Transmission/reception system and method for data broadcast, and transmission apparatus for data broadcast

A transmission and reception method for data broadcast used in a system including a transmission apparatus which transmits a data broadcasting content and a receiving apparatus which receives and presents the transmitted data broadcasting content comprising:

• a presentation schedule time obtaining step for obtaining a presentation schedule time when the data broadcasting content is to be presented;
• a data broadcasting contents transmission step for starting to transmit the data broadcasting content before the presentation schedule time by the transmission apparatus;
• a message transmission step for transmitting a presentation start instruction message at the presentation schedule time by the transmission apparatus;
• a data broadcasting contents reception and presentation step for receiving the transmitted data broadcasting content and invisibly presenting the data broadcasting content by the receiving apparatus, the invisible presentation of the data broadcasting content meaning a state where a series of processes relating to the presentation prior to a process by which the data broadcasting content becomes visible are performed, and the broadcasting content still remains invisible;
• and
• a data broadcasting contents visualization step for, visualizing the invisibly presented data broadcasting content by the receiving apparatus, when the transmitted presentation start instruction message is received.

A transmission apparatus which transmits a data broadcasting content to a receiving apparatus which receives and presents the data broadcasting content, comprising:

• a presentation schedule time obtaining means for obtaining a presentation schedule time when the data broadcasting content is to be presented;
• a data broadcasting contents transmission means for
• (a) starting to transmit a preceding data broadcasting content including first control information including an instruction which instructs the receiving apparatus to, when an invisible presentation instruction message is received, start to receive the data broadcasting content and designate the data broadcasting content_as an object for presentation,
• (b) after the start of transmission of the preceding data broadcasting content, and before the presentation schedule time,
• starting to transmit the data broadcasting content including image structure information in order to an image as an object for presentation and second control information,
• the second control information includes
• (a) an instruction which instructs the receiving apparatus to, when the data broadcasting content becomes the object for interpretation, form the image according to the image structure information and keep the image being in an invisible state, and
• (b) an instruction which instructs the receiving apparatus to, when the presentation start instruction message is received, change the invisible state of the image into a visible state;
• and
• a message transmission means for
• (a) transmitting the invisible presentation instruction message when the data broadcasting contents transmission means starts to transmit the data broadcasting content,
• (b) transmitting the presentation start instruction message at the presentation schedule time.

A control program for enabling a transmission apparatus to perform a content transmission process in which the transmission apparatus transmits a data broadcasting content to a receiving apparatus which receives and presents the data broadcasting content,

• the content transmission process comprising:
• a presentation schedule time obtaining step for obtaining a presentation schedule time when the data broadcasting content is to be presented;
• a data broadcasting content transmission step for
• (a) starting to transmit a preceding data broadcasting content including first control information including an instruction which instructs the receiving apparatus to, when an invisible presentation instruction message is received, start to receive the data broadcasting content and designate the data broadcasting content as an object for presentation,
• (b) after the start of transmission of the preceding data broadcasting content, and before the presentation schedule time,
• starting to transmit the data broadcasting content including image structure information in order to an image as an object for presentation and second control information,
• the second control information includes
• (a) an instruction which instructs the receiving apparatus to, when the data broadcasting content becomes the object for interpretation, form the image according to the image structure information and keep the image in an invisible state, and
• (b) an instruction which instructs the receiving apparatus to, when the presentation start instruction message is received, change the invisible state of the image into a visible state;
• and
• a message transmission step for
• (a) transmitting the invisible presentation instruction message when the data broadcasting contents transmission means starts to transmit the data broadcasting content,
• (b) transmitting the presentation start instruction message at the presentation schedule time.