JPH01149228A - Optical disk recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the successive reproducing of a series of information by causing a first optical head and a second optical head to access to the track of a disk-shaped recording medium respectively independently. CONSTITUTION:An optical disk PD is turned and operated by a motor 14 and acoustic information are respectively written in the order of a take A101, a take B102 and a take C103, for example, by a first optical head 12. When these information are successively reproduced, at first, a take AA101a is reproduced with using the first optical head 12 and continuously, a take BB102b is reproduced with using a second optical head 13. Then, a take CC103c is reproduced with using the first optical head 12. Thus, the take AA101a, the take BB102b and the take CC103c can be successively reproduced with being linked.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an optical disc recording and reproducing device, and in particular to an optical disc recording and reproducing device that can stitch and edit continuous information such as audio information and video information. be.

[Prior art] Figure 3 shows, for example, '85 Optical Memory Symposium Proceedings P.
It is a schematic diagram showing the conventional optical disc recording and reproducing apparatus shown on pages 177 to 180, in which (1) to (4) are a plurality of optical disc players, for example, four optical disc players, and (5) is a synchronization signal generator (hereinafter referred to as SSG). ) and is connected to each optical disc player. (6) is a personal computer, (7) is this personal computer (
6) and an interface connecting each optical disc player, (
8) is a timing generator connected to each optical disc player and personal computer (6);
) is a video switcher connected to each optical disc player and timing generator (8), and (10) is a monitor connected to this video switcher (9).

The conventional optical disc recording and reproducing apparatus is configured as described above, and each of the optical disc players (1) to (4) operates synchronously with the output of the SSG (5) so that the rotational speed and rotational phase of the optical disc PD match. Furthermore, the phase of the chroma (not shown) of the video signal is also synchronized. Each optical disc player also has a video switcher (
9), and is controlled by a personal computer (6) as an editing controller. A timing generator (8) outputs a video switching command from a personal computer (6) in synchronization with frame pulses from each optical disc player, and uses the output to operate a video switcher (9) to eliminate synchronization disturbance and switching noise. The work of determining the 0Mi convergence point at which the video signal is to be switched is all done by instructions from the personal computer (6). First, the optical disc players (1) to (4) are specified, and then the output of the monitor (10) is specified. Determine the editing point while looking. The TA collection data is stored as a file on a floppy disk (not shown) of the personal computer (6).A simulation of the zero editing result is performed by the personal computer (6) by interlocking each optical disk player and the video switcher (9).

[Problems to be Solved by the Invention] In the conventional optical disc recording and reproducing apparatus, which aims to perform TS by splicing continuous information such as audio information and video information, it is necessary to prepare a plurality of optical disc players. Therefore, the structure is complicated, and the optical disc player has to be operated synchronously with high precision.

The present invention was made in order to solve the above-mentioned problems, and provides an optical disc recording and reproducing device with a simple structure that does not require synchronized operation of an optical disc player and can continuously reproduce a series of information. The purpose is to obtain.

[Means for Solving the Problems] An optical disc recording and reproducing apparatus according to the present invention includes a first optical head capable of writing information on a disc-shaped recording medium and reproducing the information, and at least the first optical head. a second optical head capable of reproducing information written by the second optical head; and a drive for causing the first optical head and the second optical head to each independently access a predetermined track of the disk-shaped recording medium. The means are provided.

[Operation] In the present invention, a continuous series of information is reproduced by causing the first optical head and the second optical head to independently access the tracks of the disk-shaped recording medium.

[Embodiment] FIG. 1 is a front view showing an embodiment of the present invention. In the figure, (PD) is a disk-shaped recording medium such as an optical disk, and (12) is a device for writing information on this optical disk (PD). a first optical head capable of reproducing (13
) is a second optical head capable of reproducing information written on the optical disk (PD) by at least the first optical head (12), and (101) is a second optical head (101) that can reproduce information written on the optical disk (PD) by at least the first optical head (12).
) (hereinafter referred to as tick A) (
(101a) is a part of tick A (hereinafter referred to as tick AA); (102) is reproduced by the second optical head (13); (102b) is a part of tick B (hereinafter referred to as tick BB), (103) is the first
The area where information is written by the optical head (work 2)
(hereinafter referred to as tick C), (103c) is a part of tick C (hereinafter referred to as tick cc). FIG. 2 is a side view for explaining the operation of the embodiment shown in FIG.
) is a motor that rotates an optical disk (PD).

Next, the operation of the above embodiment will be explained with reference to FIGS. 1 and 2. The optical disc (PD) is powered by a motor (14
), the first optical head (12)
For example, acoustic information is written in the order of tick A (101), tick B (102), and tick C (103). Here, for example, as shown in FIG. 1, tick AA (101a) is a part of tick A (101), tick BB (102b) is a part of tick B (102).
, a partial tick CC (103c) of tick C (103)
If you want to play these pieces of information continuously, the second
As shown in the figure, first, the first optical head (12) is used to reproduce tick A Tick B using the second optical head (13)
B (102b), the first optical head accesses the start position of the tick CC during this time), and then the first optical head (12) is used to play back the tick CC (103c) to access the tick AA. (Iota) and Tik B
B (102b) and tick CC (103c) can be continuously connected and reproduced.

In the above embodiment, the information written on the optical disc (PD) is audio information, but the information written may be video information.

[Effects of the Invention] As explained above, the present invention includes a first optical head capable of writing information on a disk-shaped recording medium and reproducing the same, and at least information written by the first optical head. A second optical head capable of reproducing information, and a driving means for causing the first optical head and the second optical head to each independently access a predetermined track of the disk-shaped recording medium. Therefore, information from various parts of the optical disc can be played back continuously and at high speed, and compared to conventional optical disc players equipped with multiple units, the structure is simpler, smaller, easier to control, and lower costs. It produces the effect that can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view for explaining the operation of the embodiment of the invention, and FIG. 3 is a schematic diagram showing the configuration of a conventional optical disc recording/reproducing device. . In the figure, (PD) is an optical disk, (12) is a first optical head, (13) is a second optical head, and (14) is a motor. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. PD; Tensk 12: To the light of ff1l, Rad 13 To the light of Hama 2, 7 Dokou 2 figure tick CC re β

Claims (1)

[Claims] (1) A first optical head capable of writing information on a disk-shaped recording medium and reproducing this information; and a second optical head capable of reproducing information written by at least the first optical head. and a driving means for causing the first optical head and the second optical head to access predetermined tracks of the disc-shaped recording medium, respectively.