Method and apparatus to facilitate transmission of an encrypted rolling code

A method comprising:

• receiving, at a receiver capable of receiving various selectable types of transmissions, a transmission of a recovery content portion of a joint message in a first particular way of the various selectable types of transmissions, wherein recovery content in the recovery content portion corresponds to a transmission characteristic selected based at least in part on a message content portion of the joint message, wherein the various selectable types of transmissions differ from one another as a function, at least in part, of corresponding transmission characteristics;
• extracting, by a joint message processor operably coupled to the receiver, the recovery content from the joint message, wherein the recovery content corresponds to transmission characteristics of the joint message;
• selecting from the various selectable types of transmissions, at a transmission characteristic selector of the receiver in response to receipt of the joint message, a second particular way of receiving a transmission of the message content portion of the joint message as a function, at least in part, of the extracted recovery content;
• configuring, by the transmission characteristic selector, the receiver to receive the message content portion of the joint message in the second particular way;
• and
• receiving, at the receiver using the second particular way, the message content portion comprising message content.

An apparatus comprising:

• a receiver capable of receiving various selectable types of transmissions, wherein the various selectable types of transmissions differ from one another as a function, at least in part, of corresponding transmission characteristics, and wherein the receiver is configured to receive a transmission of a joint message comprising recovery content and message content and to receive the message content in a message content portion of the joint message using a selected one of the various selectable types of transmissions identified from the recovery content, the selected one of the various selectable types of transmissions selected based at least in part on the message content;
• a transmission characteristic selector operably coupled to a control input of the receiver, wherein the transmission characteristic selector is responsive to recovery content input such that the transmission characteristic selector configures the receiver according to the recovery content within a recovery content portion of the joint message in response to receipt of the joint message, wherein the recovery content corresponds to the transmission characteristic;
• and
• a joint message processor operably coupled to the receiver and to the recovery content input of the transmission characteristic selector, wherein the joint message processor is configured to extract the recovery content from the joint message.

A method for use with a receiver that is configured and arranged to compatibly receive and process a transmitted joint message, wherein:

• a first portion of the joint message comprises message content that is transmitted using a selected transmission characteristic selected from a plurality of different transmission characteristics based at least in part on at least a portion of the message content;
• and
• a second portion of the joint message comprises a recovery identifier that is transmitted using a different transmission characteristic, wherein the recovery identifier corresponds to the different transmission characteristic;
• the method comprising:
• at a transmitter:
• transmitting the first portion of the joint message to the receiver, the first portion of the joint message enabling the receiver to configure itself to receive the second portion of the joint message comprising the message content according to the recovery identifier;
• and
• transmitting the second portion of the joint message to the receiver.

A method comprising:

• selecting, at a transmitter, a transmission characteristic from among a plurality of different transmission characteristics from a group comprising a particular data order and a particular data inversion pattern, the selected transmission characteristic selected based at least in part on a portion of message content;
• selecting, at the transmitter, a recovery identifier correlated to the selected transmission characteristic from a plurality of different recovery identifiers, wherein the plurality of different recovery identifiers comprise at least one of a particular data order identifier or a particular data inversion pattern identifier, wherein a portion of individual ones of the plurality of different recovery identifiers is correlated to a given corresponding one of the plurality of different transmission characteristics;
• and
• transmitting, from the transmitter, a joint message to a receiver, the joint message comprising:
• the selected recovery identifier;
• and
• the message content;
• wherein a first portion of the joint message comprising the message content is transmitted using the selected transmission characteristic, and
• wherein a second portion of the joint message comprising the selected recovery identifier is configured to enable the receiver to configure itself in response to receipt of the second portion of the joint message according to the selected recovery identifier to allow the receiver to receive the first portion of the joint message comprising the message content.

A portable movable barrier remote control transmitter comprising:

• a transmitter configured to communicate with a movable barrier operator, and capable of various selectable types of transmission, wherein the various selectable types of transmission differ from one another as a function, at least in part, of corresponding transmission characteristics, and wherein a plurality of recovery content indicators individually has a portion that corresponds to a corresponding one of the transmission characteristics;
• and
• a joint message formatter having an input operably coupled to receive message content and the plurality of recovery content indicators, the joint message formatter having a joint message output operably coupled to the transmitter to provide a joint message comprising both the message content and one or more of the plurality of recovery content indicators as corresponds to one of the transmission characteristics selected based at least in part on a portion of the message content,
• wherein a first portion of the joint message comprising the recovery content indicator is configured to allow a receiver of the movable barrier operator to configure itself in response to receipt of the first portion of the joint message according to the one of the transmission characteristics to allow the receiver to receive a second portion of the joint message comprising the message content.