CN103442273A - CI card and CA card compatible method based on digital television set-top box and all-in-one machine - Google Patents
CI card and CA card compatible method based on digital television set-top box and all-in-one machine Download PDFInfo
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- CN103442273A CN103442273A CN2013103497219A CN201310349721A CN103442273A CN 103442273 A CN103442273 A CN 103442273A CN 2013103497219 A CN2013103497219 A CN 2013103497219A CN 201310349721 A CN201310349721 A CN 201310349721A CN 103442273 A CN103442273 A CN 103442273A
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Abstract
The invention provides a CI card and CA card compatible method based on a digital television set-top box and an all-in-one machine. According to the CI card and CA card compatible method, a CI card interface and an external CA card cover component are used so that a CA card can be compatible with a common CI card in structure after being inserted in a card cover, and therefore compatibility between the large card and the small card is realized. Further, card detection signal pins in a card slot interface circuit are arranged to complete detection of signal states when no card is inserted, the CI card is inserted and the CA card cover is inserted. The CI card and CA card compatible method can meet the requirement that the small card can be used while the large card is used, is low in cost and quite beneficial to popularization of large card products, and provides free selection space for broadcasting, television and consumers at the same time.
Description
Technical field
The present invention relates to a kind ofly based on digital TV set-top box and all-in-one CI card and CA card compatibility method, belong to the DITEC digital television communications field.
Background technology
In order to adapt to the different situation of CA system in all parts of the country, apparatus of digital television receiving has proposed the separation between machine and card scheme based on the CI interface.The CI scheme redefines pin based on the PCMCIA physical interface, for TS stream (MPEG-2 Transport Stream, a kind of in MPEG-2 form kind) exported and input control, CA card (lesser calorie) can be inserted in CI card (kilocalorie), be carried out descrambling in kilocalorie.The shortcoming of doing like this need to possess CA card and CI card simultaneously, and the cost of kilocalorie is higher.
The cost of kilocalorie has directly improved system cost, concerning broadcasting and TV and consumer, is all a no small expense, has seriously restricted the popularization of kilocalorie product.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of digital TV set-top box based on the CI card interface and the method for all-in-one CI card and CA card compatibility, the method adopts CI card interface and outside CA ferrule structure part, can be structurally compatible with common CI card after making the CA card insert cutting ferrule, thereby realize large lesser calorie compatibility, further, card detection signal pin in the draw-in groove interface circuit is arranged, completed the detection of signal condition when the nothing card is inserted, inserts the CI card and inserts the CA cutting ferrule.The method can meet the use of kilocalorie simultaneously can use lesser calorie again, and cost is low, is very beneficial for the popularization of kilocalorie product, and the space of free selection also is provided for broadcasting and TV and consumer simultaneously.
The technical solution used in the present invention is as follows: a kind of method based on digital TV set-top box and all-in-one CI card and CA card compatibility, and concrete grammar is: the CA card is arranged to a CA cutting ferrule, complete the switching of the little card signal of ISO7816 and kilocalorie pin in CA cutting ferrule inside; Card detection signal pin in the draw-in groove interface circuit is arranged, completed the detection of signal condition when the nothing card is inserted, inserts the CI card and inserts the CA cutting ferrule.
As preferably, arrange when without card, inserting, inserting the CI card and inserting the CA cutting ferrule, the detection signal state of card detection signal pin is respectively 11,00 and 10.
As preferably, arrange while inserting the CA cutting ferrule, the detection signal state of card detection signal pin is 01.
As preferably, in the situation that master chip is supported the CI function, concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, described pin CD1# is connected with two I/O mouths respectively with CD2#; In CI card inside, two pins that will be corresponding with CD2# with card detection signal pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin that will be corresponding with card detection signal pin CD1# is unsettled, pin ground connection that will be corresponding with card detection signal pin CD2#; In the situation that master chip is not supported the CI function, its concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, pin CD1# is connected with card detected register CI_CD by an OR circuit with CD2#, increases an I/O mouth at the master chip end and is connected with pin CD2#; In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin that will be corresponding with pin CD1# is unsettled, pin ground connection that will be corresponding with pin CD2#.
As preferably, in the situation that master chip is supported the CI function, concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, described pin CD1# is connected with two I/O mouths respectively with CD2#; In CI card inside, two pins that will be corresponding with CD2# with card detection signal pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with card detection signal pin CD1#, pin that will be corresponding with card detection signal pin CD2# is unsettled; In the situation that master chip is not supported the CI function, its concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, pin CD1# is connected with card detected register CI_CD by an AND circuit with CD2#, increases an I/O mouth at the master chip end and is connected with pin CD2#; In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with pin CD1#, pin that will be corresponding with pin CD2# is unsettled.
As preferably, arrange when without card, inserting, inserting the CI card and inserting the CA cutting ferrule, the detection signal state of card detection signal pin is respectively 10,00 and 11.
Compared with prior art, the invention has the beneficial effects as follows: method of the present invention can meet the use of kilocalorie can use lesser calorie again simultaneously, cost is low, is very beneficial for the popularization of kilocalorie product, and the space of free selection also is provided for broadcasting and TV and consumer simultaneously.
The accompanying drawing explanation
Fig. 1 is when in the present invention, in specific embodiment one, master chip is not supported the CI function, draw-in groove circuit connection diagram.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Disclosed all features in this specification, except the feature of mutual eliminating, all can combine by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing), unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is,, unless special narration, each feature is an example in a series of equivalences or similar characteristics.
A kind of based on digital TV set-top box and all-in-one CI card and CA card compatibility method, concrete grammar is: the CA card is arranged to a CA cutting ferrule, complete the switching of the little card signal of ISO7816 and kilocalorie pin in CA cutting ferrule inside; Card detection signal pin in the draw-in groove interface circuit is arranged, completed the detection of signal condition when the nothing card is inserted, inserts the CI card and inserts the CA cutting ferrule.
For the product of large lesser calorie compatible parties case, adopt the large card interface of general CI (purpose is for structurally applicable with common kilocalorie).Simultaneously, for compatible lesser calorie (being the CA card), by making outside CA ferrule structure part, making lesser calorie insert cutting ferrule later can be structurally compatible with common kilocalorie.Complete the switching of the little card signal of ISO7816 and kilocalorie pin in CA cutting ferrule inside, the forwarding method as prior art and the easy acquisition of various equivalent modifications energy, repeat no more in the present invention; After how can making CI card or CA cutting ferrule insert draw-in groove, can effectively be identified, and differentiation that can be correct (current insertion be CI card or CA cutting ferrule), this is the problem that large lesser calorie compatible parties case must solve.
Specific embodiment one:
In the situation that master chip is supported the CI function, concrete method to set up is:
For card detection signal pin CD1# and CD2# provide the pullup resistor of 10k Ω to be connected to the Vcc(Reference Design, be 3.3V), at the master chip end, described pin CD1# is connected with two I/O mouths respectively with CD2#.In the situation that do not have CI card (or cutting ferrule) to insert, these two pins acquiescences are all the time in high level state, and master chip detects 11 (CD1#, CD2#), in without the card state.
In CI card inside, two pins that will be corresponding with CD2# with card detection signal pin CD1# are connected with GND, and two the pin ground connection corresponding with pin CD1# and CD2#, drag down input signal.After the CI card inserts draw-in groove, the pin CD1# in the slot interface circuit just is connected with GND with CD2#, is forced to low.Pin CD1# and CD2# become low level by the high level of acquiescence simultaneously, and master chip detects 00 (CD1#, CD2#).Identified the CI card and inserted, master chip has successfully recognized the CI card.
In the CA of made cutting ferrule inside, pin that will be corresponding with card detection signal pin CD1# is unsettled, pin ground connection that will be corresponding with card detection signal pin CD2#, the pin corresponding with pin CD2# drags down input signal, pin corresponding to pin CD1# is in NC(not connect) state.After the CA cutting ferrule inserts draw-in groove, the pin CD2# in the slot interface circuit just is connected with GND, is forced to lowly, by the high level of giving tacit consent to, becomes low level, and the pin CD1# in the slot interface circuit still keeps high level constant.Master chip detects 10 (CD1# and CD2#) like this.Identified the CA cutting ferrule and inserted, master chip has successfully recognized the CA cutting ferrule.
As shown in Figure 1, in the situation that master chip is not supported the CI function, its concrete method to set up is:
Some special master chip is not supported the CI function, needs external CI interface chip (as CIMAX) to realize the CI function.In this case, plug-in card detects BIT position (having 0 and 1 two states) that can be by read register CI_CD and increases an I/O mouth and controls to realize.For blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, pin CD1# is connected with card detected register CI_CD by an OR circuit with CD2#, increases an I/O mouth at the master chip end and is connected with pin CD2#.Only have as pin CD1# and CD2# during simultaneously for low level, card detected register CI_CD is 0, and any one be high level or during simultaneously for high level, blocking detected register CI_CD is 1 for pin CD1# and CD2#.In the situation that do not have CI card (or cutting ferrule) to insert, pin CD1# and CD2# acquiescence are all the time in high level state, and detected register CI_CD is that 1, I/O mouth is 1, and master chip detects 11 (CI_CD and I/O).
In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND, pin CD1# and CD2# ground connection, drag down input signal.After the CI card inserts draw-in groove, the pin CD1# in the slot interface circuit just is connected with GND with CD2#, is forced to low.Pin CD1# and CD2# become low level by the high level of acquiescence simultaneously, and detected register CI_CD is that 0, I/O mouth is 0, and master chip detects 00 (CI_CD and I/O).Identified the CI card and inserted, master chip has successfully recognized the CI card.
In the CA of made cutting ferrule inside, pin that will be corresponding with pin CD1# is unsettled, pin ground connection that will be corresponding with pin CD2#, and the pin corresponding with pin CD2# drags down input signal, the pin corresponding with pin CD1# is in NC(not connect) state.After the CA cutting ferrule inserts draw-in groove, the pin CD2# in the slot interface circuit just is connected with GND, is forced to lowly, by the high level of giving tacit consent to, becomes low level.Pin CD1# in the slot interface circuit still keeps high level constant.Detected register CI_CD is that 1, I/O mouth is 0, and master chip detects 10 (CI_CD and I/O) like this.Identified the CA cutting ferrule and inserted, master chip has successfully recognized the CA cutting ferrule.
Specific embodiment two:
In the situation that master chip is supported the CI function, from specific embodiment one, different places is set and is that concrete grammar is to the setting of the CA cutting ferrule inner pin of made:
In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with card detection signal pin CD1#, pin that will be corresponding with card detection signal pin CD2# is unsettled, and the pin corresponding with pin CD1# drags down input signal, and pin corresponding to pin CD2# is in NC(not connect) state.After the CA cutting ferrule inserts draw-in groove, the pin CD1# in the slot interface circuit just is connected with GND, is forced to lowly, by the high level of giving tacit consent to, becomes low level, and the pin CD2# in the slot interface circuit still keeps high level constant.Master chip detects 01 (CD1# and CD2#) like this.Identified the CA cutting ferrule and inserted, master chip has successfully recognized the CA cutting ferrule.
In the situation that master chip is not supported the CI function, its concrete method to set up is:
The places different from specific embodiment are: will increase at the master chip end or door change into and door, only have as pin CD1# and CD2# during simultaneously for high level, card detected register CI_CD is just 1.In the situation that do not have CI card (or cutting ferrule) to insert, pin CD1# and CD2# acquiescence are all the time in high level state, and detected register CI_CD is that 1, I/O mouth is 1, and master chip detects 11 (CI_CD and I/O).
In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND, pin CD1# and CD2# ground connection, drag down input signal.After the CI card inserts draw-in groove, the pin CD1# in the slot interface circuit just is connected with GND with CD2#, is forced to low.Pin CD1# and CD2# become low level by the high level of acquiescence simultaneously, and detected register CI_CD is that 0, I/O mouth is 0, and master chip detects 00 (CI_CD and I/O).Identified the CI card and inserted, master chip has successfully recognized the CI card.
In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with pin CD1#, pin that will be corresponding with pin CD2# is unsettled, and the pin corresponding with pin CD1# drags down input signal, the pin corresponding with pin CD2# is in NC(not connect) state.After the CA cutting ferrule inserts draw-in groove, the pin CD1# in the slot interface circuit just is connected with GND, is forced to lowly, by the high level of giving tacit consent to, becomes low level.Pin CD2# in the slot interface circuit still keeps high level constant.Detected register CI_CD is that 0, I/O mouth is 1, and master chip detects 01 (CI_CD and I/O) like this.Identified the CA cutting ferrule and inserted, master chip has successfully recognized the CA cutting ferrule.
Specific embodiment three:
Arrange when without card, inserting, inserting the CI card and inserting the CA cutting ferrule, the detection signal state of card detection signal pin is respectively 10,00 and 11.
In the situation that master chip is supported the CI function, pin CD1# is connected with Vcc, pin CD2# is connected with GND.In CA cutting ferrule inside, pin that will be corresponding with pin CD1# is unsettled, and the pin that pin CD2# is corresponding is connected with Vcc.
In the situation that master chip is not supported the CI function, the master chip end adopts OR circuit, and pin CD1# is connected with Vcc, and pin CD2# is connected with GND.In CA cutting ferrule inside, pin that will be corresponding with pin CD1# is unsettled or be connected with GND, and pin that will be corresponding with pin CD2# is connected with Vcc.
By above method, after can making CI card or CA cutting ferrule insert draw-in groove, can effectively be identified, and differentiation that can be correct (current insertion be CI card or CA cutting ferrule), for the normal operation of large lesser calorie compatible parties case product provides necessary condition and guarantee.
Claims (6)
1. the method based on digital TV set-top box and all-in-one CI card and CA card compatibility, concrete grammar is: the CA card is arranged to a CA cutting ferrule, complete the switching of the little card signal of ISO7816 and kilocalorie pin in CA cutting ferrule inside; Card detection signal pin in the draw-in groove interface circuit is arranged, completed the detection of signal condition when the nothing card is inserted, inserts the CI card and inserts the CA cutting ferrule.
2. method according to claim 1 is characterized in that: arrange when without card, inserting, inserting the CI card and inserting the CA cutting ferrule, the detection signal state of card detection signal pin is respectively 11,00 and 10.
3. method according to claim 2 is characterized in that: arrange while inserting the CA cutting ferrule, the detection signal state of card detection signal pin is 01.
4. method according to claim 2, in the situation that master chip is supported the CI function, concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, described pin CD1# is connected with two I/O mouths respectively with CD2#; In CI card inside, two pins that will be corresponding with CD2# with card detection signal pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin that will be corresponding with card detection signal pin CD1# is unsettled, pin ground connection that will be corresponding with card detection signal pin CD2#; In the situation that master chip is not supported the CI function, its concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, pin CD1# is connected with card detected register CI_CD by an OR circuit with CD2#, increases an I/O mouth at the master chip end and is connected with pin CD2#; In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin that will be corresponding with pin CD1# is unsettled, pin ground connection that will be corresponding with pin CD2#.
5. method according to claim 3, in the situation that master chip is supported the CI function, concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, described pin CD1# is connected with two I/O mouths respectively with CD2#; In CI card inside, two pins that will be corresponding with CD2# with card detection signal pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with card detection signal pin CD1#, pin that will be corresponding with card detection signal pin CD2# is unsettled; In the situation that master chip is not supported the CI function, its concrete method to set up is: for blocking detection signal pin CD1# and CD2#, provide the pullup resistor of 10k Ω to be connected to Vcc, at the master chip end, pin CD1# is connected with card detected register CI_CD by an AND circuit with CD2#, increases an I/O mouth at the master chip end and is connected with pin CD2#; In CI card inside, two pins corresponding with CD2# with pin CD1# are connected with GND; In the CA of made cutting ferrule inside, pin ground connection that will be corresponding with pin CD1#, pin that will be corresponding with pin CD2# is unsettled.
6. method according to claim 1 is characterized in that: arrange when without card, inserting, inserting the CI card and inserting the CA cutting ferrule, the detection signal state of card detection signal pin is respectively 10,00 and 11.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103497219A CN103442273A (en) | 2013-08-13 | 2013-08-13 | CI card and CA card compatible method based on digital television set-top box and all-in-one machine |
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| CN2013103497219A CN103442273A (en) | 2013-08-13 | 2013-08-13 | CI card and CA card compatible method based on digital television set-top box and all-in-one machine |
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Application publication date: 20131211 |