A method and apparatus for radio broadcasting including a transmitter which transmits substantially continuous program material, such as background music, on one subcarrier and a plurality of sequential messages, each accompanied by coded signals identifying its beginning and end, on a second subcarrier, and a receiver for receiving the continuous program material and the messages. A loudspeaker is connected to the receiver to reproduce the continuous program material until selected coded signal...

A wired broadcasting system in which subscribers are connected through individual cables to a programme exchange incorporating means actuable by a subscriber for selecting a particular one of a plurality of programmes to be transmitted to the subscriber through his own individual channel. Means are provided for allocating the programmes into three or more groups, and means are provided at the exchange or at the subscriber units for selectively denying two or some of the groups of programmes to s...

A wired television broadcasting program exchange provides a signal channel for at least one auxiliary dc or low-frequency signal of a nature that will perform the auxiliary functions of unscrambling, conversion to wide-band operation or other controls to equipment at a subscriber's station.

A broadcasting receiver for setting beforehand, a threshold of free disk space of a file system on a Hard Disk Drive (HDD), detection of record termination of a specified program investigates the free disk space of the HDD. The present free disk space is compared with the threshold level of free disk space set up beforehand. If the present free disk space is smaller than the threshold level, a message indicating the free disk space has decreased is displayed automatically, and, if necessary, the...

A broadcasting reception apparatus includes a display unit for presenting a display showing a plurality of channels, with which the user can recognize whether decoding software programs for decoding program signals being currently broadcast via each channel are held in a library buffer, or not, thereby making possible pleasant zapping.

A satellite broadcasting tuner by use of which high-definition television broadcasting of a satellite broadcasting channel can be received in a high quality. The satellite broadcasting tuner receives a satellite broadcasting channel selected by a channel selecting microcomputer, and when frame synchronizing data of the high-definition television system are detected from within audio data of the received channel, the reception frequency for the channel is fixed to receive the high-definition tele...

Broadcasting system digitizes audio input signals before RF modulating and transmitting over airwaves to one or more remote receiving stations. Receiving station recovers the digitized signal by demodulating and exponentially expanding the received RF signal. Recovered digital signal is subsequently frequency modulated and sent, via an electrically conductive cable, to an FM radio, over which the original audio input signals are faithfully reproduced. A time switch in series with the RF receiver...

A compatible multivoice broadcasting receiver is disclosed which can receive both Korean multivoice broadcasting and American multivoice broadcasting and commonly process the one-carrier component (L+R) of Korean multivoice broadcasting and the main channel signal (L+R) of American multivoice broadcasting. In addition to the existing multivoice broadcasting receiver, the multivoice broadcasting receiver further comprises a buffer section that operates the outputs L+R signal detector, L-R and SAP...

The present invention which involves a digital broadcasting system provides a digital broadcasting method in which change information NETQ for indicating the broadcast content change is transmitted a certain period of time in advance by a primary transmission system when the primary transmission system broadcasts programs. As the result, a secondary transmission system, for example, a cable television system which reedits and rebroadcasts the programs received from a digital satellite broadcasti...

The digital broadcasting station describes the first unique information as identification information in addition to the event identification prescribed by ARIB standard as opposed to LIT describing the detailed information of local event. The first unique information is for example a date of amended Julian calendar. Therefore, the digital broadcasting receiver can identify the digital broadcasting program uniquely for a long term based on the event identification and the first unique informatio...