JPH0281344A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the commercial cut at the time of picture recording, to attain the skip-watching at the time of reproduction and to attain the corresponding to a broadcasting time change by detecting the information immediately before and immediately after a commercial signal and the titles and so forth of the change of the frequency distribution of an ordinary broadcasting and a commercial picture and the change of a program broadcasting time and judging them. CONSTITUTION:The change (frequency characteristic, switching of a sound multiple signal, sound level, displaying of titles and the like) of a picture recording or a reproducing signal is detected and judged by a judging part (control device 2). Based on the judged result, the action mode of an ordinary magnetic recording and reproducing device is controlled by using a remote control signal (remote control signal). Thus, without needing the transmission of a control signal such as a special code from a broadcasting station side, the correspondence to the cut and skip-watching of the commercial and the change of the broadcasting time can be carried out with a current broadcasting system and the ordinary magnetic recording and reproducing device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording and reproducing device, and more particularly to a recording and reproducing device whose operation can be switched according to changes in recording or reproduction signals.

[Conventional technology]

As a method to automatically respond to broadcast time changes and cut commercials when recording with a magnetic recording and reproducing device,
As described in Japanese Unexamined Patent Publication No. 62-257651, the broadcasting station transmits a program-specific code, and the magnetic recording/reproducing device receives this code and performs the desired processing. be.

[Problem to be solved by the invention]

The above-mentioned conventional technology has a problem in that it is difficult to handle changes in broadcast time and cut commercials with current broadcast receiving systems and magnetic recording/reproducing devices.

The present invention solves the problems of the prior art described above, and uses a current broadcast receiving system and a normal magnetic recording and reproducing device to cope with the above-mentioned changes in broadcast time and cut commercials. The purpose is to provide

[Means to solve the problem]

The above purpose is to change the recording or playback signal (frequency characteristics,
Audio multiplex signal switching, audio level.

This is achieved by configuring the device to detect and judge the display of subtitles (subtitle display, etc.) and, based on the judgment result, to control the operating mode of the normal magnetic recording reproducing device using a remote control signal. be done.

[Effect]

By detecting and determining information immediately before and after commercial signals, changes in the frequency distribution of normal broadcasts and commercial screens, subtitles for changes in program broadcast time, etc.
It is possible to cut commercials during recording, skip viewing during playback, and respond to broadcast time changes. Furthermore, by converting the above determination result into a remote control signal and transmitting it to a conventional magnetic recording/reproducing device, the above desired objective can be achieved with the current system.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a first embodiment of a recording/reproducing device according to the present invention, in which 1 indicates a magnetic recording/reproducing device;
2 is a control device that controls the operation of the magnetic recording and reproducing device 1;
4 is a magnetic tape, 4 is a cassette, 5 is a magnetic head that performs recording and reproduction on the magnetic tape 4, 6 is a cylinder on which the magnetic head 5 is mounted, 7 is a remote control receiving unit that receives control signals from the control unit @2, 8 9 is a mode control unit that switches the mode of the magnetic recording/reproducing apparatus 1 based on the control signal received by the remote control receiving unit 7; 9 is a running control unit that controls the running of the magnetic tape 4 according to the operation of the mode control unit 8; 10 is a magnetic a video signal processing unit that processes the signal reproduced by the head 5, 11
is a tuner section that receives broadcast signals; 12 is a tuner section 1;
a broadcast signal processing unit 13 that processes the broadcast signal received in 1;
14 is an input changeover switch that switches the input signal to the frequency analysis section; 14 is a frequency analysis section that analyzes the frequency characteristics of the video or audio signal; 15 is a memory that holds the analysis results of the frequency analysis section 14; 16 is the frequency analysis section 14 an output changeover switch for changing the output light of the analysis results; 17;
18 is a comparison unit that compares the previous analysis result held in the memory 15 with the current analysis result; 18 is a system control unit that determines the necessary operation of the magnetic recording reproducing apparatus 1 based on the comparison result of the comparison unit 17; Reference numeral 19 denotes a remote control transmitter that transmits the determination result of the system controller 18 as a control signal to the magnetic recording/reproducing apparatus 1.

In the figure, a control device 2 and a magnetic recording/reproducing device 1 are
They are connected by connectors 1-a and 2-b.

When the magnetic recording/reproducing device 1 is in the recording mode, the input selector switch 13 is connected to the tuner side (13-a), and the frequency analysis section 14 analyzes the frequency of the received broadcast image or audio signal. , the output selector switch 1G is switched to the memory 15 side (16-a), and the analysis results are held in the memory 15.

Next, the output selector switch 16 is moved to the comparing section 17 side (16
-b) and performs frequency analysis on the current image or audio signal.

When the broadcast content switches to a commercial or the like, the frequency distribution of the image or audio signal also changes, so the comparison unit 17 detects a change in the broadcast content. Comparison part 1
Based on the determination result in step 7, the system control unit 18 decides to control the magnetic recording/reproducing device 1 to pause or cancel the pause during recording, and sends the decision to the remote control unit 19. A control signal is transmitted from the remote control transmitting section 19 to the remote control receiving section 7 of the magnetic recording and reproducing apparatus 1, and the magnetic recording and reproducing apparatus 1 performs a predetermined operation.

Further, when the magnetic recording reproducing apparatus 1 is in the reproduction mode, the input selector switch 13 is set to the video signal processing section 10 side (13
-b), and performs frequency analysis of the image or audio signal reproduced by the magnetic recording and reproducing apparatus 1. and,
By detecting a change to a commercial or the like during playback and changing the operation of the magnetic recording/reproducing device 1 to fast forward or the like, it becomes possible to skip the commercial or the like.

FIG. 2 is a block diagram showing a second embodiment of the recording and reproducing apparatus according to the present invention, in which the same parts as in FIG. The image processing section 21 is a pattern data holding section that holds text and image patterns such as commercials and program time changes.

In the same figure, the input changeover switch 13 is placed on the tuner side (13-a) when the magnetic recording/reproducing device 1 is in the recording mode, and on the video signal processing unit 10 side when the magnetic recording/reproducing device 1 is in the playback mode, as in FIG. (13-b).

Then, the image processing unit 20 processes the image signal being recorded or played back, and extracts character patterns for commercial titles and program time changes.

This processing result is compared with the data in the pattern data holding section 21, and the magnetic recording/reproducing apparatus 1 is switched to a desired mode based on the comparison result. As in FIG. 1, the control signal is transmitted from the remote control transmitter 19, received by the remote control receiver 7 of the magnetic recording reproducing apparatus 1, and a predetermined operation is performed.

Furthermore, in this embodiment, character patterns such as "Following programs will be broadcast 30 minutes later" that are displayed when the time of a program is changed are detected and linked to a recording reservation timer (not shown). This also makes it possible to automatically deal with changes in program broadcast times.

FIG. 3 is a block diagram showing a third embodiment of the recording and reproducing apparatus according to the present invention, in which the same parts as in FIGS. This is a subtitle detection unit that detects subtitles. In the figure, an image processing section 20 processes an image signal being recorded or played back, and a subtitle detection section 2
In step 2, subtitles displayed immediately before a commercial are detected, and the commercial is cut or skipped.

Compared to the embodiments shown in FIGS. 1 and 2, this embodiment does not need to hold memory or pattern data, so it can be made simpler and lower in price.

FIG. 4 is a block diagram showing a fourth embodiment of the recording and reproducing apparatus according to the present invention, in which the same parts as in FIGS. 1 to 3 are given the same reference numerals, and 23 is a screen switching 24 is a timer for measuring the screen switching interval;
Reference numeral 5 denotes a determining unit that determines whether or not it is a commercial based on the screen switching interval.

In the figure, a detection unit 23 detects the timing of screen switching during recording or playback, and measures the time until the next screen switching using a timer 24.1 Normally, commercials are broadcast at regular intervals. Since there are many times, the determining unit 25 determines whether or not it is a commercial based on the screen switching interval.

In this embodiment, like the embodiments shown in FIGS. 1 and 2,
Since it does not require memory or pattern data, it can be configured simply and at low cost.

FIG. 5 is a block diagram showing a fifth embodiment of the recording and reproducing apparatus according to the present invention, in which the same parts as in FIGS. This is an audio multiplex signal detection unit that detects switching.

In the figure, an audio multiplex signal detecting section 26 detects the switching timing of the audio multiplex signal of the broadcast being recorded, a timer 24 measures the interval, and a determining section 25 determines whether or not it is a commercial.

This embodiment utilizes the fact that audio multiplex broadcasting is switched when switching from normal broadcasting to commercials, and does not require memory, so it is possible to have a simple configuration and lower costs.

FIG. 6 is a block diagram showing a sixth embodiment of the recording/reproducing device according to the present invention, in which the same parts as in FIGS. An input request display section that requests the user to manually respond as to whether or not to change the operation mode of the device 1; 28, an external remote controller to which the user responds in response to the input request display section 27; 29, an external remote controller This is an external remote control receiving section that receives No. 28 signals.

In the same figure, when the determination unit 25 detects a commercial in the signal being recorded or played back, the input request display unit 27 allows the user to input whether the operation of the magnetic recording and reproducing device 1 may be changed. to be displayed.

In response, the user responds using the external remote controller 28, and the transmitted signal is sent from the external remote controller receiver 29 to the system controller 18, where the final operation of the magnetic recording/reproducing apparatus 1 is determined.

According to this embodiment, since the final decision is left to the user, commercials can be determined reliably.

Furthermore, the display on the input request display section 27 may be light, text, voice, warning sound, or the like.

Furthermore, it is also possible to combine one or more of the embodiments described above in order to more reliably detect commercials.

FIG. 7 is a perspective view showing the external appearance of a recording/reproducing device according to an embodiment of the present invention, in which parts corresponding to those in the drawings of the above-mentioned embodiments are denoted by the same reference numerals, and 30 is a remote control transmitter. 19
This is a holding member that holds the control device 2 against the control device 2.

As shown in the figure, the control device 2 is attached to the upper part of the magnetic recording and reproducing device 1, and the remote control transmitting section 19 of the controlling device 2 is held by a holding member at a position corresponding to the remote control receiving section 7 of the magnetic recording and reproducing device 1. 30, and transmits and receives control signals.

FIG. 8 is an enlarged view of the main parts of FIG. 7, in which the same parts as in FIG.

As shown in the figure, by making the holding member 30 have a bellows-like structure, it can be freely adapted to the position of the remote control receiving section 7 of the magnetic recording and reproducing device 1 to be connected, and it can be used with various current magnetic fields. The present invention can be applied to a recording/reproducing device.

〔Effect of the invention〕

As explained above, according to the present invention, commercials can be cut or skipped using the current broadcasting system and a normal magnetic recording/reproducing device without requiring the transmission of control signals such as special codes from the broadcasting station. It is possible to provide an excellent recording/reproducing device that can respond to changes in viewing or broadcasting time, improves the functionality of the magnetic recording/reproducing device, and eliminates the drawbacks of the prior art described above.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing a first embodiment of the present invention, Fig. 2 is a block diagram showing a second embodiment of the invention, Fig. 3 is a block diagram showing a third embodiment of the invention, and Fig. 4 is a block diagram showing a third embodiment of the invention. The figure is a block diagram showing a fourth embodiment of the invention, and FIG. 5 is a block diagram showing a fifth embodiment of the invention. FIG. 6 is a block diagram showing a sixth embodiment of the present invention, FIG. 7 is a perspective view showing the external appearance of a recording/reproducing device according to the embodiment of the present invention, and FIG. 8 is an enlarged view of the main part of FIG. 7. It is. 1... Magnetic recording reproducing device, 2... Control device, 7...
・Remote control receiving section, 14... Frequency analysis section, 15...
・Memory 23...detection section, 24...timer, 2
5... Judgment unit, 26... Audio multiplex signal detection unit, 30
...Holding member. N ~ ~ ~

Claims (1)

[Scope of Claims] 1. A recording and reproducing unit that records and reproduces video signals and audio signals, a signal processing unit (10) that processes the video and audio signals, and an operation that controls the operation of the recording and reproducing unit. A recording and reproducing apparatus comprising a control section (9), a determining section (
2) A recording/reproducing device characterized by providing: 2. The recording and reproducing apparatus according to claim 1, further comprising a frequency analysis section (14) for analyzing changes in frequency characteristics of the video signal or the audio signal. 3. Audio multiplex analysis unit that detects multiplexing of the audio signals (
26). The recording/reproducing apparatus according to claim 1, further comprising: 26). 4. The recording and reproducing apparatus according to claim 1, further comprising an image processing section (20) that performs image processing on the video signal and extracts a character pattern. 5. A subtitle detection unit that detects subtitle display in the video signal (
22).The recording/reproducing apparatus according to claim 1, further comprising: 22). 6. The recording and reproducing apparatus according to claim 1, further comprising a timer (24) for measuring a screen switching interval in the video signal. 7. The recording and reproducing apparatus according to claim 1, further comprising an audio level detection section (23) for detecting a change in audio level when switching screens in the video signal. 8. Judgment result display unit (
27).The recording/reproducing apparatus according to claim 1, further comprising: 27). 9. The recording and reproducing apparatus according to claim 8, further comprising a response input section (29) capable of responding to the judgment result display section (27) as to whether the judgment result is acceptable or not. 10. The recording and reproducing apparatus according to claim 1, further comprising a transmitting section (19) for transmitting a signal from the operation control section (9) to the recording and reproducing section. 11. The recording/reproducing apparatus according to claim 10, further comprising a holding member (30) for freely holding the fixed position of the transmitting section (19).