JP2000312324A - Image recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify confirmation of contents of a TV program and operations for video recording. SOLUTION: A magneto-optical recording and reproducing device 8 reads a schedule list of TV program and a monitor 7 displays the list. When a user uses a remote commander or the like to select a desired program, the magneto- optical recording and reproducing device 8 reads contents of the selected TV program and the monitor 7 displays it. Furthermore, the user selects a TV program going to be reserved for video recording while the monitor 7 displays the TV pogrom schedule list and operates the video recording to make the video recording operation of data, time and channel of the TV program and the like are completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image recording / reproducing apparatus such as a video tape recorder.

[0002]

2. Description of the Related Art A conventional video tape recorder sequentially records TV programs and the like on a magnetic tape and sequentially reproduces them. Further, in a conventional video tape recorder, when a recording reservation of a TV program is made, a user needs:
The contents of the TV program are confirmed while referring to the information magazine in which the schedule table of the TV program is described.
The date, recording time, and channel of the V program were individually input.

[0003]

In the conventional video tape recorder described above, in order to know where and what is recorded on the magnetic tape, the user relies on an index mark or a tape counter to fast-forward or rewind the tape. There was no other way but to play and check.

[0004] Further, even if an index of the recorded contents of the tape is recorded using a small-capacity storage device such as an IC card or the like, only an index of a simple type by a counter value or a character can be recorded. Was. For this reason, it has been difficult to create an index that accurately indicates the recorded content of the tape.

[0005] When a frame buffer is provided in a video tape recorder, one still image can be held, but the number of still images cannot be increased. There is a problem of disappearing.

[0006] Further, when making a recording reservation for a TV program,
The user needs to confirm the contents of the TV program while referring to the information magazine in which the schedule table of the TV program is described, and individually input the date, recording time and channel of the TV program to be recorded. There has been a problem that the recording operation becomes complicated.

[0007] The present invention has been made in view of such a situation, and it is intended to accurately indicate the recorded contents of a tape, to create and record an index which will not be lost when the power is turned off, and to provide the contents of a TV program. It is an object of the present invention to provide an image recording / reproducing apparatus which makes it possible to easily perform confirmation of recording and a recording reservation operation.

[0008]

A first image recording / reproducing apparatus according to the present invention comprises a first reading means for reading a TV program schedule table recorded on a recording medium and a first reading means for reading the TV program schedule table. First display means for displaying a TV program schedule table, selection means for selecting a desired TV program from the TV program schedule table displayed by the first display means, and contents of the TV program selected by the selection means. Second reading means for reading from a recording medium, and second display means for displaying the content of a desired TV program selected by the selecting means, which is read by the second reading means. I do.

A first image recording / reproducing method according to the present invention comprises a first reading step for reading a TV program schedule table recorded on a recording medium, and a TV program schedule table read in the processing of the first reading step. , A selection step of selecting a desired TV program from the TV program schedule table displayed in the processing of the first display step, and the contents of the TV program selected in the processing of the selection step. A second reading step for reading from the recording medium, and a desired TV selected in the selecting step and read in the second reading step.
And a second display step of displaying the contents of the program.

[0010] A second image recording / reproducing apparatus according to the present invention comprises: reading means for reading a TV program schedule table recorded on a recording medium; display means for displaying the TV program schedule table read by the reading means; Selecting means for selecting a desired TV program from the TV program schedule table displayed by the means;
Recording reservation means for recording the V program.

A second image recording / reproducing method according to the present invention includes a reading step of reading a TV program schedule table recorded on a recording medium, and a displaying step of displaying the TV program schedule table read in the processing of the reading step. A selecting step of selecting a desired TV program from the TV program schedule table displayed in the processing of the displaying step;
Recording a TV program selected in the processing of the selection step.

According to the first image recording / reproducing apparatus and method of the present invention, a TV program schedule table recorded on a recording medium is read, the read TV program schedule table is displayed, and the displayed TV program schedule table is displayed. A desired TV program is selected from the schedule table, and the contents of the selected TV program are read from the recording medium, read, and the contents of the selected desired TV program are displayed. Therefore, it is easy to confirm the contents of the TV program.

In the second image recording / reproducing apparatus and method according to the present invention, a TV program schedule table recorded on a recording medium is read, the read TV program schedule table is displayed, and the displayed TV program schedule table is displayed. A desired TV program is selected from the schedule table, and the selected TV program is reserved for recording. Therefore, the recording operation of the TV program is simplified.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a configuration of an embodiment of a video tape recorder (hereinafter abbreviated as VTR) to which the image recording / reproducing apparatus of the present invention is applied. The VTR control unit 1 switches the channel of the tuner 2 in response to a user operation of a remote controller (not shown) or the like, and instructs the switch 3 to select either an external input or an output of the tuner 2. , A control signal indicating a recording instruction or a reproduction instruction to the VTR mechanism and the controller 4, a data read / write control signal to the still image controller 5 and the magneto-optical recording and reproducing device 8, and a still image to the still image controller 5. A display instruction signal is given, and date and time information is given to the still image controller 5 from the timer 1T.

The VTR mechanism and the controller 4 include a VT
When receiving a recording control signal from the R control unit 1, the tuner 2 supplied via the switch 3
An image signal from an external device or an external input is recorded on a magnetic tape, and the recorded image is output to a frame buffer 6. The frame buffer 6 stores an image signal from the VTR mechanism and the controller 4 when receiving a control signal for instructing writing from the still image controller 5, and receives a control signal for instructing reading from the still image controller 5 when The stored image signal is output to a monitor (that is, a television receiver) 7, and the monitor 7 displays an image indicating the received signal.

When receiving a control signal indicating still image processing from the still image controller 5, the frame buffer 6 stores the image output from the VTR mechanism and the controller 4 as a still image for one frame, and indicates the still image. The image data is supplied to the still image controller 5. On the other hand, the counter value of the counter 4C operating in synchronization with the tape recording operation of the VTR mechanism and the controller 4 is also supplied to the still image controller 5.

When receiving a data write control signal from the control unit 1, the still image controller 5 receives the still image data from the frame buffer 6, the date and time information from the timer 1T, and the counter. The header including the counter value from 4C is supplied to the magneto-optical recording / reproducing device 8 and recorded on the magneto-optical disk of the magneto-optical recording / reproducing device 8.

When the control unit 1 supplies a data read control signal to the still image controller 5 and the magneto-optical recording / reproducing device 8, the header-added still image data reproduced from the magneto-optical disk of the magneto-optical recording / reproducing device 8 Is supplied to the still image controller 5. The still image controller 5 stores the header portion in the storage unit, and supplies the still image data to the frame buffer 6. The frame buffer 6 temporarily stores the still image data supplied from the still image controller 5. The image indicated by the data stored in the frame buffer 6 is displayed on the monitor 7.

When the user looks at the still image displayed on the monitor 7 and selects the still image using a remote controller (not shown), the VTR control unit 1 stores the still image in the still image controller 5. The corresponding header is transferred to the VTR mechanism and the controller 4 and a control signal for instructing the VTR mechanism and the controller 4 to reproduce is given. As a result, the VTR mechanism and the controller 4 start reproducing the tape from the count value included in the header sent from the still image controller 5.

FIG. 2 shows an example of the configuration of the magneto-optical recording / reproducing apparatus 8 of FIG. The magneto-optical recording / reproducing device 8 of FIG.
Personal audio equipment (portable, stationary, in-vehicle)
This is a system called MD (mini-disc: trademark) developed for the purpose of (1). It is a read-only (read / play) optical disk with a diameter of 64 mm, a read / write type, ie, a rewritable MO (magneto-magnetic) disk, or a read-write type. (Ie, a rewritable) area and a partial ROM (hybrid) disk having a read-only area, using a recording medium in which a cartridge is housed, and an MO disk or a partial ROM disk by a magnetic field modulation overwrite recording method. In the case of a read-only type optical disk which records data and detects a reproduction signal by utilizing the light diffraction phenomenon in a pit row of a target track, and in the case of a read / write type magneto-optical disk, the reflected light from the target track Of the reproduced signal by detecting the difference in the polarization angle (Kerr rotation angle) In the case of a partial ROM disk, a read signal is detected for a read-only area by utilizing the light diffraction phenomenon in a pit row of a target track, and a reflection from the target track is detected for a read / write area. The reproduction signal is detected by detecting the difference in the polarization angle (Kerr rotation angle) of the light.

In the magneto-optical recording / reproducing apparatus 8, the integration of each circuit element and the optimization of each mechanical component are achieved in the course of development as a personal audio device, and the overall apparatus is reduced in size and weight. In addition to the low power consumption, battery operation is possible. Furthermore, in addition to the feature that it has almost the same storage capacity (120 Mbytes) as the existing 3.5-inch MO disk drive and that the recording media can be exchanged, the mass-production effect makes it possible to compare with other MO disk drives. It is possible to reduce the manufacturing cost of the main unit and recording media,
From the track record of use as personal audio equipment,
Reliability has also been fully demonstrated.

In this embodiment, the magneto-optical recording / reproducing device 8
Is a rewritable or rewritable magneto-optical (M
O) Use a disc. The magneto-optical recording / reproducing device 8
When reading is instructed by the TR control unit 1, the image and header recorded on the magneto-optical disk are read and sent to the still image controller 5, and when writing is instructed by the VTR control unit 1, the image is written to the magneto-optical disk. And write the header.

In the magneto-optical recording / reproducing apparatus shown in FIG. 2, the magneto-optical disk 8 is driven to rotate by a spindle motor 802.
The magnetic head 808 applies a modulation magnetic field corresponding to recording data in a state where laser light is irradiated from the optical pickup 806 to the magnetic head 04 to perform magnetic field modulation overwrite recording along a recording track of the magneto-optical disk. By tracing the target track of the magnetic disk 804 with a laser beam by the optical pickup 806, data is reproduced magneto-optically.

The optical pickup 806 includes a laser light source such as a laser diode, optical components such as a collimator lens, an objective lens, a polarizing beam splitter, and a cylindrical lens, and a photodetector divided into a predetermined arrangement. Magnetic disk 804
Are positioned by the feed motor 810 at a position facing the magnetic head 808 with the.

When recording data on the magneto-optical disk 804, the optical pickup 806 drives the magnetic head 808 by the magnetic head drive circuit 809 and applies a modulation magnetic field according to the recording data.
By irradiating the target track, data is recorded by thermomagnetic recording.

The optical pickup 806 detects a laser beam irradiated on a target track, thereby detecting a focus error by, for example, an astigmatism method, detecting a tracking error by, for example, a push-pull method, and When reproducing data from the disk 804, a difference in the polarization angle (Kerr rotation angle) of the reflected light from the target track is detected to generate a reproduction signal.

The output of the optical pickup 806 is supplied to an RF circuit 812. The RF circuit 812 extracts a focus error signal and a tracking error signal from the output of the optical pickup 806, and
And a reproduction signal is binarized and supplied to an address decoder 816. Address decoder 816
Decodes the address from the supplied binarized reproduction signal, outputs the decoded signal to the EFM / CIRC encoder / decoder 818, and converts the binarized reproduction data other than the binarized reproduction data related to the address into the EFM / CIRC. Supply to encoder / decoder 818.

The servo control circuit 814 includes, for example, a focus servo control circuit, a tracking servo control circuit, a spindle motor servo control circuit, a thread servo control circuit, and the like.

The focus servo control circuit controls the optical pickup 806 so that the focus error signal becomes zero.
Focus control of the optical system. The tracking servo control circuit controls the feed motor 810 of the optical pickup 806 so that the tracking error signal becomes zero.

Further, the spindle motor servo control circuit controls the spindle motor 802 to rotate the disk 804 at a predetermined rotation speed (for example, a constant linear speed). Further, the thread servo control circuit causes the feed motor 810 to move the magnetic head 808 and the optical pickup 806 to the target track position of the disk 804 specified by the system controller 820.

EFM / CIRC encoder / decoder 8
18 is a coding process for error correction, that is, CI processing, for the data supplied via the interface 800.
RC (Cross Interleave Reed-
In addition to performing encoding processing of a Solomon Code (Solomon Code), modulation processing suitable for recording, that is, EFM (Eight)
to Fourteen Modulation).

EFM / CIRC encoder / decoder 8
The encoded data output from 18 is supplied to the magnetic head drive circuit 809 as recording data. The magnetic head drive circuit 809 drives the magnetic head 808 so as to apply a modulation magnetic field according to the recording data to the disk 804.

When the system controller 820 receives a write command from the VTR control section 1 via the interface 800, the system controller 820 transfers the recorded data to the disk 804.
The recording position on the disk 804 is controlled so as to be recorded on the recording track of the disk 804. This recording position control is performed by EF
The system controller 804 manages the recording position of the encoded data output from the M-CIRC encoder / decoder 818 on the disk 804, and sends a control signal specifying the recording position of the recording track of the disk 804 from the system controller 820 to the servo. This is performed by supplying the signal to the control circuit 814.

At the time of reproduction, the EFM / CIRC encoder / decoder 818 performs EFM demodulation processing and CIRC decoding processing for error correction on the input binarized reproduction data. Output.

When a read command is received from the VTR control section 1 via the interface 800, the system controller 820 controls a reproduction position with respect to a recording track of the disk 804 so that reproduction data is continuously obtained. . The control of the reproduction position is performed by setting the position of the reproduction data on the disc by the system controller 82.
The control is performed by supplying a servo control circuit 814 with a control signal designating a reproduction position on a recording track of the disk 804.

FIG. 3 is a perspective view showing an example of the external configuration of the embodiment of FIG. In this example, all the components shown in FIG. 1 are housed in one case to configure the VTR 1000. On the front surface of the VTR 1000, a cassette storage slot 30 is formed, in which a video tape cassette 34 is loaded. The magneto-optical recording / reproducing device 8 has a VT
A magneto-optical disk housed in a cartridge 804C is loaded from a slot 40 provided on the left side of the R1000 and provided on the front.

FIG. 4 shows an example of the format of a still image file used in the embodiment of FIG. In this example,
The still image file includes a plurality of still image data headers and still image data pairs following the still image file header.

FIG. 5 shows an example of the format of the still image file header of FIG. In this example, the still image file header includes a still image data format ID, a version number, a file header size, a still image data total size, an attribute, a channel, a date, a start time, an end time, a pointer to a representative screen, and a classification code. including. FIG. 6 shows an example of items included in the still image file header of FIG. 4, and an example of the size and content of each item.

FIG. 7 shows an example of the format of the still image data header of FIG. In this example, the still image data header includes a still image data size, an image width, an image height, a compression mode, and a relative time from the start time. FIG. 8 shows an example of items included in the still image data header of FIG. 4 and sizes and contents of each item.

FIG. 9 shows an example of still image data used in the embodiment of FIG. The still image data is digital data read from the frame buffer 6 and is obtained by fetching and arranging data line by line from the upper left corner to the right, and each pixel data is composed of red data, green data, and 5-bit data. Consists of blue data.

In the above-described embodiment, when recording a program such as a TV, the frames of the video to be recorded are recorded as still images on the magneto-optical disk 804 of the magneto-optical recording and reproducing apparatus 8 at appropriate intervals. In addition, the index of the still image of the video tape can be held. That is, when a still image is recorded on the magneto-optical disk 804 of the magneto-optical recording / reproducing apparatus 8, for example, as shown in FIGS. 5 and 6, the recorded date, time, and channel are recorded as a still image header file. Also, as shown in FIGS. 7 and 8, the relative time from the start time which is the recording mode and the tape position information (the counter 4C in FIG.
Is recorded). When the still image is read from the magneto-optical disk 804, stored in the frame buffer 6 via the still image controller 5, and displayed on the monitor 7, the tape position information corresponding to the still image is displayed in the still image controller. 5 is stored in the storage unit. The user looks at the still image displayed on the monitor 7 and
When this still image is selected by input from a remote controller or the like (not shown), the VTR control unit 1
The tape position information stored in the controller 5 is stored in the VT
A command is transmitted to the R mechanism and the controller 4, and a control signal for instructing reproduction is given to the VTR mechanism and the controller 4. Thereby, V
The TR mechanism and the controller 4 start reproducing the tape from the position indicated by the tape position information sent from the still image controller 5.

As described above, if the still image of the contents recorded on the magnetic tape and the index which is the tape position information are recorded on the randomly accessible disk 804, the reproduction of the still image greatly enhances the reproduction of the still image. The recorded contents of the tape can be visually checked in a short time, and when the user instructs a still image, the tape can be automatically fast-forwarded or rewound to the position, and the tape can be reproduced.

Since the image stored in the frame buffer 6 can be recorded on the disk 804 as a still image at any time, it can be used as a TV image still camera.

In the case of timer reservation, the scheduled start time and the scheduled end time may be recorded.

The time interval for recording a still image is short at the start of recording on a tape and slightly longer thereafter, so that the user can easily understand what has been recorded. The time interval for recording a still image may be automatically set by the VTR control unit 1 or may be selected by the user.

Further, in order to identify a plurality of video tapes, a bar code sticker or the like on which a serial number is recorded is pasted in advance at a specific position (for example, a back portion) of the tape cassette. The tape may be identified by reading the portion with an internal sensor.

If the user wants to record only the scene, such as a TV program present, a quiz, or the like, or a cooking program material, the user operates a freeze frame by using a remote controller or the like. 1, a still image display instruction is given to the still image controller 5, a control signal for instructing still image processing is given from the still image controller 5 to the frame buffer 6, and the frame buffer 6 temporarily stores the TV image as a still image. This still image is recorded on the magneto-optical disk 804 of the magneto-optical recording / reproducing device 8 via the still image controller 5. Disk 80
Since the capacity of No. 4 is large as described above, any number of freeze frames can be recorded on the disk 804 with ease and can be viewed later.

Although the above embodiment relates to the case where the magneto-optical recording / reproducing device 8 uses a read / write disk, the following advantages can be obtained even when a read-only disk is used. That is, in the TV program information paper,
A schedule table of TV programs for several days and explanations of the contents are provided, which are recorded on a read-only optical disk. For example, when the user selects a day or time on the screen of the monitor 7, a schedule table of the corresponding TV program is displayed on the monitor 7, and when the user wants to know more about a specific program, a remote controller or the like is used. By specifying the program, the description of the program and a part of the program are displayed as a still image, and the user operates the recording reservation to set the date, time, and channel. By enabling recording, program selection and recording operation by the user are greatly simplified.

By making it possible to display anything such as characters and pictures on the screen of the monitor 7, the entire contents of the TV program information paper can be recorded on the optical disk.
Also, by using a read-only optical disk, the manufacturing cost can be reduced. Also, a so-called mini-disc (MD) as shown in FIG. 2 has a small size, which is advantageous for transportation.

According to the image recording / reproducing apparatus of the present invention, the image recorded by the image recording / reproducing apparatus main body is temporarily stored in the frame buffer as a still image, and the still image and its position information are recorded on the disk-shaped recording medium. With this configuration, it is possible to create and record an index that accurately indicates the recording content of the tape and that does not disappear when the power is turned off.

[0051]

According to the first image recording / reproducing apparatus and method of the present invention, a TV program schedule table recorded on a recording medium is read, the read TV program schedule table is displayed, and the displayed TV program schedule table is displayed. , A desired TV program is selected, the content of the selected TV program is read from the recording medium, and the content of the selected desired TV program is displayed. Therefore, it is possible to easily confirm the contents of the TV program.

According to the second image recording / reproducing apparatus and method of the present invention, a TV program schedule table recorded on a recording medium is read, the read TV program schedule table is displayed, and a desired TV program schedule table is displayed. T
A V program is selected, and recording of the selected TV program is reserved. Therefore, the recording operation of the TV program can be simplified.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an image recording / reproducing apparatus of the present invention.

FIG. 2 is a block diagram showing a configuration example of the magneto-optical recording / reproducing apparatus of the embodiment of FIG.

FIG. 3 is a perspective view showing an example of an external configuration of the embodiment of FIG.

FIG. 4 is a view showing an example of a format of a still image file used in the embodiment of FIG. 1;

5 is a diagram illustrating an example of a format of a still image file header in FIG. 4;

6 is a diagram showing an example of items included in the still image file header of FIG. 4, and an example of the size and content of each item.

FIG. 7 is a diagram illustrating an example of a format of a still image data header in FIG. 4;

8 includes items included in the still image data header of FIG. 4,
FIG. 4 is a diagram showing an example of the size and contents of each item.

FIG. 9 is a diagram showing an example of still image data used in the embodiment of FIG.

[Explanation of symbols]

1 VTR controller, 5 still image controller, 6
Frame buffer, 7 monitor (TV), 8 magneto-optical recording / reproducing device, 804 magneto-optical disk, 100
0 VTR

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04N 5/7826 H04N 5/782 Z 5/91 5/91 Z

Claims (4)

[Claims] 1. An image recording / reproducing apparatus having a function of recording or reproducing information on a recording medium, wherein: first reading means for reading a TV program schedule table recorded on the recording medium; First display means for displaying the TV program schedule table read by the means; selecting means for selecting a desired TV program from the TV program schedule table displayed by the first display means; The contents of the TV program selected by the means,
Second reading means for reading from the recording medium; and second display means for displaying the contents of the desired TV program selected by the selecting means, read by the second reading means. An image recording / reproducing apparatus characterized by the above-mentioned. 2. An image recording / reproducing method for an image recording / reproducing apparatus having a function of recording or reproducing information on a recording medium, comprising: a first reading step of reading a TV program schedule table recorded on the recording medium; A first display step of displaying the TV program schedule table read in the processing of the first reading step; and a desired TV program from the TV program schedule table displayed in the processing of the first display step. A second reading step of reading, from the recording medium, the contents of the TV program selected in the processing of the selecting step; and A second display step of displaying the contents of the desired TV program selected in the processing of the selection step. Image recording and reproducing method that. 3. An image recording / reproducing apparatus having a function of recording or reproducing information on a recording medium, comprising: a reading section for reading a TV program schedule table recorded on the recording medium; Display means for displaying the TV program schedule table; selection means for selecting a desired TV program from the TV program schedule table displayed by the display means; and recording reservation of the TV program selected by the selection means An image recording / reproducing apparatus comprising: a recording reservation unit. 4. An image recording / reproducing method for an image recording / reproducing apparatus having a function of recording or reproducing information on a recording medium, wherein: a reading step of reading a TV program schedule table recorded on the recording medium; A display step of displaying the TV program schedule table read in the processing of the step; a selecting step of selecting a desired TV program from the TV program schedule table displayed in the processing of the display step; and a processing of the selecting step And a recording reservation step of making a recording reservation for the TV program selected in (1).