System for automatically controlling the tuning of television receiver receiving channels
First Claim
1. A video receiving device including a circuit for receiving first video signals, a circuit for receiving second video signals from another video receiver, a circuit for automatic searching for transmission channels, and a circuit for comparing a phase between the vertical synchronization signals of said first video signals and the vertical synchronization signals of said second video signals and providing an "outphasing" signal used for controlling the operation of said automatic channel search circuit based upon the comparison, wherein said video receiving device also includes a control circuit for enabling the first video signals to be displayed for a predetermined time on said another video receiver.
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Abstract
A video receiving device (A) that includes a circuit for receiving first video signals from a remote transmitter, a circuit for receiving second video signals from another video receiver (TVS), a circuit (TU1) for automatic searching for transmission channels, and a circuit (PC) for phase comparison between the vertical synchronization signals of the first video signals and the vertical synchronization signals of the second video signals that can output an "outphasing" signal that is used for controlling the operation of the automatic channel search circuit, wherein the video receiving device (A) also includes a control circuit (CC) that enables the video signals that it is receiving to be displayed for a pre-determined time on the other video receiver (TVS). The invention is applicable notably to the programming of video recorders, and to the automatic tuning of such a recorder to the channel being viewed on a TV receiver in order to enable simple and immediate recording of this channel.
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6 Claims
- 1. A video receiving device including a circuit for receiving first video signals, a circuit for receiving second video signals from another video receiver, a circuit for automatic searching for transmission channels, and a circuit for comparing a phase between the vertical synchronization signals of said first video signals and the vertical synchronization signals of said second video signals and providing an "outphasing" signal used for controlling the operation of said automatic channel search circuit based upon the comparison, wherein said video receiving device also includes a control circuit for enabling the first video signals to be displayed for a predetermined time on said another video receiver.
Specification