Pioneer Electronic Corporation

Shinichi Abe

Takashi Miyake

Kazuhiro Kamiya

Toshiyuki Kimura

Yutaro Ishikawa

Shoji Suenaga

Mutsurou Tanoue

Mutsurou Tanque

Jun Miyamura

This RBDS receiver comprises a database having broadcasting station related information. The receiver is provided with a read-only database memory in which broadcasting station related data have been stored respectively in association with geographical positional information, the broadcasting station related data including broadcasting station identification data, program type identification data and receptiond frequency data; a demodulator system for demodulating the RBDS data from received broadcast waves; a randomly accessible database supplementary memory; and a control system for comparing the RBDS data with the broadcasting station related data and the data stored in the supplementary memory to perform write control for writing the RBDS data into the supplementary memory if a broadcasting station indicated by the RBDS data is not coincident with any of broadcasting stations indicated by the broadcasting station related data and the data stored in the supplementary memory. According to the present invention, the database can be supplemented immediately and accurately in response to updates and revisions of the contents of actually broadcast programs. Also, the control for display and so on can be appropriately performed in accordance with the contents of actually broadcast programs.

RBDS receiver provided with a database having broadcasting station

Multiplex broadcast receiving method and receiver which can easily update the preset contents of classification information, such as a program type, in an RDS broadcasting. The RDS receiver is constituted by a memory control section for storing the classification information (PTY code) demodulated from RDS broadcast waves which are being received into a PTY memory; the PTY memory for storing the classification information; and a station selecting section for selecting a station of the multiplex broadcast waves regarding the classification information by reading out the classification information from the PTY memory. This enables the use of the classification information of the broadcasting station being received as it is, so that the user can store the favorite program type by a simple operation.

Multiplex broadcast receiving method and receiver with program type

A receiver with automatic tuning function includes: unit for dividing an area where broadcasting stations exist into a plurality of blocks and storing block information relating to the blocks; unit for storing station information relating to each of the broadcasting stations located in the block in association with the block information of the block; unit for storing block information of a current block and blocks surrounding the current block; unit for selecting a broadcasting station out of the plurality of broadcasting stations located in the current block by referring to the station information associated with the block information of the current block; unit for receiving electric wave from the station selected; unit for judging receiving condition of the electric wave and outputting a judgement signal; and unit for renewing the current block.

Receiver with automatic tuning function

A multiplex broadcasting station selecting method which can execute a station selecting operation in group units is provided. A PTY code to be compared and a channel are set to one set of large classification information. The user sequentially calls out the PTY codes to be designated to one group and depresses the same channel key or the like each time the desired PTY code is called, thereby storing into memory the large classification information in which a plurality of PTY codes are made correspond to a same channel number. When executing a retrieving operation, the user depresses one operation key. The large classification information corresponding to the channel number is consequently selected and the group having a similar genre can be retrieved as set. The user can receive either one of or all of the broadcasting stations in the large classification information of the group. A process such that the group is allocated to each of the channels which was conventionally impossible can be executed, so that the range of application of the RDS broadcasting is broadened.

Growing community of inventors

Kawagoe, Japan

Shinichi Abe