Double interface SD flash memory card
DC
First Claim
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1. A double interface flash memory card, which has a first transmission interface and a circuit board with a microprocessor and a plurality of flash memory thereon, comprising:
- a first bus interface circuit especially for a system interface circuit of the flash memory card being able to perform signal transmission;
a second bus interface circuit for the other information apparatuses, which are different from the flash memory card, being able to perform signal transmission; and
an interface detection and switching circuit, electrically connecting with the first transmission interface, the first bus interface circuit and the second bus interface circuit for detecting if there is an initializing signal generated from the system interface circuit and switching to the first bus interface circuit or the second bus interface circuit according to the initializing signal being generated or not generated;
wherein, the microprocessor switches the status thereof to a working mode and a suitable system interface circuit mode is started according to what type of the system interface circuit being detected by the interface detection and switching circuit so that the microprocessor can detect, determine and support a connection action signal automatically;
when either the first transmission interface or the second transmission interface offers the action signal at the transmission end thereof and, in the mean time, the microprocessor switches the circuit and the related electronic elements on the circuit board to support data transmission action of the first transmission interface or the second transmission interface in the flash memories.
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Abstract
A double interface SD flash memory card includes a SD flash memory card and a USB adaptor. The SD flash memory card has a standard SD card interface and a circuit board, which has a microprocessor and flash memories. The USB adapter has at least a SD interface socket and a USB plug. The SD interface socket can be inserted with a SD flash memory card and the USB plug can be connected to other information devices. The double interface SD flash memory card includes a SD bus interface circuit for the SD flash card, a USB bus interface circuit for a system end, and an interface detection and switching circuit detect if there is an initialized signal from the system interface and switch to the SD bus interface circuit or the USB bus interface circuit based on result of the detection. The microprocessor can detect, identify, and support connecting signal of SD interface or USB interface automatically. When a signal is sent from the SD card interface or the USB card interface, the microprocessor will switch the circuit and relevant electronic elements in the circuit board to support the SD card or the USB card to access the data in the flash memories in the card.
16 Citations
20 Claims
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1. A double interface flash memory card, which has a first transmission interface and a circuit board with a microprocessor and a plurality of flash memory thereon, comprising:
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a first bus interface circuit especially for a system interface circuit of the flash memory card being able to perform signal transmission; a second bus interface circuit for the other information apparatuses, which are different from the flash memory card, being able to perform signal transmission; and an interface detection and switching circuit, electrically connecting with the first transmission interface, the first bus interface circuit and the second bus interface circuit for detecting if there is an initializing signal generated from the system interface circuit and switching to the first bus interface circuit or the second bus interface circuit according to the initializing signal being generated or not generated; wherein, the microprocessor switches the status thereof to a working mode and a suitable system interface circuit mode is started according to what type of the system interface circuit being detected by the interface detection and switching circuit so that the microprocessor can detect, determine and support a connection action signal automatically;
when either the first transmission interface or the second transmission interface offers the action signal at the transmission end thereof and, in the mean time, the microprocessor switches the circuit and the related electronic elements on the circuit board to support data transmission action of the first transmission interface or the second transmission interface in the flash memories. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A double interface SD flash memory card combination, comprising:
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a double interface SD flash memory card; and a USB adapter; wherein the double interface SD flash memory card further comprises; a first transmission interface; and a circuit board, providing a microprocessor and a plurality of flash memories, the microprocessor having at least a built-in first bus interface circuit; and
the USB adaptor having at least a SD interface socket for being inserted with the double interface SD flash memory card and has a second transmission interface for being used with other information apparatus;wherein the first bus interface circuit is built in the double interface SD flash memory card especially for a system interface circuit of the flash memory card being able to perform signal transmission;
a second bus interface circuit is built in the double interface SD flash memory card for the other information apparatuses, which are different from the flash memory card, being able to perform signal transmission; and
an interface detection and switching circuit is built in the double interface SD flash memory card for detecting if there is an initializing signal generated from the system interface circuit and switching to the first bus interface circuit or the second bus interface circuit according to the initializing signal being generated or not;whereby, the microprocessor can detect, determine and support a connection action signal automatically;
when either the first transmission interface or the second transmission interface offers the action signal at the transmission end thereof and, in the mean time, the microprocessor switches the circuit and the related electronic elements on the circuit board to support data transmission action of the first transmission interface or the second transmission interface in the flash memories.- View Dependent Claims (9, 10, 11, 12, 13)
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14. A double interface flash memory card, which has a first transmission interface and a circuit board with microprocessor and a plurality of flash memories, at least comprises:
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a first bus interface circuit especially for a system interface circuit of the flash memory card being able to perform signal transmission; a second bus interface circuit for the other information apparatuses, which are different from the flash memory card, being able to perform signal transmission; a plurality of common pins, being formed as common connecting ends for signal transmission between the double interface flash memory card and a system interface circuit and the information apparatuses; and an interface detection and switching circuit, electrically connecting with the first transmission interface, the first bus interface circuit and the second bus interface circuit for detecting if there is an initializing signal generated from the system interface circuit and switching the common pins to the first bus interface circuit or the second bus interface circuit according to the initializing signal being generated or not generated; wherein, the microprocessor switches the status thereof to a working mode and a suitable system interface circuit mode is started according to what type of the system interface circuit being detected by the interface detection and switching circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification
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Litigation Data
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Current AssigneeUSB Technologies, LLC (2S Ventures, LLC)
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Original AssigneeCarry Computer Engineering Co Ltd
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InventorsLiu, Wen-Tsung, Chen, Chia-Li
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Primary Examiner(s)CHEN, ALAN S
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Application NumberUS10/216,611Publication NumberTime in Patent Office2,976 DaysField of Search710/72, 710/2, 710/74, 710/8, 710/62US Class Current710/62CPC Class CodesG06K 19/077 Constructional details, e.g...G06K 19/07732 the record carrier having a...
