JPH0983953A - Signal recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from being confused due to the same contents not outputted from an analog signal output terminal at the time of recording or reproducing digital data by indicating that digital data is recorded or reproduced. SOLUTION: At the time of recording digital data, for instance, an input part 414 supplies an instruction signal an expressing the meaning to a microcomputer 416 so that a digital data recording processing circuit 403 comes into the state of recording operation and a switch means SW6 select-outputs a recording signal from the digital data recording processing circuit 403. At this time a switch means SW3 selectively outputs a signal from a signal generation circuit 411, a switch means SW4 mutes a switch signal to the side (i) and a switch means SW5 selectively outputs a signal from a digital input terminal D-IN. Namely at the time of recording digital data, a signal from the signal generation circuit 411, that is character information such as 'recording digital data', is outputted from analog output terminals V-OUT and O-OUT.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to controlling a signal output from an analog output terminal at the time of recording / reproducing a digital signal in a signal recording / reproducing apparatus capable of recording / reproducing an analog signal and a digital information signal respectively. is there.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram for explaining a video tape recorder having a digital data recording function which is used together with a decoder means.

As a means for recording / reproducing analog signals and digital signals, a magnetic recording / reproducing apparatus for color video signals and audio signals for simultaneously recording video signals and audio signals in the form of analog and digital signals. 122
653), recording digital video and audio signals /
Digital / analog recording / reproducing system capable of recording / reproducing an analog signal together with reproduction (Japanese Patent Laid-Open No. 6-23
No. 1535) was proposed.

Such a magnetic recording / reproducing apparatus or a combined digital / analog recording / reproducing system has become popular worldwide at the same time as it corresponds to the digital broadcasting which is being considered for implementation in the future and also corresponds to the current analog broadcasting signal. It is trying to maintain compatibility with home VTRs.

On the other hand, in order to record and reproduce such an analog signal and a digital signal, as shown in FIG. 3, it is used together with a decoder 2 which receives a broadcast digital signal and converts and outputs it into a signal processable form. A video tape recorder (signal recording / reproducing device; hereinafter also simply referred to as "VTR") 4 having a digital data recording function is considered.

The broadcast digital signal is received by the first antenna 1 and supplied to the decoder 2. The decoder 2 comprises a tuner 21, a switching means 22 and a decoding means 23. The tuner 21 converts the reception signal supplied from the first antenna 1 into a predetermined form and supplies it as digital data to the switching means 22 and the VTR 4, respectively. To do.

The switching means 22 switches and outputs the above-mentioned digital data and the digital data reproduced in the VTR 4 which will be described later, and supplies any one of the output digital data to the decoding means 23. Decoding means
Reference numeral 23 decodes any of the supplied digital data into an analog signal and supplies it to the second input system of the display device such as the TV receiver 5.

The VTR 4 applies a predetermined signal processing to the digital data supplied from the tuner 21 through the digital input terminal D-IN and outputs a digital recording signal, and a digital signal recording processing system for magnetically outputting the digital recording signal. And a rotary head for recording on a tape.
Further, the VTR 4 is designed to be an analog signal from the second antenna 3 for receiving an analog broadcast signal such as a current TV signal or an analog signal supplied via the analog external input terminals V-IN and O-IN. It has an analog signal recording processing system for performing the signal processing of 1 to output an analog recording signal, and a rotary head for recording the analog recording signal on a magnetic tape. Further, the VTR 4 is a digital signal reproduction processing system having a configuration complementary to the above-mentioned digital signal recording processing system for reproducing the recorded analog signal or digital signal, respectively, and a configuration complementary to the above-mentioned analog signal recording processing system. And an analog signal reproduction processing system having.

The digital signal reproduced by the digital signal reproduction processing system is supplied to the above-mentioned switching means 22 through the digital output terminal D-OUT, and the analog signal obtained by decoding the digital signal by the decoding means 23 is the above-mentioned. It is supplied to the second input system of the existing TV receiver 5.
On the other hand, the analog signal reproduced by the analog signal reproduction processing system is supplied to the first input system of the TV receiver 5 through the analog external output terminals V-OUT and O-OUT.

In this way, the decoder 2 and the VTR 4 with a digital data recording function can record an analog signal and a digital signal, respectively, and display each reproduced signal on the current TV receiver 5 or the like.

[0011]

By the way, the above-mentioned V
When monitoring the signal information to be recorded in TR4, the display of the video input of the TV receiver 5 is selected. For example, if the display of the first input system of the TV receiver 5 is selected, the analog signal output of the VTR 4 can be monitored. However, since the VTR 4 described above does not have a function of decoding a digital signal by itself, when the VTR 4 is recording digital data, its contents are not output from the analog external output terminals V-OUT and O-OUT.

If the analog signal recording / reproducing system of the VTR 4 has the same structure as that of a conventional video tape recorder, the signals output from the analog external output terminals V-OUT and O-OUT will be the analog external input terminal V. -IN, O-IN or an analog signal supplied via the second antenna 3, the analog signal input to the analog signal recording / reproducing system is output during digital data recording. That is, it is conceivable that an analog signal irrelevant to the recorded digital data is output.

Therefore, when the user selects the display of the first input system of the TV receiver to monitor the contents recorded by the VTR 4 while recording the digital data, the actually recorded digital data is recorded. It will monitor contents different from. That is, since the recorded digital data cannot be monitored, there is a risk that the user may be confused.

When the digital data to be recorded is monitored, it is necessary to convert the digital data into an analog signal via the above-mentioned decoding means 23, and at that time, the decoder input (second input) of the TV receiver. Has to be selected, which may confuse the user.

Therefore, regarding the above-mentioned digital signal broadcasting, a system has been considered in which a viewing fee is added each time a digital signal is decoded into an analog signal, and a signal recording for preventing user's confusion without passing through a decoder unnecessarily. The advent of a playback device was desired.

In response to the inconvenience of the user described above, in a video tape recorder which does not have a function of decoding a digital signal by itself, an unrelated analog signal is not output during digital data recording, or the user does not output an analog signal. The advent of a signal recording / reproducing apparatus that prevents the confusion of the above has been desired.

[0017]

Therefore, the present invention provides the following configurations (1) to (3) in order to solve the above-mentioned problems.

(1) A first aspect of the present invention magnetically records the first switching means SW7, SW8 for switching the input of a plurality of analog signals and the analog signals output from the first switching means SW7, SW8. Analog signal recording processing means 401, 402 for performing a predetermined signal recording processing for that purpose, digital data recording processing means 403 for magnetically recording digital data,
Analog signal reproduction processing means 408, 409 having a configuration complementary to the analog signal recording processing means for reproducing an analog signal from a magnetic tape having a signal recorded thereon, and reproducing digital data from the magnetic tape having a signal recorded thereon. Therefore, the digital data reproduction processing means 410 having a configuration complementary to the digital data recording processing means 403, the analog signals output from the first switching means SW7, SW8, and the analog signal reproduction processing means 408, 409 Second switching means SW9, SW10 for switching and outputting the output analog signal respectively, and when magnetically recording or reproducing the digital data, the second switching means SW9, S10
W10 provides a signal recording / reproducing apparatus characterized by switching and outputting the analog signals output from the first switching means SW7 and SW8.

(2) The second aspect of the present invention is characterized in that, when magnetically recording or reproducing the digital data, the second switching means SW9, SW10 mutes the output signal. Signal recording and reproducing device.

(3) A third invention magnetically records the first switching means SW1 and SW2 for switching the input of a plurality of analog signals and the analog signals output from the first switching means SW1 and SW2. Analog signal recording processing means 401, 402 for performing a predetermined signal recording processing for that purpose, digital data recording processing means 403 for magnetically recording digital data,
Analog signal reproduction processing means 408, 409 having a configuration complementary to the analog signal recording processing means for reproducing an analog signal from a magnetic tape having a signal recorded thereon, and reproducing digital data from the magnetic tape having a signal recorded thereon. Therefore, the digital data reproduction processing means 410 having a configuration complementary to the digital data recording processing means 403, the signal generation means 411 for generating and outputting a predetermined information signal indicating that the digital data recording or reproducing operation is being performed, and the first A second analog signal output from the switching means SW1 and SW2, an information signal output from the signal generating means 411, and an analog signal output from the analog signal reproduction processing means 408 and 409 are switched and output. When the digital data is magnetically recorded or reproduced, the second switching means SW3, SW4 have switching means SW3, SW4. There is provided a signal recording and reproducing apparatus and outputting switching the serial information signal.

[0021]

1 is a block diagram for explaining a first embodiment of a signal recording / reproducing apparatus according to the present invention, and FIG. 2 is a block diagram for explaining a second embodiment of the signal recording / reproducing apparatus according to the present invention. It is a block diagram. Embodiments of the present invention will be described below with reference to the drawings from the first embodiment. The same components as those described above are denoted by the same reference numerals, and description thereof will be omitted.

(First Embodiment) First, as shown in FIG.
The first embodiment of the signal recording / reproducing apparatus according to the present invention mainly comprises a signal recording system A and a signal reproducing system B. At this time, the analog signal means a video (video) signal and an audio (audio) signal. Here, the signal recording / reproducing apparatus 4 includes the signal recording system A and the signal reproducing system B described above.
In addition to the above, the input unit 414 for inputting a user's operation instruction and a microcomputer 416 are included. For example, the input unit 414 is for instructing switching of recording / reproducing operation of analog signals and digital data, switching of recording signal input (switching of switch means described later), and an instruction signal to the microcomputer 416 in response to these instructions. supply aa. The microcomputer 416 controls a signal recording system A, a signal reproducing system B, and switch means SW1 to SW6, which will be described later, based on an instruction signal aa from the input section 414.

The signal recording system A includes a tuner 1 for receiving an analog broadcast signal and outputting an analog signal, and an analog signal and a tuner 1 supplied from a transmission line (not shown) via analog external input terminals V-IN and O-IN. A video signal recording processing circuit 401 for performing predetermined recording signal processing on the analog (video) signals output from the switch means SW1 and SW2 and the switch means SW1 for switching and outputting the analog signals output from the switch means SW1 and SW2,
An audio signal recording processing circuit 402 for performing a predetermined recording signal processing on the analog (audio) signal output from the switch means SW2.
, A digital data signal recording processing circuit 403 for performing a predetermined recording signal processing on the digital data supplied from the decoder 2 via the digital input terminal D-IN, and a predetermined recording signal output from the video signal recording processing circuit 401. Recording amplifier 404 for amplifying to level, audio signal recording processing circuit
402 or switch means SW6 for selectively outputting the recording signal output from the digital data signal recording processing circuit 403
, A recording amplifier 405 that amplifies the recording signal output from the switch means SW6 to a predetermined level.

The recording signals amplified and output by the recording amplifiers 404 and 405 are supplied to the rotary heads H1 and H2, respectively, and recorded on the magnetic recording medium such as the magnetic tape T by the rotary heads H1 and H2. At this time, the rotary heads H1 and H2 scan the magnetic tape T to form a predetermined tape pattern and record the above-described recording signal.

Here, the above-mentioned video signal recording processing circuit 40
1 and the audio signal recording / processing circuit 402 are the same as the signal recording / processing circuit of a well-known home video tape recorder. That is, the video signal recording processing circuit 401 separates the video signal into a luminance signal and a chrominance signal, and frequency-modulates and low-frequency converts each to modulate the video signal into a recording signal for magnetically recording the audio signal. The signal recording processing circuit 402 subjects the audio signal to frequency modulation to a recording signal for magnetic recording. Then, similar to a well-known home video tape recorder, a rotary head records a recording signal in a deep layer of a magnetic tape.

Further, the digital data signal recording processing circuit 403 described above adds an error correction code to the digital data supplied from the decoder 2 via the digital input terminal D-IN, and obtains the obtained digital code. Is converted into a signal (digital recording signal) suitable for magnetic recording. Then, this digital recording signal is sent to the switch means SW.
Supply to 6. At this time, the switch means SW6 is a microcomputer
416 supplies a digital recording signal to the recording amplifier 405 when recording digital data, and records a recording signal from the audio signal recording processing circuit 402 when recording an analog signal.
Switching control is performed so that the power is supplied to the 405.

At this time, in order to use the rotary head efficiently in the above signal recording system A, it has been described that the same recording amplifier 405 is used so as to serve as the rotary head for recording the audio signal and the digital data. Of course, the rotary head for recording the video signal and the digital data may also be used, or the rotary head for recording the digital data may be provided without using the rotary head.

The signal reproducing system B includes the above-mentioned rotary head H1,
Preamplifiers 406 and 407 for amplifying the respective reproduction signals to a predetermined level in order to obtain a reproduction signal obtained by scanning the magnetic tape T from H2 to a wide area in a flat manner, and a reproduction signal output from the preamplifier 406 is a video signal. A video signal reproduction processing circuit 408 for demodulating into an audio signal, an audio signal reproduction processing circuit 409 for demodulating a reproduction signal output from the preamplifier 407 into an audio signal, or a preamplifier.
A digital data reproduction processing circuit 410 for decoding the reproduction signal output by 407 into digital data, a video signal obtained by demodulation by the video signal reproduction processing circuit 408, and an analog (video) signal output from the switch means SW1 described above. , A switch means SW3 for switching and outputting a signal from a signal generating circuit 411 described later, an audio signal obtained by demodulation by the audio signal reproduction processing circuit 409, and an analog (audio) signal output from the switch means SW2. And a switch means SW4 for muting an audio signal, and a switch for switching and outputting the digital data obtained by decoding by the digital data reproduction processing circuit 410 and the signal from the digital input terminal D-IN. Means SW5, an output amplifier 412 for amplifying the video signal output from the switch means SW3 to a predetermined level, a switch means SW4 An output amplifier 413 that amplifies the output audio signal to a predetermined level, an analog output terminal V-OUT, O-OUT that supplies the amplified analog signals of the output amplifiers 412 and 413 to a transmission line (not shown), and a switch means SW5. And a digital output terminal D-OUT for supplying the digital data to a transmission line (not shown).

Here, the above-mentioned signal generating circuit 411 is, for example, a signal including character information such as “during digital data recording”, a predetermined symbol indicating that digital data is being recorded or reproduced, or a simple blue back (display screen is (Represented by the solid blue color), which is supplied to the switch means SW3.

Now, for example, at the time of analog signal recording, an instruction signal to that effect is supplied from the input unit 414 to the microcomputer 416, and the video signal recording processing circuit 401 and the audio signal recording processing circuit 402 enter the recording operation state. Switch means SW1,
SW2 is tuner 1 or analog signal external input terminal V-IN,
Select an analog signal from either O-IN. Then, at this time, the switch means SW3, SW4 become the switch means SW1, SW2.
Select the analog signal from to output the analog output terminal V-
The signals to be recorded are output to the OUT and O-OUT monitors. The switch means SW6 selectively outputs the recording signal from the audio signal recording processing circuit 402 (outputs the m side). That is, an analog signal is magnetically recorded on the magnetic tape T, and a signal to be recorded is output from the analog output terminals V-OUT and O-OUT as a monitor.

For example, at the time of digital data recording, an instruction signal aa to that effect is supplied from the input unit 414 to the microcomputer 416, the digital data recording processing circuit 403 enters a recording operation state, and the switch means SW6 causes the digital data recording processing. The recording signal from the circuit 403 is selectively output (n side is output). At this time, the switching means SW3 is the signal generating circuit 41
The signal from 1 is selectively output (the f side is output), and the switch means SW4 switches to the i side to mute the signal. Then, the switch means SW5 selectively outputs the signal from the digital input terminal D-IN (outputs the k side). That is, at the time of recording digital data, the signal (character information such as "during digital data recording" or blue background) is output from the signal generating circuit 411 to the analog output terminals V-OUT and O-OUT. , The user can check the output from the analog output terminal V-OUT to check the status of this signal recording / reproducing device.
It is possible to prevent the user from being confused even if switching is performed using a receiver or the like.

Further, since no signal is supplied to the analog output terminal O-OUT, it is possible to prevent generation of unnecessary voice information and noise. It goes without saying that the i side of the switch means SW4 may be supplied with the output of a voice memory or the like in which a synthesized voice for notifying that "the digital signal is being recorded" is stored. That is, it is possible to prevent the user from being confused by the voice.

During analog signal reproduction, an instruction signal aa to that effect is supplied from the input section 414 to the microcomputer 416, the video signal reproduction processing circuit 408 and the audio signal reproduction processing circuit 409 enter the reproduction operation state, and the switch means SW3 Then, SW4 selectively outputs the reproduction signals from the video signal reproduction processing circuit 408 and the audio signal reproduction processing circuit 409 (g side and j side are output respectively).

During digital data reproduction, an instruction signal aa to that effect is supplied from the input section 414 to the microcomputer 416, the digital data reproduction processing circuit 410 enters the reproduction operation state, and the switch means SW5 causes the digital data reproduction processing circuit 410 to operate. Selectively output the digital data from (output the 1 side). At this time, for example, the reproduction signal detecting unit 415
The signal reproduced by providing is an analog signal,
It goes without saying that any one of the digital data may be detected and the above switching may be automatically performed based on the detection result. At this time, for example, the reproduction signal detector
Reference numeral 415 may identify an analog signal and digital data by a detection hole provided in a cassette accommodating a magnetic tape, and also serves as a rotary head for recording an audio signal and digital data as in this embodiment. In this case, it goes without saying that the reproduction signal of the rotary head H2 may be identified by the frequency spectrum.

The signal generating circuit 411 may be configured to generate only the synchronizing signal of the video signal, or the circuit itself may be omitted and the video may be muted in the same manner as the audio. Is. In this case, for example, if an LED that lights up during recording or reproducing of digital data, or a liquid crystal display panel indicating that effect is provided on the operation panel or front surface of the signal recording / reproducing apparatus, the signal is supplied to the first input system. Users are not confused when the signal is muted.

(Second Embodiment) Next, a second embodiment of the signal recording / reproducing apparatus according to the present invention will be described. As shown in FIG. 2, the switch means SW1, SW1 of the signal recording system A of the first embodiment. SW
2. The switch means SW3 and SW4 of the signal reproduction system B are replaced with switch means SW7 and SW8 and switch means SW9 and SW10, respectively.

The signal recording system A is provided with a plurality of analog external input terminals V-IN1, V-IN2, O-IN1, O-IN2, and any one of the analog external input terminals (for example, external input terminals V-IN2, O -IN
2) is designated as an output only from the decoder 2. During recording of digital data, the switch means SW7, SW8 selectively output the outputs from the decoder 2 (the q side and the t side are output respectively), and the switch means SW9, SW10 are the switch means SW7, S.
The output from W8 is selectively output (the u side and the w side are output respectively). That is, the content of the recorded signal can be monitored by directly outputting the analog signal output from the decoder 2 to the analog signal output terminals V-OUT and O-OUT. It should be noted that the switch means is also used when recording analog signals and reproducing digital data.
SW9 and SW10 selectively output the outputs from the switching means SW7 and SW8 (output the u side and the w side respectively). During analog signal reproduction, switch means SW9 and SW10 are video signal reproduction processing circuits 408
And the reproduction signals from the audio signal reproduction processing circuit 409 are selectively output (the v side and the x side are output respectively).

It should be noted that the switch means SW9, SW10 are respectively provided with third input terminals which are grounded in an alternating current, and the switch means SW9, SW10 are switched to these third input terminals at the time of reproducing a digital signal. Of course, the signals output to the analog signal output terminals V-OUT and O-OUT may be muted. At this time, the user is not confused by providing an LED for indicating the recording or reproducing of digital data or a liquid crystal panel on the front surface of the signal recording / reproducing apparatus as in the first embodiment. In this way, the signal generating circuit 411, the audio memory, etc. of the first embodiment can be omitted.

[0039]

As described above, according to the configuration of the present invention, when recording or reproducing digital data, the same content as the signal being recorded or reproduced is not output from the analog signal output terminal. The effect is that it can prevent the confusion of. That is, since the signal generation means can display that the signal recording / reproducing apparatus is recording or reproducing the digital data, it is possible to prevent user's confusion caused by the inability to monitor the signal. .

In addition to the above effects, according to the configuration of the present invention, it is possible to notify the user of the digital data recording or reproducing state without decoding the digital signal to be recorded into an analog signal. This has the effect of preventing user confusion without going through the decoder as necessary.

[Brief description of drawings]

FIG. 1 is a block diagram for explaining a first embodiment of a signal recording / reproducing apparatus according to the present invention.

FIG. 2 is a block diagram for explaining a second embodiment of the signal recording / reproducing apparatus according to the present invention.

FIG. 3 is a block diagram for explaining a video tape recorder with a digital data recording function used together with a decoder means.

[Explanation of symbols]

SW1, SW2 ... First switching means, 401, 402 ... Analog signal recording processing means, 403 ... Digital data recording processing means, 40
8, 409 ... Analog signal reproduction processing means, 410 ... Digital data reproduction processing means, 411 ... Signal generation means, SW3, SW4 ...
Second switching means.

Claims (3)

[Claims] 1. A first switching means for switching the input of a plurality of analog signals, and an analog signal recording processing for performing a predetermined signal recording processing for magnetically recording the analog signal output from the first switching means. Means, digital data recording processing means for magnetically recording digital data, and analog signal reproduction processing means having a configuration complementary to the analog signal recording processing means for reproducing an analog signal from a magnetic tape on which a signal is recorded. A digital data reproduction processing means having a configuration complementary to the digital data recording processing means for reproducing digital data from a magnetic tape on which a signal is recorded; and an analog signal output from the first switching means, A second switch for switching and outputting the analog signal output from the analog signal reproduction processing means, respectively. And means, when said digital data magnetic recording or reproducing, said first switching means outputs the switching signal coming from a predetermined input terminal, said second switching means said first
2. A signal recording / reproducing apparatus, which switches and outputs an analog signal output by the switching means. 2. The signal recording / reproducing apparatus according to claim 1, wherein the second switching means mutes the output signal when magnetically recording or reproducing the digital data. 3. A first switching means for switching the input of a plurality of analog signals, and an analog signal recording processing for performing a predetermined signal recording processing for magnetically recording the analog signal output from the first switching means. Means, digital data recording processing means for magnetically recording digital data, and analog signal reproduction processing means having a configuration complementary to the analog signal recording processing means for reproducing an analog signal from a magnetic tape on which a signal is recorded. A digital data reproduction processing means having a configuration complementary to the digital data recording processing means for reproducing digital data from a magnetic tape on which a signal is recorded; and a predetermined information signal indicating that a digital data recording or reproducing operation is in progress. A signal generating unit for generating and outputting, and an analog signal output from the first switching unit, A second switching means for switching and outputting the information signal output from the signal generation means and the analog signal output from the analog signal reproduction processing means, respectively, when magnetically recording or reproducing the digital data. The signal recording / reproducing apparatus is characterized in that the second switching means switches and outputs the information signal.