Signal switching apparatus and program

• US 20040066792A1
• Filed: 09/30/2003
• Published: 04/08/2004
• Est. Priority Date: 10/03/2002
• Status: Active Grant

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Okabayashi, Masaaki
• Granted Patent: US 7,558,392 B2
• Time in Patent Office: Days
• US Class Current: 370/419
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios

Abstract

A signal switching apparatus is provided which is capable of performing checking in a manner that a plurality of output channels can be discriminated in checking the assignment of the plurality of output channels to buses to which signals are input. A plurality of signals input to a mix bus comprised of six buses are selectively output to two analog outputs in accordance with assignment performed by an output assigning device. First checking signals for three channels among six channels from a first oscillator are directly input to an adjuster, and first checking signals for the rest of the six channels from the first oscillator are input to a signal switching device. Second checking signals for all of three channels from a second oscillator are input to the checking signal switching device. The checking signal switching device selectively outputs the input first or second checking signals to the adjuster. The adjuster selectively outputs the input first and second checking signals to desired buses and at desired volumes in accordance with settings of the adjuster, and the first and second checking signals are output via respective analog outputs in accordance with settings of the output assigning device.

Claims

1. A signal switching apparatus that assigns a plurality of signals input to a mix bus comprising a plurality of buses, to respective desired output channels assigned to respective ones of the buses, and outputs the plurality of signals via the output channels, comprising:

a plurality of checking signal generating devices that generate checking signals different from each other; and

a checking signal input device that causes the checking signals generated by said plurality of checking signal generating devices to be selectively input to respective desired buses of the mix bus.

2. A signal switching apparatus according to claim 1, wherein the plurality of buses are grouped into a plurality of groups.

3. A signal switching apparatus according to claim 2, wherein said checking signal input device comprises a selecting device that selects desired checking signals to be input to part of the plurality of groups from among the plurality of checking signals, and wherein the checking signals selected by said selecting device are input to all of the buses belonging to the part of the plurality of groups.

4. A signal switching apparatus according to claim 2, wherein said checking signal input device causes part of the plurality of checking signals to be always input to all of buses belonging to a predetermined part of the plurality of groups.

5. A program executed by a computer, for assigning a plurality of signals input to a mix bus comprising a plurality of buses, to desired output channels assigned to respective ones of the buses and outputting the plurality of signals via the output channels, comprising:

a checking signal generating module for generating a plurality of checking signals different from each other; and

a checking signal input module for causing the plurality of checking signals generated by said checking signal generating module to be selectively input to respective desired buses of the mix bus.