Broadcast delay line

• US 4,282,606 A
• Filed: 04/12/1979
• Issued: 08/04/1981
• Est. Priority Date: 04/12/1979
• Status: Expired due to Term

• Current Assignee: Eventide, Inc.
• Original Assignee: Eventide Clockworks Incorporated
• Inventors: Factor, Richard
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US06/029,213
• Time in Patent Office: 845 Days
• Field of Search: 179/1 MN, 179/1 SW, 360/7, 365/45, 365/221, 365/239, 455/620
• US Class Current: 455/899
• CPC Class Codes: H03H 17/0009 Time-delay networks
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios
• CPC Class Codes: H04H 60/27 Arrangements for recording or accumulating broadcast information or broadcast-related information

Abstract

The disclosure relates to a digital delay line especially suitable for broadcasting live audio programs. The memory of the digital delay line is of sufficient extent to produce a delay of about 6 seconds or more. The device is provided with a Dump button whereby one who is monitoring the program can, upon hearing an obscenity or a libellous remark, press the Dump button and change the program to real time eliminating the libellous or obscene remark. The device is provided with means to return the program to the full delay time without any or without substantial glitches.

Claims

1. A broadcasting delay line for delaying audible signals for up to several seconds or more, comprising an analogue to digital converter for sampling and converting audible signals to a digital number capable of being stored, a random access memory adapted to store a series of digital numbers corresponding to the longest delay period, means to retrieve said digital numbers in the order in which they were stored after a delay of up to several seconds, a digital to analogue converter adapted to convert the numbers retrieved from the random access memory to provide the original analog value, amplifier means to amplify the received analog signals and provide the output, manually controlled means adapted to switch the retrieval of signals stored in said memory from the said delay time to real time and means to switch the retrieval of signals stored in said memory back again to the delay time in a series of jumps, each of said jumps being a fraction of the total delay time.

2. A broadcasting delay line as claimed in claim 1 comprising means for detecting when a pause occurs during the broadcast, and means for executing a jump when a pause occurs whereby the broadcast during the jump becomes inaudible.