VCMS/AV Detector Optimized for MIPS32™ v1.0
The Verance Copy Management System for Audiovisual Content (VCMS/AV) employs proprietary audio watermarking techniques to enable the communication and enactment of use policies for audiovisual content across a broad range of distribution channels and devices. VCMS/AV has been adopted as a component of the AACS content protection system and inclusion of the VCMS/AV Detector will be required for all Blu-ray players starting in late 2008.
To facilitate Blu-ray component and player manufacturers with the successful and timely integration of VCMS/AV technology with their products, Verance is offering a line of ready-to-use object-code libraries (“Verance Finished Detectors”) that implement the VCMS/AV Detector technology. Verance Finished Detectors have been certified by Verance to comply with the requirements of the VCMS/AV Detector specifications. There is no need for additional detector compliance validation or optimization, no source code to maintain and protect, and no requirement for specialized watermark technology or digital signal processing (DSP) expertise. Software robustness (i.e., tamper resistance) technology is not included, and must be applied to products including Finished Detectors prior to sale.
The VCMS/AV Detector Optimized for MIPS32™ is a Finished Detector compatible with the MIPS32™ family of processor cores. It provides an optimized finished detector solution that can be easily integrated with other system functions, allowing consumer product developers to reduce product costs, minimize engineering efforts, and reduce time-to-market.
Features
- Optimized for use with MIPS32™ family of processor cores
- Supported Cores: 24KEc, 4KE
- Object-code compatible with Release 2 of the MIPS32 Architecture
- Certified as compliant with the VCMS/AV Specifications
- ANSI C Application Programming Interface (API)
- Includes API header source code files, sample application source, file IO libraries, and sample build files
Audio Formats
- Sampling Rates:
- 12 kHz, 24 kHz, 48 kHz, 96 kHz, 192 kHz
- 11.025 kHz, 22.05 kHz, 44.1 kHz, 88.2 kHz, 176.4 kHz
- 8kHz, 16 kHz, 32 kHz, 64 kHz
- Sample Format: 16- and 24-bit
- Audio Channels: Up to 8 channels of audio at any supported Sampling Rate
Specifications
- Full compatibility with:
- VCMS/AV System Specification v1.0
- AACS Interim License Agreement Compliance Rules
Processing Requirements
- Memory Usage
- Program Memory: 51 KB
- Static Data Memory: 17 KB
- Dynamic Memory: 10 KB
CPU Utilization — Worst Case1
| Sample Rate (Max) |
Audio Channels (Max) | Average MHz (Max) | Peak2 MHz |
| 44.1 KHz | 8 | 10.2 | 19.2 |
| 48 KHz | 8 | 10.2 | 19.7 |
| 88.2 KHz | 6 | 11.9 | 21.5 |
| 96 KHz | 6 | 13.0 | 23.9 |
| 176.4 KHz | 2 | 15.7 | 29.2 |
| 192 KHz | 2 | 16.9 | 32.1 |
| 1Benchmarks from MIPSsim cycle-accurate simulator
2Peak achieved using cooperative timer-based limiting |
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