Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1998-01-27
2002-01-29
Garber, Wendy R. (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000, C348S901000
Reexamination Certificate
active
06343179
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a method and an apparatus for recording a TV broadcasting signal (referred to as a TV signal) composed of a video signal and an audio signal, a method and an apparatus for reproducing a TV signal recorded on a recording medium, an apparatus for recording and reproducing a TV signal, and a recording medium for recording a broadcasting program and commercial message composed of a video signal and an audio signal.
2. Description of the Related Art
In the TV broadcasting, in general, the program contains commercial messages inserted therein. Conventionally, there has been known a method for using a sound multiplex mode for detecting the inserted commercial messages. Concretely, an apparatus for recording and reproducing a TV signal has been known which takes the steps of adding a skip start signal and a skip end signal to a start point and an end point of an interval detected as a commercial message and skipping the commercial message interval when reproducing the TV broadcasting signal.
For example, consider the case that the main program is broadcast in dual languages. If the main program contains a commercial message inserted therein, since the commercial message is normally broadcast in a stereophonic manner, the sound multiplex mode is switched from a dual language mode into a stereo mode. Hence, if the main program is broadcast not in a stereophonic manner but in a monophonic manner or in a dual language mode, the interval when the sound multiplex mode is switched into a stereophonic mode is determined as a commercial message interval.
FIG. 1
is a block diagram showing a conventional apparatus
40
for recording and reproducing a TV signal. This recording and reproducing apparatus
40
provides a function of cutting a commercial message which function is executed to detect a stereophonic interval as a commercial message interval and skip the commercial message interval when reproducing the TV signal. This apparatus
40
is a video tape recorder (VTR) provided with a magnetic tape as a recording medium.
A RF signal is inputted at an antenna
41
and then is supplied to a tuner
42
. Then, this tuner
42
operates to extract a pilot signal of the sound multiplex mode. The pilot signal is supplied to the sound multiplex decoder
43
. The sound multiplex decoder
43
operates to decode and determine the sound multiplex mode and send the result to a timer microcomputer
44
.
The timer microcomputer
44
takes an AND of the result of the inputted sound multiplex mode and an output of a commercial message (simply referred to as CM) cut switch
45
manually controlled by a user to switch on and off the CM cutting function and then sends the AND to a main microcomputer
47
. That is, in a case that the main program is determined in advance to be broadcast in dual language mode or a monophonic manner, if the CM cutting switch
45
is operated by the user, the timer microcomputer
44
enables to notify the main microcomputer
47
of the fact that the CM is detected when the sound multiplex decoder
43
outputs a stereophonic signal. A light-emitting diode
46
connected to the timer microcomputer
44
is lit up when the CM is detected so that the user can get to know the CM determined result.
The main microcomputer
47
operates to control a recording system control circuit
48
based on the CM determined result and then actuate the circuit
48
to record a video signal, an audio signal and a CM skip signal on a recording medium
49
. The CM skip signal is composed of a skip start signal indicating a start point of a CM interval and a skip end signal indicating an end point of the CM interval.
On the other hand, in a reproducing system, a reproducing system control circuit
50
controlled by the main microcomputer
47
operates to read out a video signal, an audio signal and a CM skip signal from the recording medium
49
and then input them to the main microcomputer
47
. If the CM skip signal is the skip start signal, the main microcomputer
47
disables to output the video signal and the audio signal to a signal processing circuit
51
until the skip end signal comes to the main microcomputer
47
. It means that the video signal and the audio signal are allowed to be inputted to the signal processing circuit
51
only except the CM interval and then are fed out of the signal output circuit
52
.
By the way, the apparatus for recording and reproducing a TV signal is arranged to record a skip start signal and a skip end signal on a start point and an end point of the interval detected as a CM and decode the skip start signal and the skip end signal when reproducing the TV signal so that all CMs contained in the main program are allowed to be deleted. Hence, this apparatus disables to correspond to the case that a TV watcher would like to watch a necessary number of CMs, for example, one CM or a given genre of CMs.
SUMMARY OF THE INVENTION
The present invention is made in consideration of the aforementioned conditions, and it is an object of the present invention to provide a method and an apparatus for recording a TV signal which method and apparatus are arranged to allow a reproducing apparatus side to efficiently reproduce the TV signal without having to display the same CM on the reproducing apparatus twice or more times.
It is a further object of the present invention to provide a method and an apparatus for reproducing a TV signal which method and apparatus are arranged to efficiently reproduce the TV signal without having to show the same CM to a user twice or more times and to realize the reproduction of a program with one or more proper CMs being cut, with the same CM being cut, or with only the special genre of CM specified by the user being reproduced.
It is another object of the present invention to provide a recording medium which allows the TV signal recorded thereon to be efficiently reproduced on the reproducing apparatus without having to show the same CM to the user twice or more times.
In carrying out the foregoing objects in a preferred mode, the apparatus for recording a TV signal according to the present invention is arranged to have means for detecting a CM for detecting if the received content is a CM, means for detecting CM information accompanied with the CM, and means for recording a signal for recording the CM information on a recording medium together with a video signal and an audio signal.
The method for recording a TV signal according to the present invention is arranged to detect if the received content of the TV signal is a CM and record CM information accompanied with the detected CM on a recording medium together with the video signal and the audio signal.
The apparatus for reproducing a TV signal according to the present invention is arranged to have means for separating a signal for separately extracting CM information recorded on a recording medium and means for controlling reproduction for controlling a reproducing state of the video signal and the audio signal according to the content of the CM information.
The method for reproducing a TV signal according to the present invention is arranged to separate the CM information accompanied with the CM recorded on a recording medium and control the reproducing information of the video signal and the audio signal according to the content of the CM information.
The apparatus for recording and reproducing a TV signal according to the present invention is arranged to have means for detecting a CM for detecting if the received content is a CM, means for detecting CM information for detecting the CM information accompanied with the CM, means for recording a signal for recording the CM information on a recording medium together with the video signal and the audio signal, means for separating a signal for separately extracting the CM information recorded on the recording medium, and means for controlling reproduction for controlling the reproducing state of the video signal and the audio signal according to the content of
Akiba Toshiya
Arai Naohisa
Murabayashi Noboru
Ohta Masashi
Suito Taro
Frommer William S.
Frommer & Lawrence & Haug LLP
Garber Wendy R.
Onuaku Christopher
Smid Dennis M.
LandOfFree
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