Matsushita Electric Industrial Co., Ltd.

Takayasu Yoshida

Hideki Otaka

Shinya Tanaka

Yukio Nakagawa

Kazuma Morishige

Hidefumi Muraoka

Chiyoko Matsumi

Akira Iketani

Susumu Yamaguchi

Hideyo Shibata

Shigeo Eshima

Susumu Ikeda

Seigo Fujiwara

Shinichi Togawa

Ritsuro Kinoshita

A digital data transmission apparatus and a transmission method thereof in accordance with the present invention includes a reproduction section for reproducing digital data of n (n is an integer of 2 or more) channels from a recording medium, a multiplexing section for dividing one frame in a television signal into n transmission areas on a line-by-line basis, and multiplexing digital data of the n channels reproduced by the reproduction section on the n corresponding transmission areas on the line-by-line basis, and a transmitting section for transmitting data multiplexed by the multiplexing section.

Digital data transmission apparatus and method for multiplexing multiplexing multi-channel video data within active video periods

A digital data transmission apparatus and a transmission method thereof in accordance with the present invention includes a reproduction section reproducing digital data of at least one channel from a recording medium, a multiplexing section for dividing one frame in a television signal into n transmission areas on a line-by-line basis, and a transmitting section for transmitting data multiplexed by the multiplexing section.

Digital data transmission apparatus and method for multiplexing different rate digital data within active video periods of a television signal

The receiver and transmitter/receiver in accordance with the present invention comprises a common input terminal for inputting digital data including uncompressed video data or compressed video data, a receiving circuit for carrying out serial-parallel conversion processing for the digital data from the above-mentioned common input terminal and for carrying output, an SDI decoder and an SDTI decoder for inputting data from the above-mentioned receiving circuit and for taking out the digital data including the uncompressed video data and compressed video data, respectively, a distinguishing circuit for distinguishing the transmission format of the input digital data and the presence or absence of the compression of the video data, and a selection switch for selecting data from the SDI decoder or the SDTI decoder on the basis of the result of the distinguishing of the distinguishing circuit.

Receiver and transmitter-receiver

Recording apparatus, reproducing apparatus, and conversion apparatus

Digital signal recording/reproducing device with editor

In a magnetic recording and reproducing apparatus for reproducing a video signal recorded on a video track of a magnetic tape by pair of magnetic heads arranged in a rotation drum so as to oppose to each other at an angle of 180 degrees, while rotating a capstan for moving the magnetic tape in the longitudinal direction, a memory controller controls the reproduced video signal to be written into and be read out from two memories, each of which stores a video signal of at least one field. Then, a quality of image judgment circuit judges a part of the reproduced video signal having a quality of image higher than a predetermined threshold quality level, among a plurality of parts of the reproduced video signal obtained through scan of a pair of magnetic heads. In a slow-motion reproduction, the memory control circuit controls the part of the reproduced video signal having the higher quality of image to be written into one of the two memories, whereas the memory control circuit simultaneously controls a further reproduced video signal to be read out from another one of the two memories.

Magnetic recording and reproducing apparatus for performing slow-motion

An apparatus for recording and reproducing a video signal has a recording portion and a reproducing portion. The recording portion has an analog-to-digital converter for converting analog video signal to digital video signal, a wave form data extraction circuit for extracting digital wave form data expressed in 8-bit detail and carried in a vertical blanking period of the video signal, and a converter for converting the digital wave form data to a quantized wave form data expressed in 2-bit detail. The video signal is recorded on a tape together with the quantized wave form data. The reproducing portion has a wave form data selector for selecting the quantized wave form data, a counter converter for converting the 2-bit quantized wave form data to the original digital wave form data of 8-bit detail, and an adder for adding the digital wave form data in a vertical blanking period of the video signal.

Apparatus for recording and reproducing a video signal using a digital

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Osaka, Japan

Takayasu Yoshida