Flash Drive With Spring-Loaded Swivel Connector

• US 20100075517A1
• Filed: 12/01/2009
• Published: 03/25/2010
• Est. Priority Date: 10/30/2007
• Status: Active Grant

• Current Assignee: Super Talent Technology, Corporation
• Original Assignee: Super Talent Electronics, Inc.
• Inventors: Ni, Jim Chin-Nan, Ma, Abraham C.
• Granted Patent: US 8,241,047 B2
• Time in Patent Office: Days
• US Class Current: 439/131
• CPC Class Codes: G06K 19/07732 the record carrier having a housing or construction similar to well-known portable memory devices, such as SD cards, USB or memory sticks housings for electrical equipment in general, see H05K5/02
• CPC Class Codes: G06K 19/07743 External electrical contacts
• CPC Class Codes: G11C 11/5621 using charge storage in a floating gate
• CPC Class Codes: G11C 16/0408 comprising cells containing floating gate transistors G11C16/0483, G11C16/0491 take precedence
• CPC Class Codes: G11C 16/10 Programming or data input circuits
• CPC Class Codes: G11C 2211/5641 Multilevel memory having cells with different number of storage levels

Abstract

A swivel-type computer peripheral device includes a housing and a swivel rack assembly that swivels relative to the housing between a retracted position, in which a PCBA having a plug connector mounted on the swivel rack assembly is disposed inside the housing, and a deployed position, in which the swivel rack assembly is rotated outside of the housing such that the plug connector is positioned for insertion into a host computer socket. A torsion spring is connected between the housing and the swivel rack assembly and arranged to bias the swivel rack assembly either into the deployed position or into the retracted position. A locking mechanism controlled by a push button or another actuating mechanism is used to selectively lock the swinging rack in a retracted position and a deployed position.

Claims

1. A swivel-type portable computer peripheral apparatus comprising:

an elongated housing defining an elongated side opening extending between a rear end portion and a front end portion;

a swivel rack assembly comprising;

a swivel arm having a fixed end pivotably connected to the front end portion of the housing, a free end, and a central section extending from the fixed end to the free end;

a printed circuit board assembly (PCBA) mounted on the central section of the swivel arm, the PCBA including at least one MLC based flash memory device mounted thereon; and

a plug connector fixedly connected to the free end of the swivel arm and electronically connected to the PCBA;

a locking mechanism for securing the plug connector in one of a first position, in which the swivel arm is disposed in the elongated side opening such that the plug connector is positioned inside of the housing, and a second position in which the swivel arm is disposed out of the elongated side opening such that the plug connector is exposed outside of the housing; and

a resilient torsion member connected to at least one of the elongated housing and the swivel rack assembly for biasing, upon manual deactivation of the locking mechanism, the swivel rack assembly to rotate relative to the housing such that the plug connector is moved between the first position and the second position.

2. The portable computer peripheral apparatus according to claim 1, wherein the resilient torsion member comprises a coil spring having a first end connected to the swivel arm a second end disposed inside the housing.

3. The portable computer peripheral apparatus according to claim 2, wherein the coil spring is arranged such that the resilient torsion member stores potential energy when the plug connector is in the first position, whereby manual deactivation of the locking mechanism causes the coil spring to rotate the swivel arm relative to the housing until the plug connector is in the second position.

4. The portable computer peripheral apparatus according to claim 2, wherein the coil spring is arranged such that the resilient torsion member stores potential energy when the plug connector is in the second position, whereby manual deactivation of the locking mechanism causes the coil spring to rotate the swivel arm relative to the housing until the plug connector is in the first position.

5. The portable computer peripheral apparatus according to claim 1, wherein the elongated housing comprises:

a lower housing portion including a lower wall extending between a first open side wall portion and a first closed side wall portion, and between a first rear end wall section and a first front end wall section, the lower housing portion also including a cylindrical mounting structure integrally molded onto the lower wall adjacent to the first front wall section; and

an upper housing portion includes an upper wall that extends between a second open side wall portion and a second closed side wall portion, and between a second rear end wall section and a second end front wall section,

wherein the upper housing portion is mounted on the lower housing portion such that the first and second open side wall portions are spaced apart to form the elongated side opening, the first and second closed side wall portions combine to form a closed wall structure extending along a closed side of the apparatus, the first and second rear end wall sections form a closed wall structure covering a rear end of the apparatus, and

wherein the fixed end of the swivel arm is pivotably mounted on the cylindrical mounting structure.

6. The portable computer peripheral apparatus according to claim 5,

wherein the upper housing portion also includes an actuator opening defined in the upper wall adjacent to the second front wall section, and

wherein the locking mechanism comprises:

an actuating structure having a hollow cylindrical body including a push-button structure disposed on an upper end thereof and locking tabs extending outwardly from a lower end thereof, and

a coil-type actuating spring disposed inside the hollow cylindrical body,

wherein the actuating structure is mounted in the housing such that the push-button structure extends through the actuator opening and the coil-type actuating spring biases the actuating structure toward the upper housing portion such that the locking tabs disposed on the actuating structure engage locking slots locking slots defined on the fixed end of the swivel arm when the plug connector is in one of the first position and the second position.

7. The portable computer peripheral apparatus according to claim 6,

wherein the swivel arm includes a carrier tray having an upper tray portion and a lower tray portion that form a clip-like structure,

wherein said PCBA comprises a Chip-On-Board (COB) package mounted between the upper tray portion and the lower tray portion, and

wherein the plug connector comprises an elongated metal box-like structure mounted onto the swivel arm over the PCBA.

8. The portable computer peripheral apparatus according to claim 6,

wherein the swivel arm includes a bottom cover and a top cover that collectively form a casing,

wherein the PCBA includes a printed circuit board having said at least one MLC based flash memory device mounted thereon, the PCBA being mounted inside the casing formed by the top and bottom covers, and

wherein the plug connector comprises a metal plug shell attached to a front end of the printed circuit board and extending from a front end of the casing formed by the top and bottom covers.

9. The portable computer peripheral apparatus according to claim 6,

wherein the swivel aim includes a carrier tray having a lower tray portion and an upper tray portion that form a clip-like structure, and a narrow tray portion extending from the lower tray portion

wherein said PCBA comprises a Slim Printed Circuit Board Assembly (Slim PCBA) package including a printed circuit board (PCB) having a rear PCB section mounted between the upper tray portion and the lower tray portion, and a front PCB section extending from the rear PCB section, the front PCB section having a narrower width than the rear PCB section and being mounted on the narrow tray portion, and

wherein the plug connector comprises an elongated metal box-like structure including a rear plug section mounted over the rear PCB section, and a front plug section mounted over the front PCB section, the front plug section having a narrower width than the rear plug section.

10. The portable computer peripheral apparatus according to claim 5,

wherein the swivel arm includes an annular pivot ring having a top surface, and

wherein the locking mechanism comprises:

a guide structure including a guide groove and a V-shaped locking notch defined in the top surface,

a guide hook having a tail end slidably engaged in one of the guide groove and the V-shaped locking notch, and a head end fixedly connected to the housing,

wherein the guide hook is mounted in the housing such that the tail end is disposed in the V-shaped locking notch when the plug connector is in the first position, and the tail end is disposed in the guide groove when the plug connector is disposed between the first position and the second position.

11. The portable computer peripheral apparatus according to claim 10,

wherein the swivel arm includes a carrier tray having an upper tray portion and a lower tray portion that form a clip-like structure,

wherein said PCBA comprises a Chip-On-Board (COB) package mounted between the upper tray portion and the lower tray portion, and

wherein the plug connector comprises an elongated metal box-like structure mounted onto the swivel arm over the PCBA.

12. The portable computer peripheral apparatus according to claim 10,

wherein the swivel arm includes a bottom cover and a top cover that collectively form a casing,

wherein the PCBA includes a printed circuit board having said at least one MLC based flash memory device mounted thereon, the PCBA being mounted inside the casing formed by the top and bottom covers, and

wherein the plug connector comprises a metal plug shell attached to a front end of the printed circuit board and extending from a front end of the casing formed by the top and bottom covers.

13. The portable computer peripheral apparatus according to claim 10,

wherein the swivel arm includes a carrier tray having a lower tray portion and an upper tray portion that form a clip-like structure, and a narrow tray portion extending from the lower tray portion

wherein said PCBA comprises a Slim Printed Circuit Board Assembly (Slim PCBA) package including a printed circuit board (PCB) having a rear PCB section mounted between the upper tray portion and the lower tray portion, and a front PCB section extending from the rear PCB section, the front PCB section having a narrower width than the rear PCB section and being mounted on the narrow tray portion, and

wherein the plug connector comprises an elongated metal box-like structure including a rear plug section mounted over the rear PCB section, and a front plug section mounted over the front PCB section, the front plug section having a narrower width than the rear plug section.

14. The apparatus of claim 1, wherein said at least one electronic device disposed in a Slim Printed Circuit Board Assembly (Slim PCBA) package.

15. The apparatus of claim 1, wherein the plug connector comprises a Universal Serial Bus (USB) plug.

16. The apparatus of claim 1, wherein the at least one electronic device comprises

an input/output interface circuit, coupling to a processing unit, configured for receiving a logical sector address (LSA) along with a data transfer request from a host computing device, said processing unit is configured for extracting set, entry, page and sector numbers from the LSA with an indexing scheme;

wherein said processing unit further comprises a page buffer, an address correlation page usage memory (ACPUM), a partial logical-to-physical address and page usage information (PLTPPUI) tracking table, a wear leveling counter and bad block indicator (WL/BB) tracking table; and

a flash memory that includes a reserved area for a plurality of first physical blocks and a plurality of second physical blocks, the first physical blocks is referenced by a plurality of first special logical addresses while the second physical blocks by a plurality of second special logical addresses;

wherein the plurality of first physical blocks is configured for storing PLTPPUI and the plurality of second physical blocks for storing wear leveling and bad block indicator, ACPUM is configured to keep one set, corresponding to the set number, of PLTPPUI, the PLTPPUI tracking table is configured to hold correlation between the first special logical addresses and the first physical blocks and the WL/BB tracking table is configured to hold correlation between the second special logical addresses and the second physical blocks.

17. The apparatus of claim 1, wherein the at least one electronic device comprises:

at least one MLC based flash memory chip and a flash memory controller mounted thereon,

wherein the flash memory controller is configured for managing memory address of the flash memory device with following operations;

receiving, in the MLC based flash memory device, a logical sector address (LSA) along with a data transfer request from a host computing device;

extracting set, entry, page and sector numbers from the LSA with an indexing scheme;

loading a set, corresponding to the set number, of partial logical-to-physical address and page usage information (PLTPPUI) into an address correlation page usage memory (ACPUM);

reading a physical block number of flash memory of the MLC based flash memory device, the physical block number corresponds to the entry number in the ACPUM; and

when the data transfer request is a read request, reading data from a physical page corresponding to the page number of the physical block number of the flash memory to a page buffer, and sending a request data sector from the page buffer in accordance with the sector number;

when the data transfer request is a write request, writing page buffer contents to the physical page corresponding to the page number of the physical block number of the flash memory if the page buffer contents have been modified, writing a received data sector to the page buffer in accordance with the sector number and setting corresponding one of a plurality of sector update flags reflecting data sector just written to the page buffer.

18. The apparatus of claim 17, wherein said plug connector includes an interface circuit of one of Universal Serial Bus (USB), Secure Digital (SD), Micro SD, Multi-Media Card (MMC), Compact Flash (CF), Memory Stick (MS), PCI-Express, a Integrated Drive Electronics (IDE), Serial Advanced Technology Attachment (SATA), external SATA, Radio Frequency Identification (RFID), fiber channel and optical connection.