Dynamic absorber system for disc player

Abstract

A disc player includes a tray motion control module, a traverse module and a dynamic absorber. The tray motion control module supports the tray and, responsive to the instruction, performs in-out operation of the tray. The traverse module, via an isolator, connects to the tray motion control module. The dynamic absorber, via a damper, connects to the traverse module for absorbing the vibration caused by the rotational source on the traverse module.

Description

[0001] The present invention relates to the dynamic absorber for disc player such as CD disc player or DVD player.BACKGROUND OF INVENTION[0002] It is well known that a key to achieve a much higher operation speed of a disc player is to limit the vibration generated from the rotation source within the disc player during high speed operation. Typically, there are four categories as stated below with respect to the vibration absorber system of conventional disc player.[0003] As shown in one conventional approach of FIG. 1, a damper (K,C) is provided between the traverse module 11 and tray motion control module 13 to absorb the vibration generated thereof due to the external force F. The damper in the system functions to lower the vibration of the traverse module 11 and then stabilizes the disc read operation. However, since the resonance frequency of the design is much higher than the disc operating frequency, this design induces a much higher vibration on the casing of the disc player...

AI Technical Summary

Benefits of technology

[0008] A disc player is provided to include a tray motion control module, a traverse module and a dynamic absorber. The tray motion control module supports the tray and, responsive to the instruction, performs in-out operation of the tray. The traverse module, via an isolator, connects to the tray motion control module. The dynamic absorber, via a damper, connects to the traverse module for absorbing the vibration caused by the rotational source on the traverse module. The damper with high damping value transmits most vibration energy from traverse module to dynamic absorber to lower the traverse's vibration. The isolator keeps the vibration within the traverse module.

Problems solved by technology

However, since the resonance frequency of the design is much higher than the disc operating frequency, this design induces a much higher vibration on the casing of the disc player.

As a result, during high speed operation, the computer casing give rise to a substantial noise according to this approach.

However, since the resonance frequency of this design is much lower than the disc operating frequency, this design could not transmit the vibration of the transverse module 21 outwardly and experiences a higher vibration of the traverse module 21.

As a result, the disc read operation is not stable in some occasions and the disc speed must be lowered to achieve a stable read operation.

As the result, during high speed operation, not only the noise thereof is annoying to the user, but the resonance of the computer system's housing is undesiredly created.

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