JP2000236502A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce power consumption as much as possible by judging whether a broadcasting content is CM or not, stopping recording only in a CM period with a control signal from a CM judging means and interrupting the supply of power for a mechanical system circuit part during CM. SOLUTION: At a recording mode, a system control part 2 to which reservation recording execution data H11 from a timer part 5 is inputted inputs CM cut mode 'on/off' data and broadcasting form data H12 from a modulation/ amplification part 6, judges whether data is CM or mot and determines whether it is to be recorded as CM or not. The system control part 2 controls a power source A and a power source B with on/off of a power source A control signal D1 and a power source B control signal D2. If executing a CM cut mode, the power source A and the power source B are controlled in the period of recording reservation. The CM cut mode becomes valid if turned 'on/off' by the system control part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recorder such as a video tape recorder.

[0002]

2. Description of the Related Art Conventional commercials (commercials are commercial messages.
Abbreviated as M. 4) A block diagram of a VTR having a cut recording processing function and a change recording processing function is shown in FIG. 4, and its operation timing chart is shown in FIGS. 5 and 6, based on which a conventional CM cut recording processing and change are described below. The recording processing method will be described.

In FIG. 4, this VTR has a video head 9 and a circuit for processing an input video signal.
At the tape speed of the triple mode, recording is performed by the video head 9,
The recording is performed in the longitudinal direction of the magnetic tape 10.

In the recording mode, the broadcast signal from the antenna is demodulated by the tuner unit 1 and becomes a video signal H1.

[0005] Here, it is assumed that the tuner unit 1 is tuned to each desired broadcast channel by a tuning control signal H2 which is output from the system control unit 2 in advance and is selected.

[0006] This is performed by a key input signal H3 output when the user operates the operation section 4 with keys.

[0007] The video signal H1 is converted into a recording signal H4 by the modulation amplification section 6, and is recorded on the video tape 10 by the video head 9. The recording timing at this time is performed by a control signal H5 from the system control 2.

In the recording mode, a mechanical control signal H6 from the system control unit 2 is output to control the VTR mechanism 3, and perform recording processing.

Next, in the reproduction mode, the reproduction signal H7 from the video head 9 is amplified by the reproduction amplifier 7 and output to the demodulator 8. The reproduction signal H8 is demodulated by the demodulation unit 8 and output as an output video signal H9.

Here, in the case of CM cut recording, the system control section 2 outputs the timer recording data H10 to the timer section 5 in response to a key input signal H3 from the operation section 4. The timer unit 5 transmits the scheduled recording execution data H11 to the system control unit 2.

At this time, the scheduled recording execution data from the timer section 5 includes data for switching the CM cut mode between "ON / OFF".

Here, the conventional system control unit 2
Thus, if the content of the broadcast form data H12 is a CM at the time of the CM cut recording reservation, the recording is not performed.

The system control unit 2 controls only the power supply A (within the dashed line in FIG. 2) by turning on / off the power supply A control signal D1.

When the recording reservation time is changed based on the program broadcast time change information transmitted from the broadcasting station, the recording reservation time is input to the system control unit 2 via the tuner unit 1 and the modulation amplification unit 6 from the antenna. The program broadcast time change information is input to the timer unit 5 to change the recording reservation time.

At this time, the scheduled recording execution data from the timer section 5 also includes data for switching "ON / OFF" of the changed recording mode.

Here, the conventional system control unit 2
The broadcast form data H12
If the content is a CM, the recording time is not executed and the start time is changed.

The system controller 2 controls only the power supply A by turning on / off the power supply A control signal D1.

FIG. 5 shows an operation timing chart according to a conventional example of CM cut recording.

First, even if the broadcast content is CM, once the recording reservation is started, the state of the power supply A is kept ON during the period in which the recording reservation is made, and the power is continuously supplied.

FIG. 6 shows an operation timing chart of a conventional example corresponding to change information of a program broadcast time.

In this case, once the recording reservation is started, the state of the power supply A remains ON during the recording reservation period and the stop time until the changed recording start time, and the power is supplied. to continue.

[0022]

However, as in the above-described apparatus, according to the current specifications, the CM cut recording and the change recording are performed in a part where the CM is cut and a part where the recording start time is changed. This is done by a method in which the power of the entire system is turned on even though the process is not executed.

Therefore, there is a disadvantage that the same power is consumed as usual even when recording is not performed.

The present invention has been made in view of such circumstances, and aims to reduce power consumption as much as possible by shutting off unnecessary power supplies when unnecessary.

[0025]

To achieve the above object, according to the present invention, there is provided a video recording apparatus comprising: a broadcast signal receiving means for receiving a broadcast signal; and a mechanical circuit for driving a recording medium and the like. Unit, a signal processing system circuit unit for performing signal processing and system control, power supply means separately provided corresponding to the mechanical system circuit unit and the signal processing system circuit unit, and whether the broadcast content is CM. CM determining means for determining whether or not
According to the control signal from the CM judging means, the CM
Recording stop means for stopping the recording only during the period, and mechanical power supply control means for shutting off the power supply means for the mechanical circuit unit during the CM period according to a control signal from the recording stop means. I do.

According to a second aspect of the present invention, there is provided the recording apparatus, wherein the timer recording means and the recording reservation content stored in the timer recording means are stored based on the program broadcast time change information sent from the broadcasting station. A time change determining means for determining that the time has been changed; and a recording start time changing means for automatically changing a recording start time based on a control signal from the time change determining means; The power supply control means cuts off the power of the mechanical system when the start time of the timer recording is changed based on the control signal from the recording start time changing means.

In the recording apparatus according to the third aspect of the present invention, the tape position when the mechanical system power supply is cut off is the same as the recording position (ie, the position where the tape is wound around the rotary cylinder. (Referred to as the loading position).

The recording apparatus according to a fourth aspect of the present invention includes, as the CM determining means, a determining means for determining a commercial for analog broadcasting and a determining means for determining a CM for digital broadcasting.

[0029]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG.
And FIG. 3, based on which, the CM cut recording and change recording processing methods will be described below.

FIG. 1 is a block diagram showing an embodiment of a video recording / reproducing apparatus according to the present invention, showing an embodiment in which the present invention is applied to a VTR.

This device has a set of video heads 9,
The circuit has a circuit for processing an input video signal, and is recorded by the video head 9 at a tape speed of the standard / 3 times mode, and is recorded in the longitudinal direction of the magnetic tape 10.

In the recording mode, the broadcast signal from the antenna is demodulated by the tuner unit 1 and becomes a video signal H1.

Here, it is assumed that the tuner section 1 is tuned to each desired broadcast channel by a tuning control signal H2 which is output from the system control circuit 2 in advance and is selected.

This is performed by a key input signal H3 output when the user operates the operation section 4 with keys.

The video signal H1 is converted into a recording signal H4 by the modulation amplification section 6, and is recorded on the video tape 10 by the video head 9. The recording timing at this time is performed by a control signal H5 from the system control unit 2.

In the recording mode, a mechanical control signal H6 from the system control unit 2 is output to control the VTR mechanism 3, and perform recording processing.

Next, in the playback mode, the playback signal H7 from the video head 9 is amplified by the playback amplifier 7 and output to the demodulator 8. The reproduction signal H8 is demodulated by the demodulation unit 8 and output as an output video signal H9.

The system control unit 2 outputs the timer recording data H10 to the timer unit 5 in response to a key input signal H3 from the operation unit 4. The timer unit 5 transmits the scheduled recording execution data H11 to the system control unit 2.

At this time, the scheduled recording execution data from the timer unit includes data for switching the CM cut mode “ON / OFF”.

In the present embodiment, in the recording mode, the system control section 2 which has input the timer recording execution data 11 from the timer section 5 sets the CM cut mode “ON”.
/ OFF ”data and the broadcast form data H12 from the modulation amplification section 6 and determine whether or not it is a CM.
It is determined whether or not to record as M.

Here, the system control unit 2 includes a power supply A (in the dashed line in FIG. 1) control signal D1 and a power supply B
The power supply A and the power supply B are controlled by turning on / off the control signal D2 (within the dashed line in FIG. 1).

FIG. 2 is an operation timing chart according to the embodiment of the CM cut mode.

First, the power supply A and the power supply B are controlled in a section where there is a recording reservation. At that time, the CM cut mode is effective when it is turned on by the system control unit 2.

At this time, the power supply A remains ON during the recording reservation section. However, the power supply B is turned ON only when the broadcast content is other than CM.

FIG. 3 is an operation timing chart in a recording time change mode based on program broadcast time change information sent from a broadcasting station.

First, the power supply A and the power supply B are controlled in a section where a recording reservation is made and in a section where the broadcast content is changed and extended by CM. At this time, the changed recording mode is effective when it is turned on by the system control unit 2.

At this time, the power supply A remains ON in the section of the recording reservation and the section in which the broadcast content is changed by the CM and extended.

In the CM cut mode, and when the recording is stopped based on the change information of the program broadcast time sent from the broadcasting station, the mechanical power supply B enters the cutoff mode as described above, In the standby state, the recording tape position is at the full loading position, and the drum motor and the capstan motor are in the stop state.

When the end of the commercial is detected, the commercial cut mode and the changed recording mode are switched off, and the mechanical power supply B is turned on to return to the recording state.

At this time, there is a concern that a tape connection failure of the broadcast content before and after the CM may occur due to a delay in the rise of the drum motor and the capstan motor. However, the rise time of each motor is several seconds, and the broadcast content after the CM is Since the broadcast contents before the CM are broadcast back for several frames, there is no problem in connecting the tape before and after the CM.

As a means for cutting CMs, digital broadcasting will be carried out in addition to the current broadcasting (analog) as a future broadcasting form, for example, in North America, broadcasting by Direct TV will be implemented, and in Europe, broadcasting by the DVB system will be planned. In Japan, several broadcasts including PerfectTV are planned or implemented, and of course, CMs are also broadcast together.

The current analog broadcast CM cut means controls a system control unit by a multiplex broadcast stereo discriminating means to cut a stereo broadcast (CM).
The voice pilot signal discriminating means controls the pause device to perform the CM cutting method, and the screen change detecting means discriminates a level change with a luminance level change of 20% or more, and performs the CM cutting method and the video signal / audio signal. Digital conversion, writing to memory, sampling of specified video and audio data, comparison recording method, closed caption signal extraction means, detecting the presence or absence of a signal with a microcomputer, controlling the mechanism, CM cutting method, wide clear The method of controlling the mechanism by the high signal detecting means of the vision broadcast and recording only the high signal, and controlling the driving circuit by the white character detecting means to prohibit the movement of the recording medium and the CM
The method of cutting, the title is memorized, the pattern is recognized each time the title appears thereafter, the CM is compared with the stored pattern, the method of CM cutting, the cut start / cut at the first / last timing of the image in which the same image is repeatedly broadcast. A stop command is given to detect the start and end of a CM image, a CM cut method, a TV screen display light emission degree searching means to control running and pause of a VTR to cut a CM, etc. , And others are provided.

The digital broadcast CM cutting means multiplexes the identification code and the like of the program information on the transmitting side and transmits the multiplexed information. The receiving apparatus automatically selects the identification code added by the receiving apparatus.
The CM cutting method, the CM cutting method by the real-time TV frame-sharing recognition means before the transmission of the frame-chart by the total number of bits from the frame comparison indicating the digital sign of the frame, etc. Others are provided.

Further, the power of the mechanical system may be shut off when the recording start time is being changed based on the program broadcast time change information sent from the broadcast station.

The CM cutting means of the present invention is not limited to the broadcasting system.
When the CM cut recording is stopped and when the recording is stopped in the recording start time change state, the mechanical power supply is cut off to provide a low power consumption device.

[0056]

Since the recording apparatus according to the first aspect of the present invention has the above-described configuration, the control of the power supply part is divided into a plurality of parts, and the power supply of the unnecessary standby part is cut off by the means. Thus, when the CM cut recording is stopped, the power consumption of the mechanical system is cut off, so that the power consumption can be reduced.

Since the recording apparatus according to the second aspect of the present invention has the above-described configuration, the control of the power supply section is divided into a plurality of sections, and the power supply of the unnecessary standby section is cut off by the means. Based on the program broadcast time change information sent from the broadcasting station, when recording is stopped while the recording start time is being changed, power consumption can be reduced by turning off the mechanical power supply. It becomes possible.

Since the recording apparatus according to the third aspect of the present invention has the above-described configuration, the tape can be quickly driven at the start of recording.

Since the recording apparatus according to the fourth aspect of the present invention has the above-described configuration, the power consumption can be reduced by discriminating the CM in both analog broadcasting and digital broadcasting. .

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a recording device according to an embodiment of the present invention.

FIG. 2 is a timing chart illustrating a CM cutting operation according to the embodiment of the present invention.

FIG. 3 is a timing chart illustrating an operation in a recording start time change state according to the embodiment of the present invention.

FIG. 4 is a block diagram illustrating a configuration of a conventional recording apparatus.

FIG. 5 is a timing chart illustrating a conventional CM cutting operation.

FIG. 6 is a timing chart illustrating an operation in a conventional recording start time change state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tuner part 2 System control part 3 VTR mechanical mechanism 4 Operation part 5 Timer part 6 Modulation amplification part 7 Reproduction amplification part 8 Demodulation part 9 Video head 10 Magnetic tape H Broadcasting signal from an antenna H1 Input video signal H2 Tuning control signal H3 Key input signal H4 Recording signal H5 Recording timing signal H6 Mechanical control signal H7 Reproduction signal H8 Demodulation reproduction signal H9 Video signal H10 Reserved recording data H11 Reserved recording execution data H12 Broadcast form data D1 Power supply A control signal D2 Power supply B control signal

Claims (4)

[Claims] 1. A recording device for recording a video signal on a recording medium, a broadcast signal receiving means for receiving a broadcast signal, a mechanical circuit unit for driving the recording medium, etc., and a signal processing and system control. A power supply means separately provided corresponding to the mechanical circuit part and the signal processing circuit part, and a commercial determination means for determining whether or not the broadcast content is commercial A recording stop means for stopping recording only during a commercial period during recording according to a control signal from the commercial determination means; and a power supply for the mechanical system circuit section during the commercial period according to a control signal from the recording stop means. And a mechanical power supply control means for shutting off the supply means. 2. A recording apparatus for recording a video signal on a recording medium, a broadcast signal receiving means for receiving a broadcast signal, a mechanical circuit section for driving the recording medium, etc., and a signal processing and system control. A signal processing system circuit unit, a power supply unit separately provided corresponding to the mechanical system circuit unit and the signal processing system circuit unit, and a clock unit, and at least recording start time information is stored, Timer recording means for performing recording when the recording start time comes, and that the recording reservation content stored in the timer recording means is temporally changed based on program broadcast time change information sent from a broadcasting station. And a recording start time changing means for automatically changing a recording start time based on a control signal from the time change determining means, wherein the mechanical power supply control In stage, recording apparatus characterized by interrupting the power supply of the mechanical system when on the basis of a control signal from the recording start time changing means has changed the start time of timer recording. 3. The recording apparatus according to claim 1, wherein a tape is used as the recording medium, and a tape path when a mechanical power supply is shut off has the same position as that at the time of recording. A recording device characterized in that: 4. The recording apparatus according to claim 1, further comprising: a discriminating unit that discriminates a commercial of an analog broadcast; and a discriminating unit that discriminates a commercial of a digital broadcast. Recording device.