Patent Application
20140306011
1. Field of the Invention
The present invention relates to a card reader and, more particularly, to a connector structure for multi-storage media, which has a plurality of contact arrangements in a housing for contacting any of a variety of flash memory cards.
2. Description of the Related Art
Flash memory cards bring convenience to information industries for storage of data. Generally, flash memory cards are portable data input devices which are electrically connected to personal computers or other electronic apparatus. By means of the use of a single piece of flash memory, the e data stored in the memory cards is transferred to the electronic apparatus by inserting and extracting the card from a connector mounted in the electronic apparatus as needed.
Flash memory cards, for example, include SD cards (Secure Digital Cards) and CF cards (Compact Flash cards Type I and Type). Since commercially available read write apparatus commonly have only one slot for the loading of a particular model of flash memory card. For reading a different model of memory card, the user may have to change the read write apparatus. Therefore, an card reader that accepts different flash memory cards is desired.
One of the objective of the disclosure is to provide a cost effective, a simple modification and easily implementable card reader for accessing multiple memory cards.
In one embodiment of the disclosure, the card reader includes: a shousing, a first contact arrangement, a second contact arrangement, a first controller chip and a second controller chip. The first and second contact arrangements are disposed in the housing. The first and second controller chips are respectively electrically connected to the first and second contact arrangements. Arrange such that when inserting a memory card into the card reader, a plurality of contacts of the memory card can contact with the first contact arrangement or the second contact arrangement, for independently accessing said memory card by the corresponding first controller chip or the second controller chip.
In the other embodiment, the card reader includes: a first card slot, a second card slot, a first contact arrangement, a second contact arrangement a first controller chip and a second controller chip. The first card slot is configured to receive a first memory card via a first opening, and the second card slot is configured to receive a second memory card via a second opening. The first contact arrangement is disposed in the first card slot for contacting contacts of the first memory card inserted in the first opening of the first card slot, and the second contact arrangement is disposed in the second card slot for contacting contacts of the second memory card inserted in the second opening of the second card slot. The first and second controller chips are respectively electrically connected to the first and second contact arrangements, for independently accessing the first and second memory card.
In the above-mentioned embodiment, the first and second card slots are arranged side by side in a vertical direction or in a horizontal direction.
In yet still the other embodiment, the card reader includes: a housing with an opening, a substrate, a first contact arrangement, a second contact arrangement, a first controller chip and a second controller chip. The substrate is disposed in the housing and has a first surface and a second surface opposite to the first surface, wherein a first card slot is defined by an upper wall of the housing and the first surface of the substrate, and a second card slot is defined by a lower wall of the housing and the first surface of the substrate. The first contact arrangement is disposed in the first card slot for contacting contacts of a first memory card inserted in the card slot via the opening, and the second contact arrangement is disposed in the second card slot for contacting contacts of a second memory card inserted in the card slot via the opening. The first and second controller chips are respectively electrically connected to the first and second contact arrangements, for independently accessing the first and second memory card.
In the above-mentioned embodiment, the first controller chip is disposed on the first surface of the substrate and the second controller chip is disposed on the second surface of the substrate.
In any one of the above-mentioned embodiments, the first controller chip comprises a first ground pin, and the second controller chip comprises a second ground pin, wherein the first ground pin and the second ground pin are electrically connected to the other one.
In any one of the above-mentioned embodiments, the first controller chip comprises a first power pin, and the second controller chip comprises a second power pin, wherein the first power pin and the second power pin are electrically connected to the other one.
In any one of the above-mentioned embodiments, an external shape and dimensions of first contact arrangement follows a SD memory card standard, and an external shape and dimensions of second contact arrangement follows a Compact Flash (CF) memory card standard.
The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:
The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims
Referring to
The structural features of the card reader 100 are described in detail hereinafter. The card reader 100 includes a housing 110, a first contact arrangement 130, a second contact arrangement 140, a substrate 150, a first controller chip 160, a second controller chip 170, a first connector 180 and a second connector 190.
The housing 110 is made of electrically insulating material and has a first and a second card slot 120 and 125 horizontally inwardly extended from the front side 111 of the housing 10 and arranged side by side in a horizontal direction, wherein the first and second card slots 120 and 125 are respectively exposed to an outside surrounding by two openings 113 and 115 for receiving memory cards 10 and 20 inserted therein.
As shown in
The first controller 160 is electrically connected to the first contact arrangement 130, and the second controller chip 170 is electrically connected to the second contact arrangement 140, thereby when inserting memory cards 10 and 20 into the card reader 100, a plurality of contacts of the memory cards 10 and 20 can contact with the first contact arrangement 130 or the second contact arrangement 140, for independently accessing said memory cards 10 and 20 by the corresponding first controller chip 160 or the second controller chip 170.
Specifically, the first and second controller chip 160 and 170 execute various routines to perform handshaking with the flash-memory cards 10 and 20 and accept data, either serially or in parallel. The data is buffered and then sent to the host PC (now shown) through the first and second connectors 180 and 190 respectively. In this embodiment, card reader 100 is contained in an external housing that connects to host PC (now shown) through a USB cable. However, other cables and interfaces such as IEEE 1394 FireWire may be substituted. Additionally, the two controller chips 160 and 170 in card reader 200 allows for card-to-card transfers. For example, images or other files from memory card 10 could be transferred to memory card 20 by first controller chip 160 reading serial data from memory card 10 inserted into first card slot 120, and by second controller chip 170 writing into memory card 20.
It is noted that, in this embodiment, the first controller chip 160 and the second controller chip 170 are separated, wherein the power pins (not shown) of each of the first and second controller chips 160 are respectively connected to the first and second connectors 180 and 190, and the ground pins (not shown) of each of the first and second controller chips 160 are respectively connected to the first and second connectors 180 and 190. That is, each of the first and second controller chips 160 and 170 may be functioned independently while the other controller chip is switched off, thereby avoiding power waste.
In accordance with an alternative embodiment of the disclosure, the power pins and ground pins of the controller chips 160 and 170 are connected to one the other. For example, as shown in
The arrangement of the card slots 120 and 125 should not be limited by the above-mentioned embodiment. For example, as shown in
Referring to
The housing 110b is made of electrically insulating material and has an opening 117 disposed on the front side of the housing 110b. The substrate 150b is corresponding to the opening 117 disposed in the housing 110b. The substrate 150b has a first surface 151b and a second surface 153b opposite to the first surface 151b. A first card slot 120b horizontally inwardly extended from the front side 111b of the housing 110b is adjacent to the first surface 151b of the substrate 150b, and a second card slot 125b horizontally inwardly extended from the front side 111b of the housing 110b is adjacent to the second surface 153b of the substrate 150b. That is, the two card slots 120b and 125b exposed to an outside surrounding by the same opening 117 for receiving memory cards 10 and 20 inserted therein.
As shown in
By the arrangement that two or more than two controller chips are independently connected to contact arrangements which are follows a particular memory card standard, the card reader may accept different flash memory cards. Also, since each of the controller chips is used to access a single type of memory card, a use of complex controller chip can be avoided and a cost of the card reader may be reduced.
While the invention has been described by way of example and in terms of preferred embodiment, it is to be understood that the invention is not limited thereto. To the contrary, it is intended to cover various modifications and similar arrangements (as would be apparent to those skilled in the art). Therefore, the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
