Patent ID: 6992728
Filing Date: 2006-01-31
Classification: H04H,H04N

Abstract:
1. A broadcast receiving system with a function of on-screen displaying channel information by a display device comprising: an input device for inputting an operation instruction to the system; a receiver for receiving coded digital/analog broadcasting signals transmitted from a broadcasting station; a digital/analog decoder for decoding the digital/analog broadcasting signals received by the receiver and outputting them to an image-displaying display device connected to the system; a memory for storing the channel information included in the broadcasting signals decoded by the digital decoder; an on-screen display output circuit for making the display device to display a predetermined on-screen display; and a control unit for controlling the system, wherein the system receives the digital broadcasting signals and the analog broadcasting signals transmitted from the broadcasting stations with respective channels different from each other, and the digital broadcasting signals include one or a plurality of sub-channels to transmit contents for each channel, and given to these sub-channels are virtual channels consisting of the same channel number as for the analog broadcasting and of the sub-channel number; characterized in that, the control unit controls the system such that the receiver receives the broadcasting signals of a receivable channel in response to an instruction of received channel information addition/deletion or an instruction of channel change inputted by the input device, the digital decoder decodes these broadcasting signals for analyzing the channel information from the decoded signals, the display device on-screen display displays a list of the channel information of the analog broadcasting and of the virtual channel of the digital broadcasting with the digital/analog channel information mixed, and the channel information analyzed from the decoded signals is compared with the channel information stored in the memory so that the system distinguishes a channel having become newly receivable, and the on-screen display displays the distinguished channel information; and said control unit has: a data deleting section for deleting the stored data of the memory in response to a user operation instruction specifying the deletion of the sub-channel having become unable to receive among the list the on-screen display displayed in the display device; and a data adding section for adding the stored data of the memory in response to a user operation instruction specifying the addition of the sub-channel having become newly receivable.