the bit error rate of the played back data, regar...

Correlation of a video signal having a chrominance component is detected by combining three successive line intervals of the video signal to produce a first signal by obtaining the sum of the video signals of those three line intervals, combining at least two of those three line intervals to produce a second signal by obtaining the difference between the video signals of such two line intervals; detecting the absolute values of the first and second signals, respectively; and determining the diff...

A sampling frequency converter converts sampled input data having an input sampling frequency into sampled output data having a different output sampling frequency. The relative ratio between input data sample periods and output data sample periods is determined and averaged over a predetermined duration. A filter coefficient generator responds to the averaged input/output sampling period ratio for generating data representing a set of predetermined filter coefficients which are used by a sampli...

In an apparatus for recording data on a magnetic recording medium by means of a magnetic head, a recording current supplied to such head, for example, from a recording amplifier, is varied in accordance with the recording density of the data being recorded so as to reduce the bit error rate upon playback or reproducing of the recorded data. For each recording density, the recording current supplied to the magnetic head is a predetermined amount greater than the optimal value of the recording cur...

A difference between an original digital value of a picture element to be encoded and an original digital value of a spatially adjacent picture element of the picture element is determined by a detecting circuit. The video data of the spatially adjacent picture element is decoded to generate a decoded value by a local decoder. A compressed encoded video data of the picture is generated wherein a difference between a decoded value of the compressed encoded video data and the decoded value is clos...

An automatic cassette loading and reproducing apparatus has main storage bins for storing recorded cassettes for normal use, for example, recorded with regularly scheduled news stories or commercials to be broadcast, auxiliary storage bins for receiving at least one recorded cassette for emergency use, for example, recorded with a late-breaking news story, a cassette transporter for selectively transporting recorded cassettes for normal use and emergency use between the respective storage bins a...

An apparatus for decoding a transmitted signal has a receiver for receiving the transmitted signal, a filter for limiting the frequency of the output of the receiver below a predetermined frequency, a generator for generating a clock signal having a frequency equal to a transmitting rate of the signal output from the receiver, a converter for sampling the output of the filter at a frequency defined by the clock signal and for converting the filter output into a binary signal, and a processor for...