Apparatus and method for recording/playing back broadcasting signal
First Claim
1. An apparatus for recording/playing back a broadcasting signal, comprising:
- key input means for providing a function key signal selected by the user, the function key signal being provided to a control means;
memory means for storing video signals, audio signals, or both;
video/audio signal separation means, receiving the broadcasting signal, for separating a video signal and an audio signal from the received broadcasting signal;
video signal processing means for writing the video signal from said video/audio signal separation means into said memory means and for reading the written video signal from said memory means;
audio signal processing means for writing the audio signal from said video/audio signal separation means into said memory means and for reading the written audio signal from said memory means;
selection means for selectively outputting the broadcasting signal, an output video signal from said video signal processing means, and an output audio signal from said audio signal processing means;
timing generation means, under control of said control means, for controlling said memory means to store video signals, audio signals or both during a predetermined time interval and for controlling said video signal processing means and said audio signal processing means to play back the video signals, audio signals, or both, output therefrom at various reproducing speeds; and
said control means for waiting a predetermined amount of time after receiving a predetermined function key signal before issuing a stop command to said timing control means, the stop command controlling said timing control means to stop storing video signals into said memory means such that said memory means stores video and audio signals for the predetermined time interval including the predetermined amount of time after the function key signal is applied to said control means, and for controlling said timing generation means and said selection means in response to selected function key signals to play back at the various reproducing speeds the video signal stored in said memory means during the predetermined time interval both before and after the predetermined function key signal was applied, and read out by said video signal processing means, and the audio signal stored in said memory means during the predetermined time interval both before and after the predetermined function key signal was applied, and read out by said audio signal processing means.
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Accused Products
Abstract
An apparatus and a method for recording/playing back a broadcasting signal wherein the broadcasting signal is separated into a video signal and an audio signal and then written into video and audio signal memories. The video and audio signals are read from the video and audio signal memories if a HISTORY mode key is ON. The operation is ended if a REVIEW key is OFF under the condition that the HISTORY mode key is off. If the REVIEW key is ON the write operation of the video signal into the video signal memory is stopped and it is discriminated whether a JOG key is ON or OFF. A video signalportion of a predetermined previous interval is read from the video signal memory if it is discriminated that the JOG key is OFF. If the JOG key is ON, a read timing signal is generated to read the video signal from the video signal memory according to an operation of the JOG key. The video signal is read from the video signal memory with an address being incremented, if it is discriminated that the JOG key is operated clockwise. If it is discriminated that the JOG key is operated counter-clockwise, the video signal is read from the video signal memory with the address being decremented.
69 Citations
21 Claims
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1. An apparatus for recording/playing back a broadcasting signal, comprising:
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key input means for providing a function key signal selected by the user, the function key signal being provided to a control means; memory means for storing video signals, audio signals, or both; video/audio signal separation means, receiving the broadcasting signal, for separating a video signal and an audio signal from the received broadcasting signal; video signal processing means for writing the video signal from said video/audio signal separation means into said memory means and for reading the written video signal from said memory means; audio signal processing means for writing the audio signal from said video/audio signal separation means into said memory means and for reading the written audio signal from said memory means; selection means for selectively outputting the broadcasting signal, an output video signal from said video signal processing means, and an output audio signal from said audio signal processing means; timing generation means, under control of said control means, for controlling said memory means to store video signals, audio signals or both during a predetermined time interval and for controlling said video signal processing means and said audio signal processing means to play back the video signals, audio signals, or both, output therefrom at various reproducing speeds; and said control means for waiting a predetermined amount of time after receiving a predetermined function key signal before issuing a stop command to said timing control means, the stop command controlling said timing control means to stop storing video signals into said memory means such that said memory means stores video and audio signals for the predetermined time interval including the predetermined amount of time after the function key signal is applied to said control means, and for controlling said timing generation means and said selection means in response to selected function key signals to play back at the various reproducing speeds the video signal stored in said memory means during the predetermined time interval both before and after the predetermined function key signal was applied, and read out by said video signal processing means, and the audio signal stored in said memory means during the predetermined time interval both before and after the predetermined function key signal was applied, and read out by said audio signal processing means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of recording/playing back a broadcasting signal, comprising the steps of:
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(a) separating a video signal and an audio signal from the broadcasting signal and writing the separated video and audio signals into memory; (b) discriminating whether a HISTORY mode key is ON or OFF and reading the video and audio signals from the memory if it is discriminated that the HISTORY mode key is ON, wherein the read video and audio signals correspond to a predetermined time period including time before and a predetermined amount of time after the HISTORY mode key is discriminated as being on; (c) discriminating whether a REVIEW key is ON or OFF, if it is discriminated that said HISTORY mode key is OFF, and ending the operation if it is discriminated that the REVIEW key is OFF; (d) stopping the write operation of the video signal into the memory and discriminating whether a JOG key is ON or OFF, if it is discriminated that the REVIEW key is ON, and reading a video signal portion of a predetermined previous interval from the memory if it is discriminated that the JOE key is OFF; (e) generating a read timing signal to read the video signal from the memory according to an operation of said JOG key, if it is discriminated that said JOE key is ON; (f) discriminating whether said JOG key is operated in a first mode or a second mode, reading the video signal from the memory with an address being incremented if it is discriminated that said JOG key is operated in the first mode and reading the video signal from the memory with the address being decremented if it is discriminated that said JOG key is operated in the second mode; and (g) compressing the video and audio signals before being written into the memory and expanding the video and audio signals after being read from the memory. - View Dependent Claims (8, 9, 10, 11)
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12. A method for recording/reproducing an audio/video signal, comprising the steps of:
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(a) receiving the audio/video signal and continuously storing the received audio signal, video signal or both, and discarding oldest stored audio and video signals such that a predetermined time interval'"'"'s worth of audio and video signals remain stored; (b) determining whether or not a predetermined key input signal is received by a controller; (c) if the predetermined key input signal is received, then waiting a predetermined time period before issuing a stop storing command such that step (a) continues for the predetermined time period after the predetermined key input signal is received by the controller, the time interval starting before and ending the predetermined amount of time after the key input signal is determined in said step (b) to be received. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification