CN102547424B - Method for detecting compatibility of CI card interface and CA card - Google Patents
Method for detecting compatibility of CI card interface and CA card Download PDFInfo
- Publication number
- CN102547424B CN102547424B CN201210001696.0A CN201210001696A CN102547424B CN 102547424 B CN102547424 B CN 102547424B CN 201210001696 A CN201210001696 A CN 201210001696A CN 102547424 B CN102547424 B CN 102547424B
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- card
- cutting ferrule
- pin
- card interface
- interface circuit
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001514 detection method Methods 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 2
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Abstract
The invention relates to a method for detecting compatibility of a CI card interface and a CA card. The method for detecting the compatibility of the CI card interface and the CA card comprises the following steps of: a, providing a card sleeve which is matched with the CI card interface and is used for inserting the CI card; b, through the card sleeve in a CI card interface circuit, judging whether the card sleeve is detected by detecting whether the electrical level of a pin is changed after the pin is unoccupied and inserted into the card sleeve; c, providing voltage for the CA card in the card sleeve after determining that the card sleeve is detected; d, inserting the CA card into the card sleeve, and judging whether the CA card is detected by detecting whether the electrical level of the pin corresponding to the CA card in the CI card interface circuit is changed. By the method, whether the CI card (a big card) interface is compatible with the CA card (a small card) can be effectively detected, so that equipment such as a digital television and a set top box can use the big card (CI card) and also can use the small card (CA card), and popularization of big card products can be facilitated; and by the method, necessary conditions and guarantee are provided for normal working of digital television receiving equipment.
Description
Technical field
The present invention relates to detect the method for unlike signal compatibility in Digital Television, is the method that detects the compatible CA of CI (Common Interface) card interface (Condition Access) card concretely.
Background technology
In the equipment application of Broadcast and TV system, in order to adapt to CA (the Condition Access condition reception) situation that system is different all over China, apparatus of digital television receiving has proposed the separation between machine and card scheme based on CI (Common Interface) interface.The separation between machine and card scheme of CI interface is to redefine pin based on PCMCIA physical interface, for TS (Transport Stream), flows to line output and input control, in kilocalorie (CI card), carries out descrambling.The shortcoming of doing is like this that the cost of kilocalorie is higher.
The cost of kilocalorie has directly improved system cost, is all a larger expense concerning broadcasting and TV supplier and consumer, has seriously restricted the popularization of kilocalorie product.And system compatible kilocalorie and lesser calorie (CA card) simultaneously not now, the use that neither one system can meet kilocalorie (CI card) now can meet again the use of lesser calorie (CA card) simultaneously.
Summary of the invention
For above problem, the invention provides the method for the compatible CA card of a kind of CI of detection card interface, whether CI card (kilocalorie) interface can effectively be detected by compatible CA card (lesser calorie), make the equipment such as Digital Television or Set Top Box can meet the use of kilocalorie (CI card), also can use lesser calorie (CA card), be conducive to the popularization of current kilocalorie product, simultaneously Ye Wei broadcasting and TV supplier and the consumer space that provides more choices.
The present invention detects the method for the compatible CA card of CI card interface, comprising:
A. insert the cutting ferrule of CA card, the interface of described cutting ferrule and CI card adapts;
B. cutting ferrule detects: whether the level by the cutting ferrule detection pin in CI card interface circuit after vacant and the described cutting ferrule of insertion changes judges whether to detect cutting ferrule;
C. judgement detects after cutting ferrule, by described cutting ferrule, provides voltage for the CA card in cutting ferrule;
D.CA card detects: CA card is inserted to described cutting ferrule, by whether changing and judge whether to detect CA card with the level of CA card corresponding pin in CI card interface circuit.
Because CA card is to transfer by inserting cutting ferrule, so system will first detect after cutting ferrule, could to the CA card in cutting ferrule, detect again.Method of the present invention has been utilized general CI (kilocalorie) interface on existing equipment, object be for common CI card structurally can be general.Simultaneously CA card (lesser calorie) is connected with CI interface by outside cutting ferrule, make CA card insert after cutting ferrule can with common CI card compatibility structurally.
Concrete, step b comprises:
Cutting ferrule in CI card interface circuit is detected to pin and by the first pull-up resistor, is connected to power input, make described cutting ferrule detect pin when vacant all the time in high level;
To detect pin ground connection (GND) corresponding to pin for inserting cutting ferrule cutting ferrule and CI card interface circuit of CA card, make cutting ferrule described corresponding pin be input as low level;
Described cutting ferrule is inserted to CI card interface, the cutting ferrule detection pin of CI card interface circuit and the corresponding pin of cutting ferrule are connected, if the cutting ferrule of CI card interface circuit detects the level of pin, from high level, become low level, cutting ferrule detected; If it is high level that the cutting ferrule of CI card interface circuit detects the level of pin always, cutting ferrule do not detected.
On this basis, concrete a kind of scheme is that it is CD1# (36) pin and CD2# (67) pin of CI card interface integrated circuit that the cutting ferrule in described CI card interface circuit detects pin.
Concrete, cutting ferrule detection pin is connected to power input (Vcc) by the first pull-up resistor of 10K Ω.
Further, the reference voltage of power input (Vcc) is 3.3V.
Another concrete scheme is that steps d comprises:
To in CI card interface circuit, be connected by the second pull-up resistor with the corresponding pin of CA card with power supply, vacant cutting ferrule is inserted after CI interface, described corresponding pin is always high level;
CA card inserts after cutting ferrule, by cutting ferrule, is connected with the corresponding pin described in CI card interface circuit, if described corresponding pin becomes low level from high level, CA card detected, and the mode reporting system CPU that this level is changed to interrupt; If described corresponding pin is high level always, CA card do not detected.
Concrete, the SCDETEC pin of cutting ferrule by its internal circuit and CA link and connect.
Concrete, in CI card interface circuit, be IOIS16A (33) pin with the corresponding pin of CA card, IOIS16A pin is idle in application at ordinary times, can make full use of to realize more function to these idle pins.
The present invention detects the method for the compatible CA card of CI card interface, can whether can effectively detect by compatible CA card (lesser calorie) CI card (kilocalorie) interface, make the equipment such as Digital Television or Set Top Box can meet the use of kilocalorie (CI card), also can use lesser calorie (CA card), be conducive to the popularization of current kilocalorie product, simultaneously Ye Wei broadcasting and TV supplier and the consumer space that provides more choices.Method of the present invention is also for the normal work of apparatus of digital television receiving provides necessary condition and guarantee simultaneously.
Below in conjunction with the embodiment of embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to following example.Without departing from the idea case in the present invention described above, various replacements or the change according to ordinary skill knowledge and customary means, made, all should comprise within the scope of the invention.
Embodiment
The present invention detects the method for the compatible CA card of CI card interface, comprising:
A. insert the cutting ferrule of CA card, the interface of described cutting ferrule and CI card adapts.Be specially:
Cutting ferrule in CI card interface circuit is detected to first pull-up resistor of pin (CD1# (36) pin and CD2# (67) pin) by 10K Ω and is connected to 3.3V power input (Vcc), make described cutting ferrule detect pin (CD1# (36) pin and CD2# (67) pin) when vacant all the time in high level;
To detect pin ground connection (GND) corresponding to pin (CD1# (36) pin and CD2# (67) pin) for inserting cutting ferrule cutting ferrule and CI card interface circuit of CA card, make cutting ferrule described corresponding pin be input as low level;
Described cutting ferrule is inserted to CI card interface, the cutting ferrule detection pin (CD1# (36) pin and CD2# (67) pin) of CI card interface circuit is connected with the corresponding pin of cutting ferrule, if the cutting ferrule of CI card interface circuit detects the level of pin (CD1# (36) pin and CD2# (67) pin), from high level, become low level, explanation detects cutting ferrule; If it is high level that the cutting ferrule of CI card interface circuit detects the level of pin (CD1# (36) pin and CD2# (67) pin) always, cutting ferrule do not detected.
B. cutting ferrule detects: whether the level by the cutting ferrule detection pin (CD1# (36) pin and CD2# (67) pin) in CI card interface circuit after vacant and the described cutting ferrule of insertion changes judges whether to detect cutting ferrule;
C. judgement detects after cutting ferrule, by described cutting ferrule, provides voltage for the CA card in cutting ferrule;
D.CA card detects: CA card is inserted to described cutting ferrule, by whether changing and judge whether to detect CA card with the level of CA card corresponding pin in CI card interface circuit.Be specially:
By being connected with power supply by the second pull-up resistor with the corresponding pin (as idle at ordinary times IOIS16A (33) pin) of CA card in CI card interface circuit, vacant cutting ferrule is inserted after CI interface, described corresponding pin is always high level;
CA card inserts after cutting ferrule, SCDETEC pin by cutting ferrule is connected with cutting ferrule, by cutting ferrule, be connected with the corresponding pin described in CI card interface circuit (as IOIS16A (33) pin) again, if described corresponding pin becomes low level from high level, explanation detects CA card, and the mode reporting system CPU that this level is changed to interrupt; If described corresponding pin is high level always, CA card do not detected.
Method of the present invention has been utilized general CI (kilocalorie) interface on existing equipment, object be for common CI card structurally can be general.Simultaneously CA card (lesser calorie) is connected with CI interface by outside cutting ferrule, make CA card insert after cutting ferrule can with common CI card compatibility structurally.
Claims (8)
1. detect the method for the compatible CA card of CI card interface, its feature comprises:
A. insert the cutting ferrule of CA card, the interface of described cutting ferrule and CI card adapts;
B. cutting ferrule detects: whether the level by the cutting ferrule detection pin in CI card interface circuit after vacant and the described cutting ferrule of insertion changes judges whether to detect cutting ferrule;
C. judgement detects after cutting ferrule, by described cutting ferrule, provides voltage for the CA card in cutting ferrule;
D.CA card detects: CA card is inserted to described cutting ferrule, by whether changing and judge whether to detect CA card with the level of CA card corresponding pin in CI card interface circuit.
2. the method for the compatible CA card of detection as claimed in claim 1 CI card interface, is characterized by step b and comprises:
Cutting ferrule in CI card interface circuit is detected to pin and by the first pull-up resistor, is connected to power input, make described cutting ferrule detect pin when vacant all the time in high level;
To detect pin ground connection corresponding to pin for inserting cutting ferrule cutting ferrule and CI card interface circuit of CA card, make cutting ferrule described corresponding pin be input as low level;
Described cutting ferrule is inserted to CI card interface, the cutting ferrule detection pin of CI card interface circuit and the corresponding pin of cutting ferrule are connected, if the cutting ferrule of CI card interface circuit detects the level of pin, from high level, become low level, cutting ferrule detected; If it is high level that the cutting ferrule of CI card interface circuit detects the level of pin always, cutting ferrule do not detected.
3. the method for the compatible CA card of detection CI card interface as claimed in claim 2, is characterized by: it is CD1# pin and the CD2# pin of CI card interface integrated circuit that the cutting ferrule in described CI card interface circuit detects pin.
4. the method for the compatible CA card of detection CI card interface as claimed in claim 2, is characterized by: the first described pull-up resistor is 10K Ω.
5. the method for the compatible CA card of detection CI card interface as claimed in claim 2, is characterized by: described power supply is 3.3V power supply.
6. the method for the compatible CA card of detection as claimed in claim 1 CI card interface, is characterized by steps d and comprises:
To in CI card interface circuit, be connected by the second pull-up resistor with the corresponding pin of CA card with power supply, vacant cutting ferrule is inserted after CI interface, described corresponding pin is always high level;
CA card inserts after cutting ferrule, by cutting ferrule, is connected with the corresponding pin described in CI card interface circuit, if described corresponding pin becomes low level from high level, CA card detected, and the mode reporting system CPU that this level is changed to interrupt; If described corresponding pin is high level always, CA card do not detected.
7. the method for the compatible CA card of detection as claimed in claim 6 CI card interface, is characterized by: the SCDETEC pin of cutting ferrule by its internal circuit and CA link and connect.
8. the method for the compatible CA card of detection CI card interface as claimed in claim 6, is characterized by: in CI card interface circuit, be IOIS16A pin with the corresponding pin of CA card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001696.0A CN102547424B (en) | 2012-01-05 | 2012-01-05 | Method for detecting compatibility of CI card interface and CA card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210001696.0A CN102547424B (en) | 2012-01-05 | 2012-01-05 | Method for detecting compatibility of CI card interface and CA card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102547424A CN102547424A (en) | 2012-07-04 |
| CN102547424B true CN102547424B (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210001696.0A Expired - Fee Related CN102547424B (en) | 2012-01-05 | 2012-01-05 | Method for detecting compatibility of CI card interface and CA card |
Country Status (1)
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| CN (1) | CN102547424B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103442273A (en) * | 2013-08-13 | 2013-12-11 | 四川长虹电器股份有限公司 | CI card and CA card compatible method based on digital television set-top box and all-in-one machine |
| CN103442276A (en) * | 2013-08-13 | 2013-12-11 | 四川长虹电器股份有限公司 | Method for compatibility of digital television set-top box based on CI card functions and all-in-one machine CA card |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI94680C (en) * | 1993-11-26 | 1995-10-10 | Nokia Mobile Phones Ltd | Expanded PCMCIA interface and procedure for its identification |
| WO2005029849A1 (en) * | 2003-09-19 | 2005-03-31 | Matsushita Electric Industrial Co., Ltd. | Digital television receiver module and digital television receiver using the same |
| EP1814321B1 (en) * | 2004-11-12 | 2013-01-30 | Panasonic Corporation | Digital television receiver circuit module |
| CN1904913A (en) * | 2006-07-28 | 2007-01-31 | 凤凰微电子（中国）有限公司 | Smart card for implementing inside power management and power managing method |
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2012
- 2012-01-05 CN CN201210001696.0A patent/CN102547424B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102547424A (en) | 2012-07-04 |
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