Audio/video processing engine

• US 6,753,925 B2
• Filed: 03/30/2001
• Issued: 06/22/2004
• Est. Priority Date: 03/30/2001
• Status: Expired due to Fees

• Current Assignee: Tektronix Incorporated (Fortive Corp.)
• Original Assignee: Tektronix Incorporated (Fortive Corp.)
• Inventors: Limaye, Ajit M.
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US09/823,402
• Publication Number:
  US 20020140857A1
• Time in Patent Office: 1,180 Days
• Field of Search: 348/515, 348/714, 348/719, 710/72, 710/74, 710/8, 710/12, 710/14, 712/32, 712/36, 712/229, 326/37, 326/39, 326/40, 326/63
• US Class Current: 348/515
• CPC Class Codes: G06F 15/7867 with reconfigurable architecture

Abstract

An audio/video processing engine that is programmable for processing digital video and digital audio simultaneously, either in parallel or concurrently, has an audio/video I/O processor that communicates with a single programmable hardware processor having reconfigurable logic blocks. The single programmable hardware processor communicates with both a general purpose processor and an optional digital signal processor for adjunct processing. The general purpose processor has a flash memory for initializing the programmable elements of the audio/video processing engine and has data links for remote accessing for programming, control and monitoring. The flash memory is accessible by the single programmable hardware processor, and may be reloaded remotely via the general purpose processor.

Claims

1. An audio/video processing engine for simultaneous realtime processing of digital video and digital audio comprising:

a single programmable hardware processor having a reconfigurable set of logic blocks;

an audio/video input/output processor having inputs for receiving and outputting the digital video and digital audio and having outputs bi-directionally coupled to the single programmable hardware processor to provide input audio/video from the audio/video input/output processor to the single programmable hardware processor and to provide processed audio/video from the single programmable hardware processor to the audio/video input/output processor; and

a general purpose processor having a flash memory, the general purpose processor being bi-directionally coupled to the single programmable hardware processor and to a data link for remote access and the flash memory being accessible by the single programmable hardware processor.

2. The engine as recited in claim 1 further comprising a digital signal processor bi-directionally coupled to the single programmable hardware processor for access to the audio/video input/output processor and the general purpose processor.

3. The engine as recited in claim 1 wherein the single programmable hardware processor comprises a RAM-based field programmable gate array.

4. The engine as recited in claim 1 wherein the audio/video I/O processor comprises:

a video processor for converting input digital video into an appropriate video format for the single programmable hardware processor and converting processed digital video from the single programmable hardware processor into output digital video; and

an audio processor for decoding input digital audio into an appropriate audio format for the single programmable hardware processor and converting processed digital audio from the single programmable hardware processor into output digital audio.

5. The engine as recited in claim 4 wherein the video processor comprises means for extracting embedded digital audio from the input digital video for input to the audio processor as the input digital audio.

6. The engine as recited in any of claims 1-5 further comprising an additional memory bi-directionally coupled to the single programmable hardware processor.

7. The engine as recited in claim 6 wherein the additional memory comprises:

a video buffer memory bi-directionally coupled to the single programmable hardware processor; and

a general purpose memory bi-directionally coupled to the single programmable hardware processor.