According to one aspect of this invention, auxiliary data recorded on a recording medium together with image and/or sound data is reproduced by a plurality of times, and if the auxiliary data reproduced from a predetermined range on the recording medium coincide with each other, it is determined that the auxiliary data reproduced from the predetermined range is true auxiliary data which can be utilized. According to another aspect of the invention, auxiliary data recorded in different areas on a...

A continuous and automatic xerographic reproducing machine operable in any of several modes. The machine is adapted to create copy on sheet material of either of two sizes. A sheet-conveying assembly then selectively directs the copy through the machine to an enlarged catch tray at a first output end remote from the sheet input end. In the alternative, the sheet material may be conveyed along an alternate path to a smaller catch tray at a second output end on a side of the machine remote from th...

A signal of a run-length-limited code is reproduced from a recording medium. The reproduced signal is sampled to generate a sampling-resultant signal. An odd-sample signal and an even-sample signal are generated in response to the sampling-resultant signal. A first transversal filter subjects the odd-sample signal to first partial-response waveform equalization to generate an equalization-resultant odd-sample signal. The first partial-response waveform equalization depends on first tap coefficie...

A signal is reproduced from a recording medium. The reproduced signal is sampled in response to a clock signal to get a sampling-resultant signal. A transversal filter includes a delay line having taps and delaying the sampling-resultant signal, multipliers for multiplying only alternate ones among signals appearing at the taps by tap coefficients to get multiplication results, and an adder for adding the multiplication results into a filtering-resultant signal. A temporary decision device opera...

For a plurality of digital video signals whose frame frequencies are different, a pixel number converting circuit to convert the number of pixels is provided so that differences of the frame frequencies are replaced to differences of the numbers of pixels and a plurality of digital video signals whose frame frequencies are different can be processed by a common clock frequency. The frame frequency is detected by a frame frequency value decoder and the number of pixels in the horizontal direction...

A reproducing apparatus includes a storage unit having a plurality of content data stored therein, a reproducing unit reading out the content data stored in the storage unit and reproducing the read content data, and a driving unit driving a predetermined driven unit according to the content of the content data reproduced in the reproducing step. The reproducing unit has two reproduction modes, that is, a normal reproduction mode in which the content data stored in the storage unit are reproduce...

A reproducing apparatus for information signals recorded on a record carrier in the form of a tape comprises two rotatable reproducing heads for alternately reproducing the information signals and a position encoder which supplies position pulses for determining the rotary position of the reproducing heads. A common pre-amplifier is connected to the reproducing heads, which amplifier is followed by compensation circuits associated with the two reproducing heads for signal correction, the output ...

A copying machine includes an optical sensor of the line scanning type for converting an image into electrical signals, and a thermal recording head controlled in accordance with the image signals. The platen moves with respect to the read unit and the read unit will read in both forward and reverse directions of the platen, and the magnification value can be varied. The total width of energized heating elements and the movement length and speed of the platen may be controlled in accordance with...

A reproducing apparatus for reproducing digital data from a recording medium, the digital data including information data and ID data of the information data. The reproducing apparatus checks the reliability of currently reproduced ID data by using the current ID data and ID data reproduced before the current ID data, and corrects an error in the reproduced information data in accordance with the reliability check result.

An apparatus for reproducing video data recorded on a tape-shaped recording medium in one of a first recording mode in which the video data is recorded while the tape-shaped recording medium is transported at a first speed and a second recording mode in which the video data is recorded while the tape-shaped recording medium is transported at a second speed different from the first speed, is arranged to reproduce the video data, in the case of a slow reproduction mode, while transporting the tape...