Method for switching input terminal based on incoming signal format

A method comprising:

• transmitting a signal in a digital format;
• receiving the transmitted signal in a digital format at a digital input terminal (120) of a receiver;
• issuing a command (106) to the receiver when a format of the transmitted signal has changed from a digital format to an analog format;
• switching to an analog input terminal (122) of the receiver (12) from the digital input terminal (120) to receive the transmitted signal according to the command.

A method comprising:

• transmitting a signal in an analog format;
• receiving the transmitted signal in an analog format at an analog input terminal (122) of a receiver (12);
• issuing a command (106) to the receiver when a format of the transmitted signal has changed from an analog format to a digital format;
• switching to a digital input terminal (120) of the receiver from the analog input terminal (122) to receive the transmitted signal according to the command.

A method comprising:

• transmitting a signal in a digital format;
• transmitting a signal in an analog format;
• receiving a transmitted signal in a digital format at a digital input terminal (120) of a receiver (12) and receiving a transmitted signal in an analog format at an analog input terminal (122) of the receiver;
• issuing a first command (106) to the receiver (12) when a format of a transmitted signal has changed from a digital format to an analog format;
• selecting an analog input terminal (122) of the receiver (12) to receive the transmitted signal according to the first command;
• issuing a second command (106) to the receiver (12) when a format of the transmitted signal has changed from an analog format to a digital format;
• and
• selecting a digital input terminal (120) of the receiver (12) to receive the transmitted signal according to the second command.

An apparatus comprising:

• a transmitter (10) for transmitting a signal, the transmitter comprising a command generator (106) for issuing a command,
• a first output terminal coupled to the command generator, and
• a device to generate the signal in one of a first format and a second format,
• wherein the command generator issues the command when a format of the generated signal has changed from one of a first format to a second format, and from the second format to the first format.