JPS62291780A - Information recording and reproducing device - Google Patents

Abstract

PURPOSE:To automatically reproduce plural main information with a desired condition regardless of the conditions of the information at the time of recording by outputting the main information reproduced by a reproducing means with a reproduction condition set by setting means, and recording thus set reproduction condition in a recording medium by a recording means as a subinformation. CONSTITUTION:A reproduced signal is inputted to a conversion circuit 5, separated into a main information and a subinformation, and the former is inputted to a processing circuit 6. A reproduction condition set by the setting circuit 11 is outputted to the processing circuit 6 as its control signal, and the circuit 6 processes a video signal and an audio signal according to the control signal. Accordingly, the video signal is outputted to a monitor 7 with the reproduction condition set by the setting circuit 11, and the audio signal is outputted likewise to a speaker 9 via an amplifier circuit 8. And the reproduction condition set by an operator by using the setting circuit 11 as watching a monitor 7 and hearing from the speaker 9 is outputted from the conversion circuit 5 as a subcode, and recorded (in form of after recording) on a magnetic tape 1.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an information recording and reproducing apparatus typified by an 8 mm video tape recorder.

[Summary of the invention]

In the present invention, reproduction conditions set when reproducing main information are recorded as sub information.

[Conventional technology]

In an 8 mm video tape recorder, the video signal is recorded on the portion of the inclined track that corresponds to the 180 degree winding angle on the rotating drum, and the video signal is recorded on the portion of the inclined track that corresponds to the 36 degree winding angle on the rotating drum. It is now possible to record an accompanying PCM audio signal. And PC
In the M audio signal recording area, a subcode signal as sub information accompanying a video signal as main information is stored as PCM.
This subcode signal can be recorded in place of an audio signal (in this case, the audio signal can be recorded on parallel tracks or frequency-multiplexed on inclined tracks as required). For example, since the date and time when the main information was recorded, the number of the main information, etc. can be recorded, this subcode signal can be used to search for a predetermined item from among a plurality of pieces of main information.

[Problem that the invention seeks to solve]

However, the conditions for recording multiple video signals (programs) are not necessarily the same, so when multiple programs are played back in succession, the screen may suddenly become dark, for example at the change of program. In order to correct 9, it was necessary to reset the playback conditions each time, which was cumbersome to operate.

[Means for solving problems]

The present invention relates to an information recording and reproducing apparatus, and a reproducing means for reproducing main information recorded on a recording medium.

A setting means for setting a reproduction condition for a reproduction signal outputted from the reproduction means, and a processing means for processing the reproduction signal to the reproduction condition set by the setting means and outputting the resultant signal.

A conversion circuit that converts the reproduction conditions set by the setting means into sub information accompanying the main information, and a recording means that records the sub information outputted by the conversion circuit on a recording medium.

The present invention is characterized by comprising a control means for controlling the timing of recording the sub information so that the main information is not erased when the sub information is recorded.

[Effect]

The main information reproduced by the reproduction means is output under the reproduction conditions set by the setting means. The set playback conditions are recorded as sub information on the recording medium by the recording means.

〔Example〕

FIG. 1 is a block diagram when the information recording/reproducing apparatus of the present invention is applied to an 8 mm video tape recorder. In the figure, reference numeral 1 denotes a magnetic tape, and a reproduction signal from the magnetic tape 1 is transmitted through a rotating magnetic head 2 (only one is shown for convenience), a switch 3. The signal is input to the conversion circuit 5 via the amplifier circuit 4.

The conversion circuit 5 separates the input signal into a video signal (and/or audio signal) as main information and a subcode signal as sub information. The main information is input to the processing circuit 6, and the sub information is further converted into a control signal and input to the setting circuit 11. The setting circuit 11 controls the processing circuit 6 in response to the control signal, and the processing circuit 6 sends the video signal to the monitor device 7.
Then, the audio signals are outputted to the speakers 9 via the amplifier circuit 8. 12 is a control circuit such as a microcomputer, and a conversion circuit 5. Controls the setting circuit 11 etc.

Reference numeral 13 denotes an amplification circuit that amplifies the signal from the conversion circuit 5 and outputs it to the magnetic tape 1 via the switch 3 and the rotating magnetic head 2.

When a predetermined mode (off mode) signal and a reproduction start signal are input to the control circuit 12, the control circuit 12 causes the magnetic tape 1 and the rotary magnetic head 2 to run or rotate at a predetermined speed. As a result, the video signal and audio signal as main information and the subcode signal as sub information recorded on the inclined track of the magnetic tape 1 are reproduced. At this time, the control circuit 12 switches the switch 3 to the amplifier circuit 4 side, so that the reproduced signal is input to the conversion circuit 5.

The conversion circuit 5 separates the input reproduced signal into main information and sub information. The main information is input to the processing circuit 6.

When the off mode is set, the control circuit 12 prohibits the control signal from being output from the conversion circuit 5 to the setting circuit 11.

The setting circuit 11 is configured to allow playback conditions to be set and input by manual operation. For example, as shown in Figure 2, the playback conditions are 16 different sharpness (SHARPNESS) from soft (S OF T) to hard (HARD).
It can be specified to any level among the levels. Regarding other video signals, the color depth (COL OR)
From veil (PALE) to vivid (V I V I
D), Hue (HUE) from PURPLE to GREEN, Contrast (CONTRA)
ST) from DARK to LIGHT
, brightness (BHIGHT) from low (LOW) to high (
You can select and specify any level from among the 16 levels, such as HIGH H). Similarly, for audio signals, for example, the volume (VOLUME)
, treble (TREBLE), bass (BASS), etc. to the lowest (
It can be set to any level out of 16 levels from MIN to MAX. When performing such a setting operation, 1. For example, as shown in FIG.
) and the set level (in this embodiment, the seventh level) are displayed on the monitor 7 for a predetermined period of time (for example, 3 seconds) from the time of the operation.

When a two-digit hexadecimal number is used as the data for setting the playback conditions, the second digit can be used as data that specifies the target of the playback condition, and the first digit can be used as the data that specifies its level. For example, the display in FIG. 3 appears as 17 (target is 1 and level is 7).

When recording this data, each digit is expressed as a 4-bit binary number, resulting in a total of 8 bits (for example, 17
becomes 00010111).

The playback conditions set by the setting circuit 11 are output as control signals to the processing circuit 6, and the processing circuit 6 processes the video signal and audio signal in response to the control signal 6. Therefore, the playback conditions set by the setting circuit 11 are used to process the video signal and the audio signal. The signal is output to the monitor 7, and the audio signal is output to the speaker 9 via the amplifier circuit 8.

When the off mode is input, the control circuit 12 controls the conversion circuit S, the reproduced subcode signal is output to the setting circuit 11, and the reproduction conditions set by the setting circuit 11 are output to the amplifier circuit 13. It is prohibited to do so.

On the other hand, when the recording (WRITE) mode is input together with the reproduction start signal, the conversion circuit 5 converts the reproduction conditions set by the setting circuit 11 into a subcode signal. In this case, the control circuit 12 connects the switch 3 to the amplifier circuit 4 side when the rotating magnetic head 2 serving as a recording or reproducing means faces the video signal recording area, and outputs a reproduced signal as in the off mode. However, the subcode signal (P
CM signal) When it comes to a position facing the recording area, it is switched to the amplifier circuit 13 side. Therefore, the reproduction conditions set by the setting circuit 11 while being viewed and listened to by the monitor 7 and the speaker 9 are outputted as a subcode signal from the conversion circuit 5, and are supplied to the rotating magnetic head 2 via the amplifier circuit 13 and switch 3, and are then output to the magnetic tape 1. recorded on top (after-recording). Of course, in this recording mode, input of the subcode signal extracted from the reproduced signal to the setting circuit 11 is prohibited.

Next, when the read (READ) mode is set and input together with a playback start signal, the control circuit 12 outputs a control signal to the setting circuit 11 and the conversion circuit 5 to prohibit input of playback conditions by manual operation, and also prohibits input of playback conditions by manual operation. Output to 13 is prohibited. Also, at this time, the conversion circuit 5 separates the video signal, audio signal, and subcode signal from the playback signal, outputs the first two to the processing circuit 6, and converts the last to a control signal and outputs it to the setting circuit 11. . The setting circuit 11 outputs this signal to the processing circuit 6 in the same manner as a manually input signal. Therefore, the processing circuit 6 outputs a video signal and an audio signal to the monitor 7 and the speaker 9, respectively, under reproduction conditions corresponding to the subcode signal recorded on the magnetic tape 1.

In this way, if the subcode signal is pre-recorded and set to read mode, the main information can always be reproduced under predetermined reproduction conditions simply by performing a reproduction operation. For example, even if the recording levels of the audio signals of the programs are different, each program can be played back at a constant volume without having to operate the volume of the setting circuit 11 for each program.

Also, if you play back in recording mode, the set playback conditions will be automatically updated. Therefore, for example, by reproducing a normally recorded program by performing fade-in and fade-out operations, the same reproduction conditions can be achieved in the read mode, making it possible to perform wake-up playback, sleep playback, etc. Furthermore, if there is a commercial part in the middle of the program,
By muting that part, you no longer have to listen to that part. That is, by operating the enhancer, graphic equalizer, etc. included in the setting circuit 11 in addition to the volume, editing can be performed without changing the recording state of the main information. By setting the off mode, it is possible to reproduce unedited main information that is the same as that at the time of recording.

In the recording mode, the subcode signal is updated. To prevent inadvertent updates, the recording mode is executed only when the operating mode changes to a predetermined mode (for example, from stop mode to playback mode, or from review mode to playback mode). (For example, when changing from recording mode to playback mode or from rewind mode to playback mode, recording mode is not set.)

In order to set predetermined reproduction conditions in recording mode, it is necessary to monitor main information. Therefore, an auto mode can be provided in which the read mode is automatically entered at the beginning of each main information before the record mode is entered.

When the auto mode is selected, first the beginning of each main information is detected. The beginning part is detected from the start code in the subcode signal. For example, if the start code is set to 1 for about 9 seconds from the start point of each main information and set to O thereafter, the beginning part is detected depending on whether the start code is 1 or not.

If the beginning is detected, the flag is turned off and read mode is set. Therefore, the subcode signal is read out, converted into a control signal, and the corresponding reproduction conditions are set. As a result, the video signal and audio signal as main information are played back and output in accordance with the playback conditions recorded in advance as sub information.The above operations are continued until the beginning part is finished. When the flag is completed, the presence or absence (on, off) of the flag is determined. When the flag is off, it is determined whether or not the playback condition settings have been changed. When no setting change command is input from the setting circuit 11, the process moves to the above-mentioned read mode step. When a setting change is specified, the flag is turned on and the recording mode is set. Therefore, the reproduction conditions set and inputted by the user while watching and listening to the reproduced images and reproduced audio are converted into subcode signals and recorded on the magnetic tape. Once the flag is turned on, it will not be turned off until the beginning of the next main information is detected unless the auto mode is canceled. Therefore, the recording mode is continued until the end of the main information.

The above operation is shown in a flowchart as shown in FIG.

Note that the present invention can also be applied to information recording and reproducing devices such as R-DAT.

〔effect〕

As described above, the present invention provides an information recording and reproducing apparatus including a reproducing means for reproducing main information recorded on a recording medium, a setting means for setting reproducing conditions for a reproducing signal output from the reproducing means, and a setting means for setting the reproducing signal. a processing means for processing and outputting the reproduction conditions set by the setting means; a conversion circuit for converting the reproduction conditions set by the setting means into sub information accompanying the main information; and recording the sub information outputted by the conversion circuit on a recording medium. The present invention is equipped with a recording means for recording the sub information and a control means for controlling the recording timing of the sub information so that the main information is not erased when the sub information is recorded. Information can be automatically recorded, and a plurality of pieces of main information can be automatically reproduced under desired conditions regardless of the conditions at the time of recording.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the information recording and reproducing apparatus of the present invention, and FIG.
FIG. 3 is an explanatory diagram of the reproduction conditions, FIG. 3 is an explanatory diagram of the display, and FIG. 4 is a flowchart thereof. 1... Magnetic tape 2... Rotating magnetic head 5... Conversion circuit 6... Processing circuit 7... Monitor 9... Speaker 11... Setting circuit 12... Control circuit and above

Claims (1)

[Claims] a reproduction means for reproducing main information recorded on a recording medium; a setting means for setting reproduction conditions for a reproduction signal outputted from the reproduction means; and a setting means for processing the reproduction signal to the reproduction conditions set by the setting means. processing means for outputting the information, a conversion circuit for converting the reproduction conditions set by the setting means into sub information accompanying the main information, and a recording means for recording the sub information outputted by the conversion circuit on the recording medium. and a control means for controlling the recording timing of the sub information so that the main information is not erased when the sub information is recorded.