送受信方法 - TVS REGZA Corporation

Title:

送受信方法

Document Type and Number:

Japanese Patent JP6972254

Kind Code:

B2

Abstract:

To provide a transmitting and receiving method for enabling users to view subscription programs without failing to process ECMs and EMMs necessary for descrambling, in the present embodiment.SOLUTION: According to one embodiment, there are included: a tuner unit configured to receive a service signal; a descrambler configured to receive a scrambled content output from the tuner unit; a control unit configured to control at least the tuner unit and the descrambler; and a CAS module configured to obtain a second key (Ks) to be given to the descrambler. The control unit set that, after receiving an EMM per one business entity, at least R (an integer greater than or equal to 1) of the EMMs should be processed within a processing grace period with respect to the CAS module. The control unit, after detecting the EMM of the one business entity and then processing R EMMs within the EMM processing grace period, when the next EMM is detected, suppresses a command transmission to the CAS module with regard to the EMM within at least the grace period.SELECTED DRAWING: Figure 25

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Inventors:

Yasuyuki Nonaka
Katsunori Tanaka

Application Number:

JP2020138236A

Publication Date:

November 24, 2021

Filing Date:

August 18, 2020

Export Citation:

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Assignee:

TVS REGZA Corporation

International Classes:

H04N21/4623; H04H20/28; H04H40/90; H04H60/15; H04H60/23; H04L9/08; H04N21/418; H04N21/4405

Domestic Patent References:

JP2007195103A
JP2015228644A

Other References:

デジタル放送におけるアクセス制御方式,ARIB STD-B25,6.5版,一般社団法人電波産業会,2015年03月,p.183-186,191-195,221,270
地上デジタルテレビジョン放送運用規定,ARIB TR-B14,6.2版(第五分冊),一般社団法人電波産業会,2016年07月,p.5-32 - 5-33,5-70 - 5-71
BS/広帯域CSデジタル放送運用規定,ARIB TR-B15,7.3版(第三分冊),一般社団法人電波産業会,2017年03月,p.5-4-5-5,5-46,5-61,5-68
高度広帯域衛星デジタル放送運用規定,ARIB TR-B39,1.3版(第三分冊),一般社団法人電波産業会,2017年03月,p.5-31-5-32,5-93-5-94

Attorney, Agent or Firm:

Suzue International Patent Office

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