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Device, method and mobile terminal for reading and writing cards

A card and card slot technology, applied in the field of circuits, can solve problems such as burning cards

Active Publication Date: 2019-06-14
MEIZU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, since the power supply pin of the outer card slot receives a high-level power supply signal when the mobile terminal is turned on, the card in the inner card slot may touch the outer card tray during the process of inserting or pulling out the card tray. The power supply pin of the card slot, causing the card to be burned

Method used

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  • Device, method and mobile terminal for reading and writing cards
  • Device, method and mobile terminal for reading and writing cards
  • Device, method and mobile terminal for reading and writing cards

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A device for reading and writing cards provided in Embodiment 1 of the present invention, comprising:

[0036] A card tray, the card tray includes a first card slot and a second card slot; wherein, the card tray is sequentially provided with a first card slot and a second card slot along the direction in which the card tray is inserted into the device, wherein , the second card slot is arranged parallel to the first card slot;

[0037] The control module is used to supply power to the power supply pin of the first card slot when it detects that there is a card in the first card slot after the card tray is fully inserted into the device; When there is a card in the first card slot, stop supplying power to the power supply pin of the first card slot.

[0038] Specifically, when the first card slot is fully inserted into the device, the power supply pin of the first card slot is connected to the power supply pin of the control module, and the power supply pin of the first...

Embodiment 2

[0041] see Figure 3a and Figure 3b , The device for reading and writing cards provided by Embodiment 2 of the present invention includes: a card holder 300; a control module 310; a power supply module 320; an interrupt signal generating module 330;

[0042] Wherein, the card tray 300 is provided with a first card slot and a second card slot in sequence along the direction in which the card carrier is inserted into the device, wherein the second card slot is arranged parallel to the first card slot; Wherein, the positional relationship between the first draw-in slot and the second draw-in slot is: with the card support handle part 111 (see figure 1 Cato shown in ) nearest to the outside, farthest to the inside. Or, when the card tray is inserted into the terminal / device, the second card slot enters into the terminal / device preferentially.

[0043]Wherein, the control module 310 includes: an interrupt pin 311 for receiving an interrupt signal indicating whether there is a c...

Embodiment 3

[0054] A mobile terminal provided by Embodiment 3 of the present invention includes: the above device for reading and writing cards.

[0055] Wherein, if the mobile terminal is in the open state, the device for reading and writing the card is in the open state, unless the mobile terminal is closed from the software level for reading and writing the card, that is, the level of the power signal is 0 volts.

[0056] In the embodiment of the present invention, after the card holder is fully inserted into the device for reading and writing cards, the shrapnel in the device will be connected with the card holder to form a closed loop. At this time, the control module will detect whether there is a card in the first card slot. If there is no card in the first card slot, the power supply to the power supply pin of the first card slot is stopped, so when the card tray is pulled out, it is avoided that the card in the second card slot touches the power supply pin of the first card slot a...

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PUM

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Abstract

The invention provides a device and method for reading and writing cards as well as a mobile terminal, which can avoid the problem of burning the cards in the process of pulling and inserting card trays. The device for reading and writing the cards comprises a card tray and a control module, wherein the card tray comprises a first card slot and a second card slot, and the second card slot is arranged in parallel to the inner side of the first card slot; and the control module is used for supplying power to power supply pins of the first card slot when detecting that the card exists in the first card slot after the card tray is fully inserted into the device, and is used for stopping supplying power to the power supply pins of the first card slot when detecting that no card exists in the first card slot.

Description

technical field [0001] The invention relates to the technical field of circuits, in particular to a card reading and writing device, method and mobile terminal. Background technique [0002] Nowadays, more and more mobile terminal equipment adopts the "and or card" device for reading and writing cards, such as figure 1 As shown, the card tray 110 of the mobile terminal adopting this device has two card slots, namely the first card slot 120 and the second card slot 130, which can support two SIM (Subscriber Identification Module, customer identification module) cards, or One SIM card, one SD card (Secure Digital Memory, secure digital memory). [0003] However, when the mobile terminal is turned on, the power supply pins of the first card slot 120 and the second card slot 130 are both high-level power supply signals. When the terminal is pulled out, the SIM card loaded on the second card slot may touch the corresponding power supply pin of the first card slot 120, causing t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/3818H04M1/02
CPCH04B1/3818H04M1/026H04M1/0277
Inventor 尹斌斌
Owner MEIZU TECH CO LTD