CA2251377C - Radio receiver for digital audio broadcasts including messages as well as radio programs - Google Patents
Radio receiver for digital audio broadcasts including messages as well as radio programs Download PDFInfo
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- CA2251377C CA2251377C CA 2251377 CA2251377A CA2251377C CA 2251377 C CA2251377 C CA 2251377C CA 2251377 CA2251377 CA 2251377 CA 2251377 A CA2251377 A CA 2251377A CA 2251377 C CA2251377 C CA 2251377C
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- filter device
- radio receiver
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/20—Aspects of broadcast communication characterised by the type of broadcast system digital audio broadcasting [DAB]
Abstract
The radio receiver (100) for digital radio broadcasts containing different message signal types has a loudspeaker output (16) and a message filter device (28) that passes or conveys only certain predetermined types of message signals to the loudspeaker output and interrupts a current state of the radio receiver (100) to make the preselected messages audible but suppresses the remaining types of message signals so that the current state of the radio receiver is not influenced by those latter signals. The message filter device has different states. These states in a preferred embodiment are designated only, for example, with "OFF", "ON" and "PS". "ON" means that the special message having this attribute is conveyed to the loudspeaker output through the filter device, i.e. the filter device is in the active state. "PS" expands the filter action, since only those programs are selected which contain message signals having this attribute when the program is changed, i.e. when the receiver is tuned to a new program. "OFF" indicates the state of the filter device is not active for message signals having this attribute, i.e. messages of this type are ignored and not passed through the filter device.
Description
RADIO RECEIVER FOR DIGITAL AUDIO BROADCASTS INCLUDING
MESSAGES AS WELL AS RADIO PROGRAMS
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to a radio receiver for digital radio broadcasts (Digital Audio Broadcasts or DAB broadcasts) with at least one loudspeaker output, and, more particularly, to a digital radio receiver for simultaneous reception of priority digital messages and radio programs.
MESSAGES AS WELL AS RADIO PROGRAMS
BACKGROUND OF THE INVENTION
1. Field of the Invention The present invention relates to a radio receiver for digital radio broadcasts (Digital Audio Broadcasts or DAB broadcasts) with at least one loudspeaker output, and, more particularly, to a digital radio receiver for simultaneous reception of priority digital messages and radio programs.
2. Prior Art Digital radio broadcasting or also "Digital Audio Broadcasting", abbreviated DAB, is a new type of broadcasting of wireless radio programs. The radio programs are no longer broadcast, as is common up to now in VHF
broadcasting, as analog signals modulated on a carrier signal, but are transmitted in digital form. A conventional radio receiver, for example an auto radio, however cannot convert this new form of broadcast radiation or waves into a program that can be heard by a user. Instead new receiving equipment designed for this form of transmission is required that is designated as a "DAB receiver" or "radio receiver for DAB broadcasts".
In a corresponding manner as with Radio-Data-Systems (RDS) for the currently conventional analog radio broadcasts in the VHF band, different types of message or information signals for DAB are defined, for example traffic message signals. In the current analog RDS system radio transmitters are provided with RDS and traffic messages are indicated in a signal device of the radio receiver with "TP"
(Traffic Program/Radio Program with traffic information). This indicates to the user that the instant radio transmitter offers this service. A "TA" (Traffic Announcement/traffic messages) key activates RDS operation and the "TA" signal appears in the signal device and signals the user that the RDS
or the traffic message system is active.
An RDS message signal, such as a traffic message signal, interrupts the program that is currently being trans-mitted from the radio transmitter to the RDS radio receiver in each case. A radio program with RDS message signals only needs to be monitored by the user during, for example, the playing of a CD or a music cassette in the background. When a message signal is detected the radio program is switched to the loudspeaker outputs momentarily interrupting the playing of the CD or music cassette so that the user can actually hear the actual traffic message. Similarly a user can temporarily mute the radio program and have the RDS radio receiver automatically unmute the radio program when a traffic signal is identified as being present in it.
However this current analog RDS system has the disadvantage that traffic message signals are only available at a predetermined time, namely when they are broadcast. In contrast, necessarily no traffic message signals are available immediately prior to the initial travel of the motor vehicle.
However it is at this time that the first decisions regarding the travel route are made and an actual traffic information at this time could be of significant value as an aid to making such decisions.
In the new DAB system different types of message signals, subsequently also designated as DAB message signals, do not interrupt programs being broadcast, but are broadcast in parallel data channels that are parallel to the running program according to the digital character of the broadcast.
In other words, the different signals arrive without interruption of a running program, If the user would like to hear the actual current new DAB message signal, he or she can activate a suitable function in the DAB receiver so that the detected DAB signals can be heard immediately temporarily interrupting the current radio program. The user can also choose whether he or she hears the current radio program without interruption or whether he or she hears the actual DAB
message signals during a suitable program interruption.
According to ETS 300 401 however additionally besides the conventional advisory signals "alarm", "traffic message", "news" and "weather advisory", as already defined in the RDS-system, also "public conveyance messages", "warning", "event information" and "special message" are defined. Besides these eight already defined DAB message signal types at least eight other distinct information signal types are possible, but have not up to now been defined or used. For the user this creates the problem that he or she either hears all the information signal types or none. This is however unsatisfactory, since he or she is, for example, only interested in traffic information, however not event information.
broadcasting, as analog signals modulated on a carrier signal, but are transmitted in digital form. A conventional radio receiver, for example an auto radio, however cannot convert this new form of broadcast radiation or waves into a program that can be heard by a user. Instead new receiving equipment designed for this form of transmission is required that is designated as a "DAB receiver" or "radio receiver for DAB broadcasts".
In a corresponding manner as with Radio-Data-Systems (RDS) for the currently conventional analog radio broadcasts in the VHF band, different types of message or information signals for DAB are defined, for example traffic message signals. In the current analog RDS system radio transmitters are provided with RDS and traffic messages are indicated in a signal device of the radio receiver with "TP"
(Traffic Program/Radio Program with traffic information). This indicates to the user that the instant radio transmitter offers this service. A "TA" (Traffic Announcement/traffic messages) key activates RDS operation and the "TA" signal appears in the signal device and signals the user that the RDS
or the traffic message system is active.
An RDS message signal, such as a traffic message signal, interrupts the program that is currently being trans-mitted from the radio transmitter to the RDS radio receiver in each case. A radio program with RDS message signals only needs to be monitored by the user during, for example, the playing of a CD or a music cassette in the background. When a message signal is detected the radio program is switched to the loudspeaker outputs momentarily interrupting the playing of the CD or music cassette so that the user can actually hear the actual traffic message. Similarly a user can temporarily mute the radio program and have the RDS radio receiver automatically unmute the radio program when a traffic signal is identified as being present in it.
However this current analog RDS system has the disadvantage that traffic message signals are only available at a predetermined time, namely when they are broadcast. In contrast, necessarily no traffic message signals are available immediately prior to the initial travel of the motor vehicle.
However it is at this time that the first decisions regarding the travel route are made and an actual traffic information at this time could be of significant value as an aid to making such decisions.
In the new DAB system different types of message signals, subsequently also designated as DAB message signals, do not interrupt programs being broadcast, but are broadcast in parallel data channels that are parallel to the running program according to the digital character of the broadcast.
In other words, the different signals arrive without interruption of a running program, If the user would like to hear the actual current new DAB message signal, he or she can activate a suitable function in the DAB receiver so that the detected DAB signals can be heard immediately temporarily interrupting the current radio program. The user can also choose whether he or she hears the current radio program without interruption or whether he or she hears the actual DAB
message signals during a suitable program interruption.
According to ETS 300 401 however additionally besides the conventional advisory signals "alarm", "traffic message", "news" and "weather advisory", as already defined in the RDS-system, also "public conveyance messages", "warning", "event information" and "special message" are defined. Besides these eight already defined DAB message signal types at least eight other distinct information signal types are possible, but have not up to now been defined or used. For the user this creates the problem that he or she either hears all the information signal types or none. This is however unsatisfactory, since he or she is, for example, only interested in traffic information, however not event information.
' 22386-2670 Summary of the Invention It is an object of embodiments of the present invention to provide an improved radio receiver for DAB
broadcasts of the above-described type that eliminates the above-described disadvantage and allows the user to use the DAB message or information signal types in a more comfortable and efficient manner.
According to one aspect of the invention, there is provided a radio receiver for DAB broadcasts including a radio program and message signals of different types, said radio receiver having a current state, and comprising: at least one loudspeaker output; a message filter device comprising means for conveying only predetermined types of said message signals to the at least one loudspeaker output, means for interrupting said current state so that said predetermined types of said message signals conveyed to the at least one loudspeaker output by the means for conveying are made audible during an interruption of the current state, and means for suppressing remaining ones of said message signals so that said current state is not affected;
and means for controlling the message filter device including means for receiving inputs from a user selecting the predetermined types of said message signals, wherein an attribute is assigned to the selected predetermined message types, with which it is determined whether a message type should be suppressed or should interrupt the current state.
The radio receiver according to one embodiment of the invention has the advantage that a user can determine which DAB messages interrupt the programs he is currently hearing in the receiver's current state, in which the user is listening to a radio program or recorded music produced from a CD or tape cassette, and can suppress the other remaining DAB messages.
There are several preferred embodiments of the invention set forth in the dependent claims appended herein-4a below.
A single message program key can be provided for simple and convenient operation, which activates or deactivates the message filter device according to choice in a predetermined manner by a first predetermined operation, which preferably is a comparatively brief or short pressing of the message program key, for example for a second or less.
An individual selection of the predetermined message types can be initiated by a second predetermined operation of the message program key in which the radio receiver is switched into a configuration mode in which the message types to be suppressed and those to be conveyed to the at least one loudspeaker output are selected. Advantageously the second predetermined operation of the message program key is a comparatively longer pressing of the message program key, for example longer than one second.
In the preferred embodiments the preferred message types include "alarm messages", "traffic messages", "messages regarding public conveyances", "warnings", "news", "weather advisories", "event messages" and "special messages".
In a preferred embodiment of the radio receiver of the invention the momentary or current state of the radio receiver is a receiver state in which a radio program or recorded music, for example from a CD or a cassette, is made audible for the user, by means of a loudspeaker output or outputs and/or a muting circuit of the radio receiver.
Brief Description of the Drawing The objects, features and advantages of the invention will now be illustrated in more detail with the aid of the following description of the preferred embodiments, with reference to the accompanying sole figure which is a block diagram of a preferred embodiment of a radio receiver for digital audio broadcast waves according to the invention.
Description of the Preferred Embodiments The preferred embodiment of a radio receiver 100 for digital audio broadcast waves according to the invention shown in the sole figure comprises a receiver section 12 with an unshown input filter, demodulator, D/A converter and suitable NF processor. An evaluation of the different data channels of the received signals occurs in the receiver section 12. The signal of the data channel with the radio program is conveyed into the amplifier 14 as NF with a basic adjustment and is made audible to the user by means of the loudspeaker output 16 and the loudspeaker 18.
A signalling device 20 connected with the receiver section 12 provides the user with different information, such as the currently tuned reception frequency. Control keys 24 and 26 for controlling the receiver section 12 are provided in a control section 22.
A message filter device 28 continuously tests the appropriate data channels of the received signal for DAB
message signals, such as "alarm", "traffic information", "news", "weather advisory", "public traffic agent", "warning", "event information" and "special message". If a message is detected, according to the mode set by the control section the message is ignored or the receiver section 12 is controlled so that the DAB message is conducted from the message filter device 28, for example by means of cable or line 34, to the NF
amplifier 14 instead of the running program.
The message filter device 28 can also be integrated in the receiver section 12 or arranged in the signal path between the antenna 10 and the loudspeaker 18.
For example, four modes for analysis or evaluation of the message types are provided:
In a first mode the DAB messages are ignored.
However an information signal appears in the signalling device in this mode that indicates the types of information present in the signal which the receiver section is currently receiving. No signals of any type means e.g. that no DAB
messages are supported. A signal "TP" means that DAB traffic messages were transmitted, but no other messages. A signal "TP+" means that other signals in addition to the traffic message were transmitted and these can be filtered selectively by means of the message filter 28 as desired or not. A signal "P+" means for example that traffic signals are not supported 20 however other messages are.
In a second mode all detected traffic messages and only the traffic messages are delivered during an inter-ruption of the currently running program at the loudspeaker output 16. This second mode is, for example, indicated as "TA" at the signalling device 20. This signal indicates an exclusive active support of only the traffic messages.
In a third mode only certain predetermined types of DAB message signals besides the traffic signals are delivered to the loudspeaker output 16 during an interruption of the currently running program. This third mode is indicated in the signalling device 20 for example with "TA+ . This signal indicates then an active support of traffic messages and at least one additional message type, which however is not directly known in this embodiment. This message type is set in the message filter, as explained in more detail in the following description.
In a fourth mode only predetermined DAB message signals are delivered to the loudspeaker output 16 during an interruption of the currently running program and traffic messages are counted among the suppressed DAB message signals.
This fourth mode is indicated for example with "A+" in the signalling device. This signal indicates thus the deactivation of the support for the traffic messages, however at least one other message is actively supported. This is set by means of the message filter device.
For example, a brief operation of the message program key 24, which is indicated preferably the "TA+", operation of the receiver can be switched between these modes.
A push button operation of the functions of the message filter device 28 is thus possible by means of this message program key 24. The message types may be controlled with this key 24 "TA+", i.e. activating, deactivating, active message interruption, etc. and also a function-related menu can be retrieved by pressing the key for a longer time, for example longer than 1 second.
In a menu of this type individual attributes of those message types that should be suppressed and those message types that should be delivered to the loudspeaker output during an interruption of a running program may be set.
For example the following attributes are provided:
"OFF": The running radio program is not interrupted if the message type has this attribute.
"ON": When the selected program supports message types with this attribute, these message types are switched to loudspeaker output 16 during an interruption of the running ' radio program. However program broadcasts that do not support these message types are received and offered during automatic program operation.
PS": is like "ON" however only those program broadcasts are offered which support these message types during automatic program operation.
The calling up of the selection menu for determining the named attributes occurs, for example, by pressing the "TA+" key 24 for a comparatively longer time, for example longer than one second. Then the different message types are shown on the signalling device 20 and are selectable by means of the up/down key 30. The attribute of a selected message type is selected by successively repeatedly pressing the front/back key 32 so that the attribute is changed from one attribute, i.e. from "OFF", "ON" or "PS", to the next attribute each time the key is pressed. When all the attributes for the different message types are selected, the "TA+" key 24 is pressed again to make this mode configuration final and the actual set up according to the selected attributes is activated.
The message filter is equipped further in a preferred manner so that on detecting a message of the type provided with the "ON" attribute a muting circuit of the receiver is activated to interrupt the running program and the actual message is conducted to the loudspeaker output 16.
The message filter thus takes different states.
These different states in the present embodiment are indicated only with "OFF", "ON" or "PS". "ON" means that the special message with this attribute is conveyed through the message filter. "PS" means that the filtering is broadened, since only those programs are selected during program changes that support the message types designated as "PS" types. "OFF"
indicates that the filter is not active for these message types, i.e. messages of this type are ignored and are not passed through the filter.
A necessarily supported alarm message takes a special position. This message is always switched active in the special case of a mobile receiver, i.e. indicated as "ON"
in the message filter, and thus is not manually selectable during set up of the message filter. Correspondingly it is not considered with the other signals of "empty", "TA","TA+
and "A+".
In a special embodiment the radio receiver according to the invention also includes an RDS(Radio Data System) receiving section and can selectively process an analog FM-signal with an RDS-signal or a digital signal with DAB
broadcasts, according to which signal would provide the optimum instant reception, wherein a digital signal is given priority as much as possible.
The expression "radio broadcast" used here is not limited to wireless transmission of a radio program, but includes other transmission media, such as cable transmission or the like.
The instant selected filter mode of the message filter device processes the preferred message types of the currently selected radio programs received by the receiver.
These messages can be transmitted with the radio signal itself or for example also in an additional channel. In a preferred embodiment the message filter monitors also other radio transmission channels not currently being received, conveys their messages in its radio signal or in an additional channel and conveys these messages to the loudspeaker outputs if the messages received have an "ON"
attribute.
While the invention has been illustrated and described as embodied in a radio receiver for digital audio broadcasts including radio programs and messages, it is not intended to be limited to the details shown, since various modifications and changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
What is claimed is new and is set forth in the following appended claims.
broadcasts of the above-described type that eliminates the above-described disadvantage and allows the user to use the DAB message or information signal types in a more comfortable and efficient manner.
According to one aspect of the invention, there is provided a radio receiver for DAB broadcasts including a radio program and message signals of different types, said radio receiver having a current state, and comprising: at least one loudspeaker output; a message filter device comprising means for conveying only predetermined types of said message signals to the at least one loudspeaker output, means for interrupting said current state so that said predetermined types of said message signals conveyed to the at least one loudspeaker output by the means for conveying are made audible during an interruption of the current state, and means for suppressing remaining ones of said message signals so that said current state is not affected;
and means for controlling the message filter device including means for receiving inputs from a user selecting the predetermined types of said message signals, wherein an attribute is assigned to the selected predetermined message types, with which it is determined whether a message type should be suppressed or should interrupt the current state.
The radio receiver according to one embodiment of the invention has the advantage that a user can determine which DAB messages interrupt the programs he is currently hearing in the receiver's current state, in which the user is listening to a radio program or recorded music produced from a CD or tape cassette, and can suppress the other remaining DAB messages.
There are several preferred embodiments of the invention set forth in the dependent claims appended herein-4a below.
A single message program key can be provided for simple and convenient operation, which activates or deactivates the message filter device according to choice in a predetermined manner by a first predetermined operation, which preferably is a comparatively brief or short pressing of the message program key, for example for a second or less.
An individual selection of the predetermined message types can be initiated by a second predetermined operation of the message program key in which the radio receiver is switched into a configuration mode in which the message types to be suppressed and those to be conveyed to the at least one loudspeaker output are selected. Advantageously the second predetermined operation of the message program key is a comparatively longer pressing of the message program key, for example longer than one second.
In the preferred embodiments the preferred message types include "alarm messages", "traffic messages", "messages regarding public conveyances", "warnings", "news", "weather advisories", "event messages" and "special messages".
In a preferred embodiment of the radio receiver of the invention the momentary or current state of the radio receiver is a receiver state in which a radio program or recorded music, for example from a CD or a cassette, is made audible for the user, by means of a loudspeaker output or outputs and/or a muting circuit of the radio receiver.
Brief Description of the Drawing The objects, features and advantages of the invention will now be illustrated in more detail with the aid of the following description of the preferred embodiments, with reference to the accompanying sole figure which is a block diagram of a preferred embodiment of a radio receiver for digital audio broadcast waves according to the invention.
Description of the Preferred Embodiments The preferred embodiment of a radio receiver 100 for digital audio broadcast waves according to the invention shown in the sole figure comprises a receiver section 12 with an unshown input filter, demodulator, D/A converter and suitable NF processor. An evaluation of the different data channels of the received signals occurs in the receiver section 12. The signal of the data channel with the radio program is conveyed into the amplifier 14 as NF with a basic adjustment and is made audible to the user by means of the loudspeaker output 16 and the loudspeaker 18.
A signalling device 20 connected with the receiver section 12 provides the user with different information, such as the currently tuned reception frequency. Control keys 24 and 26 for controlling the receiver section 12 are provided in a control section 22.
A message filter device 28 continuously tests the appropriate data channels of the received signal for DAB
message signals, such as "alarm", "traffic information", "news", "weather advisory", "public traffic agent", "warning", "event information" and "special message". If a message is detected, according to the mode set by the control section the message is ignored or the receiver section 12 is controlled so that the DAB message is conducted from the message filter device 28, for example by means of cable or line 34, to the NF
amplifier 14 instead of the running program.
The message filter device 28 can also be integrated in the receiver section 12 or arranged in the signal path between the antenna 10 and the loudspeaker 18.
For example, four modes for analysis or evaluation of the message types are provided:
In a first mode the DAB messages are ignored.
However an information signal appears in the signalling device in this mode that indicates the types of information present in the signal which the receiver section is currently receiving. No signals of any type means e.g. that no DAB
messages are supported. A signal "TP" means that DAB traffic messages were transmitted, but no other messages. A signal "TP+" means that other signals in addition to the traffic message were transmitted and these can be filtered selectively by means of the message filter 28 as desired or not. A signal "P+" means for example that traffic signals are not supported 20 however other messages are.
In a second mode all detected traffic messages and only the traffic messages are delivered during an inter-ruption of the currently running program at the loudspeaker output 16. This second mode is, for example, indicated as "TA" at the signalling device 20. This signal indicates an exclusive active support of only the traffic messages.
In a third mode only certain predetermined types of DAB message signals besides the traffic signals are delivered to the loudspeaker output 16 during an interruption of the currently running program. This third mode is indicated in the signalling device 20 for example with "TA+ . This signal indicates then an active support of traffic messages and at least one additional message type, which however is not directly known in this embodiment. This message type is set in the message filter, as explained in more detail in the following description.
In a fourth mode only predetermined DAB message signals are delivered to the loudspeaker output 16 during an interruption of the currently running program and traffic messages are counted among the suppressed DAB message signals.
This fourth mode is indicated for example with "A+" in the signalling device. This signal indicates thus the deactivation of the support for the traffic messages, however at least one other message is actively supported. This is set by means of the message filter device.
For example, a brief operation of the message program key 24, which is indicated preferably the "TA+", operation of the receiver can be switched between these modes.
A push button operation of the functions of the message filter device 28 is thus possible by means of this message program key 24. The message types may be controlled with this key 24 "TA+", i.e. activating, deactivating, active message interruption, etc. and also a function-related menu can be retrieved by pressing the key for a longer time, for example longer than 1 second.
In a menu of this type individual attributes of those message types that should be suppressed and those message types that should be delivered to the loudspeaker output during an interruption of a running program may be set.
For example the following attributes are provided:
"OFF": The running radio program is not interrupted if the message type has this attribute.
"ON": When the selected program supports message types with this attribute, these message types are switched to loudspeaker output 16 during an interruption of the running ' radio program. However program broadcasts that do not support these message types are received and offered during automatic program operation.
PS": is like "ON" however only those program broadcasts are offered which support these message types during automatic program operation.
The calling up of the selection menu for determining the named attributes occurs, for example, by pressing the "TA+" key 24 for a comparatively longer time, for example longer than one second. Then the different message types are shown on the signalling device 20 and are selectable by means of the up/down key 30. The attribute of a selected message type is selected by successively repeatedly pressing the front/back key 32 so that the attribute is changed from one attribute, i.e. from "OFF", "ON" or "PS", to the next attribute each time the key is pressed. When all the attributes for the different message types are selected, the "TA+" key 24 is pressed again to make this mode configuration final and the actual set up according to the selected attributes is activated.
The message filter is equipped further in a preferred manner so that on detecting a message of the type provided with the "ON" attribute a muting circuit of the receiver is activated to interrupt the running program and the actual message is conducted to the loudspeaker output 16.
The message filter thus takes different states.
These different states in the present embodiment are indicated only with "OFF", "ON" or "PS". "ON" means that the special message with this attribute is conveyed through the message filter. "PS" means that the filtering is broadened, since only those programs are selected during program changes that support the message types designated as "PS" types. "OFF"
indicates that the filter is not active for these message types, i.e. messages of this type are ignored and are not passed through the filter.
A necessarily supported alarm message takes a special position. This message is always switched active in the special case of a mobile receiver, i.e. indicated as "ON"
in the message filter, and thus is not manually selectable during set up of the message filter. Correspondingly it is not considered with the other signals of "empty", "TA","TA+
and "A+".
In a special embodiment the radio receiver according to the invention also includes an RDS(Radio Data System) receiving section and can selectively process an analog FM-signal with an RDS-signal or a digital signal with DAB
broadcasts, according to which signal would provide the optimum instant reception, wherein a digital signal is given priority as much as possible.
The expression "radio broadcast" used here is not limited to wireless transmission of a radio program, but includes other transmission media, such as cable transmission or the like.
The instant selected filter mode of the message filter device processes the preferred message types of the currently selected radio programs received by the receiver.
These messages can be transmitted with the radio signal itself or for example also in an additional channel. In a preferred embodiment the message filter monitors also other radio transmission channels not currently being received, conveys their messages in its radio signal or in an additional channel and conveys these messages to the loudspeaker outputs if the messages received have an "ON"
attribute.
While the invention has been illustrated and described as embodied in a radio receiver for digital audio broadcasts including radio programs and messages, it is not intended to be limited to the details shown, since various modifications and changes may be made without departing in any way from the spirit of the present invention.
Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
What is claimed is new and is set forth in the following appended claims.
Claims (10)
1. A radio receiver for DAB broadcasts including a radio program and message signals of different types, said radio receiver having a current state, and comprising:
at least one loudspeaker output;
a message filter device comprising means for conveying only predetermined types of said message signals to the at least one loudspeaker output, means for interrupting said current state so that said predetermined types of said message signals conveyed to the at least one loudspeaker output by the means for conveying are made audible during an interruption of the current state, and means for suppressing remaining ones of said message signals so that said current state is not affected; and means for controlling the message filter device including means for receiving inputs from a user selecting the predetermined types of said message signals, wherein an attribute is assigned to the selected predetermined message types, with which it is determined whether a message type should be suppressed or should interrupt the current state.
at least one loudspeaker output;
a message filter device comprising means for conveying only predetermined types of said message signals to the at least one loudspeaker output, means for interrupting said current state so that said predetermined types of said message signals conveyed to the at least one loudspeaker output by the means for conveying are made audible during an interruption of the current state, and means for suppressing remaining ones of said message signals so that said current state is not affected; and means for controlling the message filter device including means for receiving inputs from a user selecting the predetermined types of said message signals, wherein an attribute is assigned to the selected predetermined message types, with which it is determined whether a message type should be suppressed or should interrupt the current state.
2. The radio receiver as defined in claim 1, wherein the means for controlling the message filter device further includes means for activating the message filter device so that said message filter device conveys said predetermined types of said message signals to the at least one loudspeaker and means for deactivating the message filter device so that said message filter device does not suppress any of said message signals including said message signals of said predetermined types, and wherein said means for activating and means for deactivating includes a single message program key (TA+) and wherein said message filter device is successively activated and deactivated by a first predetermined operation of said message program key.
3. The radio receiver as defined in claim 2, wherein the first predetermined operation consists of pressing said message program key for a first predetermined time interval.
4. The radio receiver as defined in claim 3, wherein said first predetermined time interval is one second or less.
5. The radio receiver as defined in claim 2, wherein said means for activating and for deactivating the message filter device in response to the first predetermined operation of said message program key is also responsive to a second predetermined operation of said message program key to switch said means for controlling the message filter device into a configuration mode in which the predetermined types of said message signals conveyed by said message filter device to the at least one loudspeaker output are selected.
6. The radio receiver as defined in claim 5, wherein the first predetermined operation consists of pressing said message program key for a first predetermined time interval, and wherein said second predetermined operation of said message program key consists of pressing said message program key for a second predetermined time interval longer than said first predetermined time interval.
7. The radio receiver as defined in claim 6, wherein said second predetermined time interval is longer than one second.
8. The radio receiver as defined in claim 1, wherein the message filter device has means for responding to one of three attributes ("OFF","ON","PS") associated with each of said message signal types to automatically control processing of said message signal types by the message filter device,
9. The radio receiver as defined in claim 1, wherein said types of said message signals consist of "alarm messages", "traffic messages", "messages regarding public conveyances", "warnings", "news", "weather advisories", "event messages" and "special messages".
10. The radio receiver as defined in claim 1, wherein said current state is a receiver state in which a radio program or recorded music is made audible for the user by means of the at least one loudspeaker output and a muting circuit of the radio receiver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997147055 DE19747055A1 (en) | 1997-10-27 | 1997-10-27 | Radio receiver for DAB broadcasts |
| DE19747055.6 | 1997-10-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2251377A1 CA2251377A1 (en) | 1999-04-27 |
| CA2251377C true CA2251377C (en) | 2008-12-30 |
Family
ID=7846532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2251377 Expired - Fee Related CA2251377C (en) | 1997-10-27 | 1998-10-26 | Radio receiver for digital audio broadcasts including messages as well as radio programs |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0912003A3 (en) |
| CA (1) | CA2251377C (en) |
| DE (1) | DE19747055A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11274958A (en) * | 1998-03-23 | 1999-10-08 | Pioneer Electron Corp | Digital broadcast receiver |
| CA2300385A1 (en) * | 1999-03-18 | 2000-09-18 | Command Audio Corporation | Program links and bulletins for audio information delivery |
| DE19940266A1 (en) * | 1999-08-25 | 2001-03-22 | Bosch Gmbh Robert | Method for querying radio text in a radio receiver and radio receiver with one line |
| GB0421674D0 (en) * | 2004-09-30 | 2004-10-27 | Radioscope Ltd | Emergency DAB transmitter system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2567433B2 (en) * | 1987-12-14 | 1996-12-25 | パイオニア株式会社 | Radio data receiver control method |
| DE19612836A1 (en) * | 1996-03-30 | 1997-10-02 | Bosch Gmbh Robert | Procedure for the transmission of announcements and recipients |
-
1997
- 1997-10-27 DE DE1997147055 patent/DE19747055A1/en not_active Withdrawn
-
1998
- 1998-10-16 EP EP98119593A patent/EP0912003A3/en not_active Ceased
- 1998-10-26 CA CA 2251377 patent/CA2251377C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19747055A1 (en) | 1999-04-29 |
| CA2251377A1 (en) | 1999-04-27 |
| EP0912003A3 (en) | 2004-03-17 |
| EP0912003A2 (en) | 1999-04-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20151026 |