Digital video audio processing apparatus

• US 5,754,254 A
• Filed: 01/05/1996
• Issued: 05/19/1998
• Est. Priority Date: 01/10/1995
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Nonaka, Ryuji, Kobayashi, Seiji, Takamori, Tsutomu
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US08/583,549
• Time in Patent Office: 865 Days
• Field of Search: 348/578, 348/705, 348/706, 348/222, 348/738, 348/541, 348/553, 348/552, 348/555, 386/96, 386/54
• US Class Current: 348/578
• CPC Class Codes: G11B 27/032 on tapes G11B27/036, G11B27/038 take precedence
• CPC Class Codes: H04H 20/10 Arrangements for replacing or switching information during the broadcast or the distribution
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios
• CPC Class Codes: H04N 5/268 Signal distribution or switching

Abstract

A digital video audio processing apparatus in which serial signal formed digital video signals and digital audio signals, which are supplied to a plurality of input terminals and are multiplexed each other, are converted into parallel signal form respectively; the digital video signals and digital audio signals are separated respectively; switching processing or video special effect processing is performed on a plurality of digital video signals; switching processing or mixing processing is performed on a plurality of digital audio signals; and these processed digital video signals and digital audio signals are multiplexed each other to convert into serial signal form and output them.

Claims

1. A digital video/audio processing apparatus comprising:

a plurality of input terminals to which each input terminal receives a digital video signal and a digital audio signal multiplexed in serial signal form;

first conversion means for converting each said digital video signal and digital audio signal multiplexed in serial signal form to a plurality of said input terminals into parallel signal form respectively;

demultiplexing means for respectively separating digital video signals from digital audio signals converted into parallel signal form by said conversion means;

video signal processing means, to which plural digital video signals respectively separated by said demultiplexing means are supplied, for performing switching processing or video special effect processing on the supplied plural digital video signals;

audio signal processing means, to which plural digital audio signals respectively separated by said demultiplexing means are supplied, for performing switching processing or mixing processing on the supplied plural digital audio signals;

multiplexing means, to which the processed digital video signal and digital audio signal output from said video signal processing means and said audio signal processing means are supplied, for multiplexing the video-processed digital video signal with the audio-processed digital audio signal; and

second conversion means for converting said digital video signal and digital audio signal multiplexed by said multiplexing means into serial signal form.

2. The digital video/audio processing apparatus according to claim 1, wherein

said serial signal formed digital video signal and digital audio signal which are multiplexed each other are supplied from the digital video/audio signal processing apparatus.

3. A digital video/audio processing apparatus for processing a plurality of serial signals, each serial signal reproduced from a digital VTR as a digital video signal multiplexed with an audio digital signal, said apparatus comprising:

a plurality of input terminals, each input terminal receiving a respective serial signal;

serial-to-parallel conversion means coupled to said input terminals for converting each serial signal received at each input terminal into a parallel signal;

demultiplexing means coupled to said serial-to-parallel conversion means for demultiplexing each parallel signal generated by said serial-to-parallel conversion means;

digital video signal processing means coupled to said demultiplexing means for performing special digital processing on digital video signals demultiplexed by said demultiplexing means;

digital audio signal processing means, separate from said digital video signal processing means, coupled to said demultiplexing means for performing special digital processing on digital audio signals demultiplexed by said demultiplexing means;

multiplexing means coupled to both said digital video signal processing means and said digital audio signal processing means for multiplexing digital video and audio signals processed by said digital video signal processing means and said digital audio signal processing means respectively;

parallel-to-serial conversion means coupled to said multiplexing means for converting digital video and audio signals multiplexed by said multiplexing means into respective serial signals; and

output terminals for outputting said serial signals converted by said parallel-to-serial conversion means.

4. A digital video/audio processing apparatus for processing a plurality of serial signals, each serial signal reproduced from a digital VTR as a digital video signal multiplexed with an audio digital signal, said apparatus comprising:

a plurality of input terminals, each input terminal receiving a respective serial signal;

a serial-to-parallel converter coupled to said input terminals for converting each serial signal received at each input terminal into a parallel signal;

a demultiplexer coupled to said serial-to-parallel converter for demultiplexing each parallel signal generated by said serial-to-parallel converter;

a digital video signal processor coupled to said demultiplexer for performing special digital processing on digital video signals demultiplexed by said demultiplexer;

a digital audio signal processor, separate from said digital video signal processor, coupled to said demultiplexer for performing special digital processing on digital audio signals demultiplexed by said demultiplexer;

a multiplexer coupled to both said digital video signal processor and said digital audio signal processor for multiplexing digital video and audio signals processed by said digital video signal processor and said digital audio signal processor respectively;

a parallel-to-serial converter coupled to said multiplexer for converting digital video and audio signals multiplexed by said multiplexer into respective serial signals; and

output terminals for outputting said serial signals converted by said parallel-to-serial converter.