RU2405220C2 - Device for cleaning of optical heads of information reading from dvd or blue ray compact discs - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: device for cleaning of optical heads of information reading from DVD or Blue Ray compact discs includes cleaning compact disc equipped with one or more cleaning elements, having inner, zero path, containing input information on compact disc, path with record, programs for control of motion of optical heads of information reading from optical compact discs in process of cleaning and additional path, one or more cleaning elements are arranged between the path with record of program for control of motion of optical heads of information reading from optical compact discs in process of cleaning and additional path.

EFFECT: provides for possibility of high-quality information recording, also the program one, on additional path of cleaning compact disc, thus increasing quality of cleaning of optical heads of information reading from DVD or Blue Ray compact discs.

4 dwg

Description

The invention relates to the field of storing information on DVD or Blue Ray compact discs.

A device for cleaning optical heads for reading information from various types of compact discs, including video CDs (DVD). The device comprises a cleaning CD equipped with one or more cleaning bodies, having an internal zero track, containing introductory information about the video CD, a track located under the cleaning element, and a track with the recording of the program for controlling the movement of optical heads for reading information from video CDs during the cleaning process , RU 34796 U1.

This device is quite effective in cleaning optical heads, which are used to read information from audio and computer CDs, but it does not completely provide cleaning of optical heads intended for video CDs.

This is because the video CD is read from the center to the periphery. Therefore, when using this device, the track located under the cleaning organ (usually containing text) is read first, and only then the track is read with the recording of the optical head movement control program. As a result of this, the track located under the cleaning organ is read at the minimum speed and, accordingly, at the same speed, the head contacts the cleaning organ, which significantly reduces the cleaning efficiency.

A device for cleaning optical heads for reading information from DVD CDs is also known, including a cleaning CD equipped with one or more cleaning bodies, having an internal, null track containing input information about the CD, a track with recording the optical head motion control program reading information from DVD CDs during the cleaning process and an additional track located under the cleaning organ.

The track with the recording of the motion control program of the optical heads for reading information from DVD CDs during the cleaning process is located between the internal, zero track and the additional track located under the cleaning body; on an additional track, a video, audio test or so-called “silence recording” can be recorded; on an additional track, in principle, any data can be placed, including program information, RU 46600.

This technical solution is taken as a prototype of the present invention.

However, considering the disadvantages of the prototype, it should be noted that DVD DVDs, and especially Blue Ray CDs, have a very high recording density. Therefore, the shading of the section of the track located under the cleaning organ is essential, especially with several cleaning organs. With a high information recording density, the permissible length of the shaded section of the track sharply decreases, the information on which can be sufficiently restored using the Reed-Solomon codes recorded on optical compact discs (Reed-Solomon loss compensator).

Therefore, in the prototype device on the additional track only information with the necessary quality can be recorded with a partial loss of which is not significant - test information or “silence recording”.

The recording of program information on an additional track located under the cleaning organ is ineffective for the above reasons, although it should be noted that such a recording could allow the cleaning of optical heads for reading information from CDs not only when the optical heads move from the center of the cleaning disk to it periphery, but also in the opposite direction.

This disadvantage of the prototype is compounded compared to DVD CDs in the case of Blue Ray CDs having an even higher recording density; in this case, the implementation of even a test recording on an additional track of the cleaning disk of the prototype device is practically impossible with its satisfactory quality.

The objective of the present invention is to enable high-quality recording of information, including software, on an additional track of a cleaning CD, and thereby improving the quality of cleaning of optical heads for reading information from DVD or Blue Ray CDs.

According to the invention, in a device for cleaning optical heads for reading information from DVDs or Blue Ray CDs, including a cleaning CD equipped with one or more cleaning bodies, having an internal, null track containing input information about the CD, a program recording track control the movement of the optical heads reading information from optical CDs during the cleaning process and an additional track, one or more cleaning bodies are located between the track with the recording of the control program the optical heads reading information from optical CDs during the cleaning process and an additional track.

The applicant has not identified any technical solutions identical to the claimed, which allows us to conclude that the invention meets the criterion of "novelty."

The implementation of the features of the invention makes it possible to provide high-quality recording of program information on an additional track of a cleaning CD, which is an urgent problem, especially for high-density information CDs; as a result, it also becomes possible to clean DVDs and / or Blue Ray compact discs not only when the optical heads move from the center of the cleaning disc to its periphery, but also in the opposite direction; thus significantly improves the quality of cleaning.

These new properties of the object, achieved through the implementation of the features of the invention, allow, according to the applicant, to conclude that the claimed technical solution meets the criterion of "inventive step". At the same time, the applicant notes that he did not identify any sources of information that would contain information about the effect of the claimed distinguishing features of the invention on the achieved technical result.

The invention is illustrated by drawings, which depict:

figure 1 - cleaning CD, view from the side of the cleaning body;

figure 2 is a diagram illustrating the trajectory of the cleaning body relative to the lens of the optical head for reading information from optical compact discs;

figure 3 is a longitudinal section of an optical head and a fragment of a cleaning CD with a faceted face when the optical head moves from the center of the cleaning CD to its periphery (arrow A);

figure 4 is the same as in figure 3 when the optical head moves from the periphery of the cleaning CD to its center (arrow B).

A device for cleaning optical heads 1 for reading information from DVDs or Blue Ray CDs includes a cleaning CD 2 equipped in one particular example with one cleaning organ 3, however, several cleaning organs may be necessary if it is necessary to improve the quality of cleaning of the optical heads 1, for example with severe pollution (smoke) of the air surrounding the equipment. In a specific example, a 5-inch cleaning CD is used. On the inner zero track 4 information about the type of disc (“DVD disc” or “Blue Ray disc”) is placed and service commands for the playback device (DVD player, or Blue Ray player, or DVD + Blue Ray player) are encoded.

On track 5, a program for controlling the movement of the optical heads 1 is recorded, and on additional track 6, either an additional program can be recorded that provides a change in the direction of mutual movement of the cleaning body 3 and the optical heads 1, or a change in this direction is provided for by the program located on track 5, and additional track 6 is the address label, which is associated with the corresponding fragment of the program on the track. The optical head 1 includes a lens 7 with a protective rim 8.

In figure 3, the position 9 denotes the dirt remaining between the lens 7 and the rim 8 when the optical head 1 moves in only one direction - from the center of the cleaning CD 2 to its periphery.

The device operates as follows.

Cleaning CD 2 is inserted into a DVD, or Blue Ray, or DVD + Blue Ray player. There is an automatic reading of information from track zero 4, while determining the type of disk and the possibility of its use in this player. Next, information is read from track 5 with the recording of the program for controlling the movement of optical heads; on the TV screen connected to the player, the image of the main menu of the cleaning CD 2 appears. Using the player's remote control, the cleaning operation is selected from the menu. When this happens, the optical head 1 reads information in the direction of the arrow "A" (Fig.2, 3). The lens 7 of the optical head 1 interacts with the fibers of the cleaning organ 3, which, when the head 1 moves along the arrow “A”, almost completely remove dirt from the surface of the lens, with the exception of the space between the protective rim 8 and the left edge (as shown in FIG. 3) lenses 7. The movement of the optical head 1 in the direction of the arrow "A" continues until its additional track 6 is reached, after which the head 1 begins to move in the opposite direction along the arrow "B". The command to change the direction of movement of the head 1 can be recorded on track 6 or on track 5 with reference to track 6; the last on track 6 contains the corresponding address label. When the optical head moves along arrow "B", the entire surface of the lens 7 is cleaned of contaminants 9. This process can be repeated several times to improve the quality of cleaning of the optical head 1.

A device for cleaning optical heads for reading information from DVDs or Blue Ray CDs is manufactured in the factory using conventional equipment and known materials, which, according to the applicant, determines its compliance with the criterion of “industrial applicability”.

Claims (1)

A device for cleaning optical heads for reading information from DVDs or Blue Ray CDs, including a cleaning CD, equipped with one or more cleaning bodies, having an internal, null track containing input information about the cleaning CD, a track with the recording of the motion control program optical heads for reading information from DVD or Blue Ray CDs during the cleaning process and an additional track, characterized in that one or more cleaning bodies are located between the track with the recording of the control program I move the optical heads to read information from a DVD or Blue Ray CD in the cleaning process and an additional track.

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