PATENT CLAIM ANALYSIS

Application Number: 15742653
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["725", "031000"]

Abstract:
A broadcast receiving system is disclosed that verifies a current digital certificate extracted from a digital broadcast signal using a previous digital certificate previously stored as trusted. The current and previous digital certificates are associated with digital signatures with which data received with the broadcast signal has been signed. Also disclosed is a system for signing application data to be broadcast together with a digital certificate in a digital broadcast signal. A current digital certificate attesting the validity of a digital signature attached to broadcast data is in turn signed with a digital signature using one or more previous private keys associated with respective previous certificates identifying the issuer of the current digital certificate. These disclosures are in particular applicable to HbbTV.

Claim (Index 2):
A system  claim 1 , wherein the processor is configured to:\n extract the current digital certificate from the digital signal, wherein the current digital certificate has been digitally signed with one or more private keys associated with respective previous digital certificates issued by the issuer of the current certificate; make a first determination of whether the extracted digital certificate has previously been stored as trusted; in response to the first determination being negative, make a second determination of whether a previous digital certificate issued by the issuer has been stored as trusted; in response to the second determination being positive, use the stored as trusted previous digital certificate to make a third determination of whether the extracted certificate is valid by verifying the extracted digital certificate using a respective public key associated with the stored as trusted previous digital certificate; and in response to the third determination being positive, store the extracted digital certificate as trusted.

Metadata:
- Claim Count in Document: 21.0
- Percentile: 86.0
- Lexical Diversity: 2.01587
- Patent Class: 725.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['09715350', '12241566', '13452408', '09359205', '12059758']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.5137077881007738
- 35 USC 102 Novelty (BERT): 0.5146152895321701
- Combined Prediction Score: 0.5137985382439134
- Mean Citation Score: 287.445424
- Max Citation Score: 296.1634200000001
- Similarity Product: 204.24327695270424

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test