Title:
RECEIVING METHOD
Document Type and Number:
Japanese Patent JP2020167690
Kind Code:
A
Abstract:
To provide a receiving apparatus for enabling users to view subscription programs without loss of process ECMs and EMMs necessary for descrambling.SOLUTION: A receiving apparatus comprises: 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 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:
NONAKA YASUYUKI
TANAKA KATSUNORI
TANAKA KATSUNORI
Application Number:
JP2020091839A
Publication Date:
October 08, 2020
Filing Date:
May 27, 2020
Export Citation:
Assignee:
TOSHIBA VISUAL SOLUTIONS CORP
International Classes:
H04N21/4623; H04B1/16; H04H20/28; H04H40/90; H04H60/13; H04H60/15; H04H60/23; H04L9/08; H04L9/14; H04N21/266; H04N21/418
Domestic Patent References:
| JP2007195103A | 2007-08-02 |
Other References:
高度広帯域衛星デジタル放送運用規定 ARIB TR-B39, vol. 1.3版（第三分冊）, JPN6019042919, March 2017 (2017-03-01), pages 5 - 31, ISSN: 0004366598
デジタル放送におけるアクセス制御方式 ARIB STD-B25, vol. 6.5版, JPN6019042915, March 2015 (2015-03-01), pages 183 - 186, ISSN: 0004366599
地上デジタルテレビジョン放送運用規定 ARIB TR-B14, vol. 6.2版（第五分冊）, JPN6019042916, July 2016 (2016-07-01), pages 5 - 32, ISSN: 0004366600
ＢＳ/広帯域ＣＳデジタル放送運用規定 ARIB TR-B15, vol. 7.3版（第三分冊）, JPN6019042918, March 2017 (2017-03-01), pages 5 - 4, ISSN: 0004366601
デジタル放送におけるアクセス制御方式 ARIB STD-B25, vol. 6.5版, JPN6019042915, March 2015 (2015-03-01), pages 183 - 186, ISSN: 0004366599
地上デジタルテレビジョン放送運用規定 ARIB TR-B14, vol. 6.2版（第五分冊）, JPN6019042916, July 2016 (2016-07-01), pages 5 - 32, ISSN: 0004366600
ＢＳ/広帯域ＣＳデジタル放送運用規定 ARIB TR-B15, vol. 7.3版（第三分冊）, JPN6019042918, March 2017 (2017-03-01), pages 5 - 4, ISSN: 0004366601
Attorney, Agent or Firm:
Suzue International Patent Office