Emi Shielding Or Electrical Grounding Patents (Class 720/650)
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Patent number: 11622463Abstract: A chassis includes a cage. The cage includes a body, a clamping member, and a buckling member. The body includes a first sliding portion, a fastening portion, and an accommodating area. The accommodating area includes a guide rail portion. The guide rail portion and the first sliding portion are disposed on two sides of the accommodating area, respectively. The fastening portion is disposed on one side of the accommodating area away from the guide rail portion. The clamping member is slidably disposed on the first sliding portion. The buckling member is disposed on the clamping member. The buckling member is adapted to be in contact with the fastening portion.Type: GrantFiled: January 25, 2021Date of Patent: April 4, 2023Assignee: WISTRON CORPORATIONInventors: Ying Li, Yong-Liang Zheng
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Patent number: 9356322Abstract: A rechargeable battery pack configured to prevent a frame from being damaged due to external impact forces while insulating a protection circuit module from short circuit is described. In an exemplary embodiment, the rechargeable battery pack may include a plurality of unit cells made up of a rechargeable battery connected to a frame which accommodates and supports the unit cells and having a loading portion sandwiched between the unit cells. The rechargeable battery pack may further comprise an electrically insulating holder connected to a loading portion, and a protection circuit module electrically connected to the unit cells and installed into the holder.Type: GrantFiled: November 20, 2013Date of Patent: May 31, 2016Assignee: Samsung SDI Co., Ltd.Inventors: Kyung-Ho Park, Seok Koh
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Patent number: 9027040Abstract: Provided is an optical disc drive that may discharge static electricity externally. The optical disc drive may include a step motor that is configured to move an optical pickup back and forth and a cover disposed below the optical pickup. In one aspect, the cover includes an electrostatic discharge mechanism for moving static electricity generated on the step motor through the cover.Type: GrantFiled: December 2, 2013Date of Patent: May 5, 2015Assignee: Toshiba Samsung Storage Technology Korea CorporationInventors: Jung Sug Ko, Sang Yun Baek, Cheol Woong Ahn, Jae Gil Yu, Un Jin Choi
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Patent number: 8964408Abstract: An electromagnetic interference (EMI) absorber includes an EMI conductive sheet having first and second portions, the first portion absorbing EMI from an EMI absorption target and the second portion for conducting EMI to an EMI discharge target, and an elastic member covered by the first portion.Type: GrantFiled: October 8, 2008Date of Patent: February 24, 2015Assignee: Samsung Display Co., Ltd.Inventors: Sung-Kyu Lee, Ju-Geun Kim
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Patent number: 8955000Abstract: A disc drive that includes: a housing configured to receive a tray, a pickup mounted on the tray; a connector installed on the housing for outputting signals obtained from the optical pickup; a ribbon cable that includes a first end which is connected to the connector, including a plurality of wire layers, and a part installed adjacent to a side of a body of the housing; and at least one penetration hole formed in a side of the body of the housing so as to reduce a capacitive coupling between the ribbon cable and the body of the housing.Type: GrantFiled: November 14, 2011Date of Patent: February 10, 2015Assignee: Toshiba Samsung Storage Technology Korea CorporationInventors: Sang-hun Kim, Jung-hwan Na, Sang-hum Cho
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Publication number: 20140223455Abstract: Provided is an optical disc drive that may discharge static electricity externally. The optical disc drive may include a step motor that is configured to move an optical pickup back and forth and a cover disposed below the optical pickup. In one aspect, the cover includes an electrostatic discharge mechanism for moving static electricity generated on the step motor through the cover.Type: ApplicationFiled: December 2, 2013Publication date: August 7, 2014Inventors: Jung Sug KO, Sang Yun BAEK, Cheol Woong AHN, Jae Gil YU, Un Jin CHOI
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Patent number: 8760987Abstract: An optical disc drive device has a metallic exterior casing and an internal unit to be housed in the exterior casing. The internal unit further includes an optical pickup unit for performing recording or reproduction of information signals on an optical disc, and a printed wiring substrate on which a connector electrically connected to the optical pickup unit and serving for transmission and reception of electrical signals from and to external electronic equipment is mounted. The exterior casing has an opening for allowing the connector to be exposed outside, the printed wiring substrate has a ground pattern formed to surround the connector, and a fringe portion of the opening of the exterior casing and the ground pattern are in electrical contact with each other. Thus, radiation noise from around wiring lines contained in the optical disc drive device or the like is reduced.Type: GrantFiled: February 16, 2012Date of Patent: June 24, 2014Assignee: Panasonic CorporationInventors: Ryo Matsubara, Hideto Soga, Tomio Yamamoto, Yasuyuki Torii
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Patent number: 8545974Abstract: An electromagnetic interference shield generally includes a resilient core member and an electrically conductive layer. An adhesive bonds the electrically conductive layer to the resilient core member. The adhesive can include halogen-free flame retardant. The electrically conductive layer can be provided with halogen-free flame retardant and/or a corrosion inhibitor.Type: GrantFiled: June 2, 2005Date of Patent: October 1, 2013Assignee: Laird Technologies, Inc.Inventor: Larry D Creasy, Jr.
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Patent number: 8499315Abstract: An optical disc drive including a conductive plate provided on a front surface of a disc tray. The conductive plate includes a structure of a hook portion at two places on the right and left and a structure of a pressure bar spring on the side end, in which the conductive plate is fixed using hook holes provided on the disc tray and the pressure bar spring presses and grounds a cabinet with the disc tray loaded in the inside of the cabinet.Type: GrantFiled: October 18, 2011Date of Patent: July 30, 2013Assignees: Hitachi Consumer Electronics Co., Ltd., Hitachi-LG Data Storage, Inc.Inventors: Yoshiaki Yamauchi, Seiji Hamaie, Ikuo Nishida, Koji Matsumoto
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Patent number: 8359607Abstract: From an optical disc drive, internal static electricity has to be discharged to the outside to prevent breakage of electric components such as laser diodes. A grounding spring has been used to discharge static electricity from a unit mechanism to the enclosure of the optical disc drive but it is necessary to improve the reliability of the drive in consideration of the dimensional accuracy and workability of the spring. Thus the free end of a grounding spring having a cantilever structure is shaped like an arc and an end of the grounding spring has a curved structure. This configuration improves the dimensional accuracy and workability of the spring, so that the performance of the optical disc drive can be more reliable.Type: GrantFiled: April 13, 2011Date of Patent: January 22, 2013Assignees: Hitachi Consumer Electronics Co., Ltd., Hitachi-LG Data Storage, Inc.Inventors: Yoshiaki Yamauchi, Hideyuki Nagamine, Seiji Hamaie, Ikuo Nishida, Tatsuya Yamasaki
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Patent number: 8302115Abstract: A slim optical disk drive includes a lower housing, a tray, a protection plate, a flexible cable and an isolated part. The tray is supported by two slide rails for sliding in or sliding out of an opening of the lower housing. The protection plate is for covering a bottom of the tray. The flexible cable includes a plurality of wires. The flexible cable extends toward the opening and is stuck on the lower housing. A curved area is formed by bending the flexible cable near the opening. The flexible cable is accommodated between the protection plate and the lower housing when the tray is slid inside the lower housing. The isolated part is disposed on the protection plate. The isolated part is for shielding predetermined wires of the plurality of the wires to reduce noise of signals.Type: GrantFiled: September 17, 2010Date of Patent: October 30, 2012Assignee: Quanta Storage Inc.Inventors: Hsien-Chung Ou, Li-Li Yang, Jen-Chen Wu
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Publication number: 20120260272Abstract: Provided is a disk device, including: a disk mounting portion; a pickup slider; a shaft configured to move the pickup slider; a conductive wire that contacts or is arranged in the vicinity of at least the shaft; and a ground component arranged such that the ground component contacts the conductive wire.Type: ApplicationFiled: March 27, 2012Publication date: October 11, 2012Applicant: Sony CorporationInventors: Yuji SHIDA, Kenji KIUCHI
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Patent number: 8122463Abstract: An ESD protection device for a disk drive comprises a guide at two inner sides of the disk drive. A conductive sponge, one end contacting the case and the other protruding end contacting one of two conductive rails, is disposed in one guide. A hook is formed at one end, jutting out of the disk drive, of the rail. The rails support two sides of the tray, having electric elements disposed thereon and its bottom being covered by a conductive traverse cover, sliding. A conductive elastic stopper disposed at the bottom tray has an indentation formed at the front end to position the hook on the indentation's moving path, a contact part bent to electronically connect to the cover next to the indentation, and a sliding part formed at the rear end by protruding upwards to electronically connected to the rail, to electronically connect to the cover and the rail.Type: GrantFiled: March 14, 2008Date of Patent: February 21, 2012Assignee: Quanta Storage Inc.Inventors: Li-Li Yang, Hsien-Chung Ou, Chen-Fu Chang
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Patent number: 8004791Abstract: A novel information storage device is disclosed and claimed. The information storage device includes a disk drive, a disk drive printed circuit board, and a first conductive shield over the disk drive printed circuit board and electrically coupled to the disk drive. The information storage device also includes a bridge controller printed circuit board and a second conductive shield over and electrically coupled to the bridge controller printed circuit board. The first and second conductive shields are in direct contact with each other. A disk drive interface connector electrically couples the bridge controller printed circuit board with the disk drive printed circuit board. A third conductive shield is attached to the disk drive interface connector and is in direct contact with both the first and second conductive shields.Type: GrantFiled: February 22, 2008Date of Patent: August 23, 2011Assignee: Western Digital Technologies, Inc.Inventors: Wally Szeremeta, Bruce A. Cariker
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Patent number: 7966629Abstract: An optical disc device includes a conductive member of a bezel assembly with openings formed by a plurality of parting lines, and gaskets are attached to the upper and lower sides of the conductive member using conductive adhesion bond.Type: GrantFiled: April 28, 2006Date of Patent: June 21, 2011Assignee: Toshiba Samsung Storage Technology CorporationInventors: Mitsuhiro Iwama, Takashi Ishii, Kunio Omi, Tsuneo Suzuki, Kouzou Ohno
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Patent number: 7716693Abstract: An optical disc drive includes a chassis assembly formed of metal and grounded, a tray supporting an optical disc and installed capable of sliding in and out of the chassis assembly, a cover-deck formed of metal and attached on a lower surface of the tray, an eject switch provided on a front surface of the tray to unlock the tray which is inserted in the chassis assembly and locked therein, an eject button provided in front of the tray to press the eject switch, a bracket formed of metal, provided between the eject switch and the eject button, and having a lead formed at one end portion thereof and contacting the cover-deck, and a static electricity discharge wire electrically connecting the cover-deck and the chassis assembly, wherein static electricity generated when the eject button is pressed sequentially flows through the bracket, the cover-deck, and the chassis assembly, and flows out to ground.Type: GrantFiled: March 4, 2005Date of Patent: May 11, 2010Assignee: Samsung Electronics Co., LtdInventors: Cheol-woong Ahn, Hag-ryeol Kim
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Patent number: 7618148Abstract: A projector apparatus has an electrically conductive housing that includes a lower housing part and an upper housing part coupled to the lower housing part for covering the lower housing part, an internal projector module mounted in the housing, a first grounding component provided between the internal projector module and the upper housing part so as to establish a first grounding path between the internal projector module and the housing, and a second grounding component provided between the internal projector module and the lower housing part so as to establish a second grounding path between the internal projector module and the housing.Type: GrantFiled: June 23, 2006Date of Patent: November 17, 2009Assignee: Coretronic CorporationInventors: Chi-Yu Meng, Chin-Long Tien, Jung-Chi Chen, Ying-Yuan Shen
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Patent number: 7603680Abstract: An electronic apparatus is provided with a housing having a receptacle, a disk drive removably stored in the receptacle, and a grounding metal member attached to the disk drive. The disk drive has a depressed section, and this depressed section is exposed to the receptacle when the disk drive is stored in the receptacle. The grounding metal member is located in the depressed section and includes a first conduction portion. The receptacle of the housing has a second conduction portion. When the disk drive is stored in the receptacle, the second conduction portion comes into contact with the first conduction portion of the grounding metal member, thereby providing ground-connection between the disk drive and the housing.Type: GrantFiled: November 25, 2008Date of Patent: October 13, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Hiroyuki Minaguchi, Nobuyasu Tajima, Masanori Sato, Hidemi Itakura, Takayuki Arisaka
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Publication number: 20090249377Abstract: A CD-Audio System includes a CD-module and a host unit. The CD-module reads audio data from a disc, checks the audio data for errors, and provides the checked audio data to the host unit at greater than 1 times CD audio rate. The host unit stores the received audio data in an electronic shock protection memory included in the host unit. When the CD-module determines an error in the audio data, the CD-module notifies the host unit of the position in the audio data of the error and when notified of a position in the audio data of an error, the host unit replaces stored audio data at that position and all subsequently already received data with retransmitted audio data. Then the host outputs only validated audio data via speakers.Type: ApplicationFiled: March 31, 2008Publication date: October 1, 2009Inventor: Martin Leist
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Patent number: 7577967Abstract: A flexible printed circuit for electrically connecting a disk tray to a chassis of an optical disk drive has a base layer, a copper layer, and a cover layer. The copper layer is attached to the base layer by a first adhesive layer, and has a plurality of separate electrical wires and a ground area. The cover layer has a cutout area corresponding to the ground area, and is attached to the copper layer by a second adhesive layer. A third adhesive layer is electrically conductive and used for attaching the cover layer to the chassis of the optical disk drive. Wherein the third adhesive layer is electrically connected to the ground area of the copper layer through the cutout area, the static charges accumulated on the copper layer will be discharged to the chassis.Type: GrantFiled: August 11, 2004Date of Patent: August 18, 2009Assignee: Lite-On It Corp.Inventors: Szu-Yun Li, Shih-Lin Yeh, Jui-Nan Chuang
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Patent number: 7542231Abstract: A disc drive has actuator servo-controls and signal processing electronics positioned on, and electrically connected to, a flex printed circuit board positioned on a top surface of a base along with the actuator assembly and the spindle motor of the disc drive. A power combo chip is also positioned on the flex printed circuit board that is positioned on the top surface of the base. A top cover is attached to the base to form an enclosed space. The actuator assembly and the spindle motor are within the enclosed space and the actuator servo-controls and signal processing electronics are outside the enclosed space.Type: GrantFiled: June 24, 2003Date of Patent: June 2, 2009Assignee: Seagate TechnologyInventors: William Leon Rugg, Todd Warren Kube
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Patent number: 7500254Abstract: An electronic apparatus is provided with a housing having a receptacle, a disk drive removably stored in the receptacle, and a grounding metal member attached to the disk drive. The disk drive has a depressed section, and this depressed section is exposed to the receptacle when the disk drive is stored in the receptacle. The grounding metal member is located in the depressed section and includes a first conduction portion. The receptacle of the housing has a second conduction portion. When the disk drive is stored in the receptacle, the second conduction portion comes into contact with the first conduction portion of the grounding metal member, thereby providing ground-connection between the disk drive and the housing.Type: GrantFiled: March 22, 2004Date of Patent: March 3, 2009Assignee: Kabushiki Kaisha ToshibaInventors: Hiroyuki Minaguchi, Nobuyasu Tajima, Masanori Sato, Hidemi Itakura, Takayuki Arisaka
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Patent number: 7495317Abstract: A semiconductor device comprises at the wafer level one or more ferrite structures adapted to dampen high frequency noise potentially apparent at signal lines and termination points within the semiconductor device. Related methods of forming said ferrite structures are also disclosed.Type: GrantFiled: March 24, 2006Date of Patent: February 24, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Eun-Seok Song, Un-Byoung Kang, Si-Hoon Lee
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Publication number: 20080172684Abstract: An ESD protection device for a disk drive comprises a guide at two inner sides of the disk drive. A conductive sponge, one end contacting the case and the other protruding end contacting one of two conductive rails, is disposed in one guide. A hook is formed at one end, jutting out of the disk drive, of the rail. The rails support two sides of the tray, having electric elements disposed thereon and its bottom being covered by a conductive traverse cover, sliding. A conductive elastic stopper disposed at the bottom tray has an indentation formed at the front end to position the hook on the indentation's moving path, a contact part bent to electronically connect to the cover next to the indentation, and a sliding part formed at the rear end by protruding upwards to electronically connected to the rail, to electronically connect to the cover and the rail.Type: ApplicationFiled: March 14, 2008Publication date: July 17, 2008Applicant: QUANTA STORAGE INC.Inventors: Li-Li Yang, Hsien-Chung Ou, Chen-Fu Chang
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Patent number: 7401343Abstract: A main printed board having an electronic part contiguous to an apparatus main body at inside of a cabinet made of a synthetic resin is arranged to be proximate to other side walls of a ceiling plate portion and a bottom plate portion, a static electricity preventing plate having a width wider than that of the main printed board is hung from the ceiling plate portion to be proximate to the other side walls opposedly to the main printed board, a lower end of the static electricity preventing plate is extended to a vicinity of the main printed board, projected portions are integrally projected from the ceiling plate portion 1a to be proximate to a rear portion of a tray contained at inside of the cabinet, and lower ends of the projected portions are positioned downward from an upper face of the tray.Type: GrantFiled: January 13, 2006Date of Patent: July 15, 2008Assignee: Funai Electric Co., Ltd.Inventor: Akira Muramatsu
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Patent number: 7392529Abstract: An optical disc drive includes an electro-conductive chassis, a tray, a bezel and an electro-conductive sheet. Wherein, the electro-conductive chassis has an opening portion. The tray is disposed inside the electro-conductive chassis for carrying an information storage medium and can move into and from the electro-conductive chassis, and the bezel is disposed at a front edge of the tray. In addition, the electro-conductive sheet is disposed between the front edge of the tray and the bezel, and substantively covers the opening portion of the electro-conductive chassis. As the tray stays inside the electro-conductive chassis, the electro-conductive sheet is in contact with the electro-conductive chassis. Consequently, the electro-conductive sheet is able to reduce the electromagnetic interference (EMI) generated during the operating of the optical disc drive. Further, the electromagnetic wave leakage damaging human health is also prevented.Type: GrantFiled: June 29, 2005Date of Patent: June 24, 2008Assignee: Lite-On It CorporationInventor: Chia-Hung Yen
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Patent number: 7363638Abstract: The present invention is a disk drive with an electrostatic discharge structure including a casing having a hollow space inside, and a tray with a spindle motor, which can freely insert into or pull out from the casing. A chassis covers the bottom of the tray and contacts the spindle motor. A bezel in the front of the tray has a hole to accommodate an eject button. A metal sheet is attached to the back of the bezel, surrounds the eject button, and connects with the chassis. A wire connects the spindle motor for grounding. The tray is able to discharge electrostatic charges whenever inserting into or pulling out from the casing.Type: GrantFiled: October 25, 2005Date of Patent: April 22, 2008Assignee: Quanta Storage Inc.Inventor: Wen-Kuan Peng
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Patent number: 7363637Abstract: The present invention is to provide an optical disk drive including a casing, a tray, a signal wire, and a conductive wire. The casing has a first electric device and a grounded conductor, and the tray has a second electric device and a base plate. The signal wire connects the first electric device and the second electric device. The conductive wire is a part of the signal wire to electrically connect the base plate and the conductor. When a user touches the tray, electrostatic charges of the user are grounded by the connection of the base plate and the conductor.Type: GrantFiled: September 23, 2005Date of Patent: April 22, 2008Assignee: Quanta Storage Inc.Inventor: Wen-Kuan Peng
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Patent number: 7334244Abstract: A flexible flat cable and a disk drive using the same are provided. The flexible flat cable is configured to suppress an electromagnetic interference (EMI) generated by a signal transmitted by it. The flexible flat cable includes a main body and a metal layer. The metal layer is disposed on the main body along the direction the signal is transmitted. The width of the metal layer along the direction, perpendicular to the direction the signal being transmitted, is smaller than the width of the main body.Type: GrantFiled: October 19, 2004Date of Patent: February 19, 2008Assignee: Benq CorporationInventors: Ching-Yi Wang, Chi-Cheng Lin
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Patent number: 7290271Abstract: An optical disk apparatus according to the invention comprises a housing, a tray retractably mounted in the housing, and a bezel 10 adapted to close an opening of the housing 2 when the tray is accommodated in the housing 2. An electrically conductive metallic member 15 is disposed in at least one of main flat portions in the bezel 10. When the tray is accommodated in the housing, at least one surface of the conductive metallic member 15 is in contact with the housing.Type: GrantFiled: July 6, 2005Date of Patent: October 30, 2007Assignee: Matsushita Electric Industrial Co., LtdInventors: Mitsuhiro Hamada, Masanari Esaki, Yuichi Uchikawa
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Patent number: 7254820Abstract: A player for a media unit. The player includes a front plate formed of metal and having an opening configured to receive a media unit. The player also includes a cover mounted over the opening and having a slit. The slit is aligned with the opening and configured to allow the media unit to pass through the cover and enter the opening. The cover includes an electrical conductor that contacts the front plate and is in electrostatic communication with the slit. The conductor conducts electrostatic charge from the media unit to the front plate as the media unit passes through the slit. The media unit may be a CD, DVD, memory stick, minidisc or the like.Type: GrantFiled: February 8, 2005Date of Patent: August 7, 2007Assignee: Delphi Technologies, Inc.Inventors: Brian L. Bickford, Dwight A. Howard, David J. Clute, Brian R. Newlon
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Patent number: 7137131Abstract: An optical disc drive including a case in which a circuit board is provided, a tray on which an optical disc is mounted and is installed in the case capable of sliding in and out of the case, a main base coupled to the tray wherein the main base includes, a spindle motor to rotate the optical disc, a bracket to support the spindle motor, an optical pickup to access the optical disc, and a driving motor to drive the optical pickup. The optical disc drive also includes a flexible printed circuit electrically connecting the circuit board and the tray, on which a ground pattern is formed, and a base cover coupled to the main base to protect the main base. An exposure portion of the ground pattern is formed on part of the flexible printed circuit, and a contact portion electrically contacting the exposure portion of the ground pattern is formed on the base cover so that static electricity applied to the base cover is grounded.Type: GrantFiled: December 1, 2003Date of Patent: November 14, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Hee-Deuk Park, Joong hun Yeom
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Patent number: 7134128Abstract: To simplify incidental operations relating to setting of an earth plate for discharging static electricity of a disk drive for driving an optical disk, reduce the processing cost accompanying assembling of a bezel, and improve the versatility of the disk drive so that the bezel can be manufactured with a simple configuration at a low cost in order to set the bezel to the front end face of the disk drive through post-mount processing, and moreover to make it possible to supply a disk drive to unspecified users at a stable quality without lacking in specifications required to a disk tray for keeping a desired performance. In the case of a disk drive for loading or unloading a disk tray 1 to which a recording medium is set by moving the disk tray 1 forward or backward in a chassis case 10, an earth plate 9 for discharging static electricity generated at a bezel portion 8 is set so as to cover an essential portion of the front end face of the disk tray 1 at the disk tray 1 side.Type: GrantFiled: October 30, 2003Date of Patent: November 7, 2006Assignee: Teac CorporationInventors: Nobuki Matsui, Takashi Watanabe
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Patent number: 6947355Abstract: An optical disk drive includes a case, a tray which is slidably provided to the case and receives an optical disk, and a ground member which is electrically connected to the case and contacts one side of the optical disk as the tray slides in or out of the case. In the optical disk drive, by removing a static electricity remaining on the optical disk through the ground member, where the tray is loaded, foreign materials such as dust can be prevented from adhering to the optical disk. Accordingly, a stable and accurate optical signal processing can be guaranteed, thereby improving the reliability of the optical disk drive and the optical disk.Type: GrantFiled: April 18, 2003Date of Patent: September 20, 2005Assignee: Samsung Electronics, Co., Ltd.Inventors: Soon-kyo Hong, Cheol-woong Ahn, Myung-ryul Choi, Jae-won Ha
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Publication number: 20040163094Abstract: To simplify incidental operations relating to setting of an earth plate for discharging static electricity of a disk drive for driving an optical disk, reduce the processing cost accompanying assembling of a bezel, and improve the versatility of the disk drive so that the bezel can be manufactured with a simple configuration at a low cost in order to set the bezel to the front end face of the disk drive through post-mount processing, and moreover to make it possible to supply a disk drive to unspecified users at a stable quality without lacking in specifications required to a disk tray for keeping a desired performance. In the case of a disk drive for loading or unloading a disk tray 1 to which a recording medium is set by moving the disk tray 1 forward or backward in a chassis case 10, an earth plate 9 for discharging static electricity generated at a bezel portion 8 is set so as to cover an essential portion of the front end face of the disk tray 1 at the disk tray 1 side.Type: ApplicationFiled: October 30, 2003Publication date: August 19, 2004Inventors: Nobuki Matsui, Takashi Watanabe
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Publication number: 20040111732Abstract: An optical disc drive including a case in which a circuit board is provided, a tray on which an optical disc is mounted and is installed in the case capable of sliding in and out of the case, a main base coupled to the tray wherein the main base includes, a spindle motor to rotate the optical disc, a bracket to support the spindle motor, an optical pickup to access the optical disc, and a driving motor to drive the optical pickup. The optical disc drive also includes a flexible printed circuit electrically connecting the circuit board and the tray, on which a ground pattern is formed, and a base cover coupled to the main base to protect the main base. An exposure portion of the ground pattern is formed on part of the flexible printed circuit, and a contact portion electrically contacting the exposure portion of the ground pattern is formed on the base cover so that static electricity applied to the base cover is grounded.Type: ApplicationFiled: December 1, 2003Publication date: June 10, 2004Applicant: Samsung Electronics, Co., Ltd.Inventors: Hee-Deuk Park, Joong Hun Yeom