Sound and image reproduction system
AssigneeSanyo Electric Co., Ltd.
InventorYuji Yamamoto
Life of this patent
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Abstract
Based on a series of video data for producing one or a plurality of text displaying images and a series of accompaniment MIDI data, a signal processing circuit (1) prepares a quasi video signal containing the two kinds of data as arranged in alternating fields or in alternating pluralities of fields in time series and identification data for identifying the series of video data and MIDI data. The quasi video signal is transmitted to terminal units (5) for users via a CATV or like transmission path. The terminal unit extracts from the quasi video signal fields of MIDI data and video data containing identification data specifying a piece of music selected by the user, and reproduces the accompaniment of the selected piece and displays the text thereof based on the extracted data.
Claims4
A sound and image reproduction system characterized in that the system comprises a signal transmitter and signal receiver,
- the signal transmitter comprising:
- signal processing means which, based on a series of video data for producing one or a plurality of images and MIDI data for producing a series of sounds corresponding to the video data, prepares a quasi video signal containing the two kinds of data as arranged in alternating fields or in alternating pluralities of fields in time series and which adds to the quasi video signal identification data for distinguishing the series of video data and MIDI data from other series of video data and MIDI data, and
- signal transmitting means for transmitting the quasi video signal to the signal receiver,
- the signal receiver comprising:
- signal receiving means for receiving the quasi video signal from the signal transmitter, and
- a plurality of terminal units for reproducing desired sounds and images from the quasi video signal received, each of the terminal units comprising:
- selection means for preparing said identification data for specifying the sounds and images to be reproduced,
- signal processing means for extracting from the received quasi video signal the series of video data and MIDI data containing the selection signal prepared by the selection means,
- sound emitting means for outputting the MIDI data extracted by the signal processing means, and
- display means for outputting the video data extracted by the signal processing means.
Dependencies are inferred from the claim text.