Abstract: In various examples, a file such as one representing a game build may be encrypted using a (e.g., randomly generated) content-encryption key, and the content-encryption key may be encrypted using a key-encryption key. The encrypted content-encryption key may be included in the encrypted file (e.g., as metadata), and an identifier associated with the key-encryption key may be included in the encrypted file (e.g., as part of an entropy tag appended to the filename). As such, the encrypted file may be securely distributed (e.g., via a content distribution network). Taking an encrypted game build for cloud gaming as an example, a game developer may encrypt a game build (e.g., as an encrypted disk) and distribute the encrypted build through an interface such as a developer portal of a cloud gaming platform, which may distribute the encrypted build to various data centers and/or geographic zones of the cloud gaming platform.

Abstract: Knowledge based speech recognition apparatus and methods are provided for translating an input speech signal to text. The speech recognition apparatus captures an input speech signal, segments it based on the detection of pitch period, and generates a series of hypothesized acoustic feature vectors for the input speech signal that characterizes the signal in terms of primary acoustic events, detectable vowel sounds and other acoustic features. The apparatus and methods employ a largely speaker-independent dictionary based upon the application of phonological and phonetic/acoustic rules to generate acoustic event transcriptions against which the series of hypothesized acoustic feature vectors are compared to select word choices. Local and global syntactic analysis of the word choices is provided to enhance the recognition capability of the methods and apparatus.