GB2260869A - A radio receiver in the form of an audio cassette - Google Patents
A radio receiver in the form of an audio cassette Download PDFInfo
- Publication number
- GB2260869A GB2260869A GB9221295A GB9221295A GB2260869A GB 2260869 A GB2260869 A GB 2260869A GB 9221295 A GB9221295 A GB 9221295A GB 9221295 A GB9221295 A GB 9221295A GB 2260869 A GB2260869 A GB 2260869A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radio receiver
- radio
- receiver
- output device
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/08—Constructional details, e.g. cabinet
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/049—Cassettes for special applications not otherwise provided for
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B31/00—Arrangements for the associated working of recording or reproducing apparatus with related apparatus
- G11B31/003—Arrangements for the associated working of recording or reproducing apparatus with related apparatus with radio receiver
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
A radio receiver 1 has circuits (5) mounted in a housing 2 which is the same shape as that of an audio cassette. Output from the receiver is from an audio-inductive coupler 4. The user inserts the receiver into a cassette recorder and on pressing the "Play" button the radio broadcast may be listened to. The invention thus avoids the need for purchase of a special radio which can receive special frequencies such as short-wave. The orientation of the cassette, detected using sensors, may be used to determine which of two fixed reception frequencies is used. Preset messages may be used to inform the user that a signal is being received. <IMAGE>
Description
"A radio receiver"
The invention relates to radio receivers.
Conventional radio receivers are tunable over a range of frequencies to enable users to choose a desired broadcasting channel. However, this range of frequencies generally does not include some frequencies which would be useful in certain circumstances. For example, most conventional radio receivers are not designed for reception of broadcasts in the short-wave band which is suitable for broadcasting over large distances.
The obvious solution to this problem is to produce a radio receiver which is tunable to these frequencies. However, a problem with this is that it would be difficult to persuade people to buy such radio receivers if they already own a receiver.
The invention is directed towards providing a radio receiver to overcome this problem.
According to the invention, there is provided a radio receiver comprising a radio reception circuit and an output device mounted within a housing, wherein the output device comprises means for interfacing with a tape reading head.
In one embodiment, the housing is of similar shape to that of an audio cassette.
In another embodiment, the output device is an audioinductive coupler. Alternatively, the output device is a stereo tape head.
In a further embodiment, the housing includes sensors connected to the signal processing circuit for control of the receiver. The sensors may be mounted for detection of the orientation of the housing with a cassette player.
Preferably, the reception circuit comprises a means for storing pre-set messages and transmitting them to the output device on reception of an activating radio signal.
The invention will be more clearly understood from the following description of some embodiments thereof, given by way of example only with reference to the accompanying drawings in which:
Fig. 1 is a perspective view of a radio receiver of the
invention, and
Fig. 2 is a circuit diagram showing a signal processing
circuit of the radio receiver.
Referring to the drawings, there is illustrated a radio receiver of the invention, indicated generally by the reference numeral 1. The radio receiver 1 is not tunable and is dedicated for reception of a single broadcast frequency. The receiver 1 is mounted in a housing 2 which is of the same shape as that of a conventional audio cassette. The receiver 1 also includes a flexible antenna 3 and an output device, namely, an audio-inductive coupler 4 which is in the position for inductive coupling with tape reading heads of a conventional cassette recorder.
Referring to Fig. 2 a reception or signal processing circuit mounted within the housing 2 is illustrated in detail. The circuit 5 comprises a bandpass filter 6 connected to the antenna 3 and which provides a basic selectivity function. This is connected to a pre amplifier 7 which includes an automatic gain control circuit for minimising the effects of signal excursions and also to ensure that the amplifier operates in a linear fashion so as to avoid cross-modulation and intermodulation. The pre-amplifier 7 is connected to a noise gate 8 for removal of interferance pulses such as car ignition and other fast rise time pulses. The noise gate 8 includes a series of diodes which are switched from a conducting to a non-conducting mode when a pulse of interference is received.The noise gate 8 is connected to an RF amplifier 9 which is essentially wide-band in nature and is connected to a narrow band filter 10 which selects the desired frequency from it. The output of the narrow band filter is connected to a detection and automatic gain control (AGC) circuit 11 for audio frequency amplification, if required. The signal is then fed to the audio-inductive coupler 4.
Power from the circuit 5 is derived from a small battery located within the housing 2. Alternatively it may be from an external source such as the electrical circuit of a motor vehicle.
In use, the radio receiver 1 may be stored with cassette tapes and if one wishes to listen to radio broadcasting at a particular frequency, the receiver 1 is simply inserted into a cassette recorder just like a conventional cassette tape. On pressing the "play" button on the tape recorder the reading heads of the tape recorder are coupled with the inductive coupler 4 and the reading heads "see" a signal which is just like the signal off a magnetic tape passing by the head. It then processes the signal through the tape reading circuitry for output at a speaker. Thus, audio output from the radio receiver 1 comes from a tape recorder such as that conventionally known as a "Walkmana or alternatively a vehicle tape recorder or any other tape recorder.Accordingly, the radio receiver 1 may be manufactured very inexpensively so that users would wish to buy it so that they may listen to a certain radio broadcast frequency and may simply carry it around together with cassette tapes. This is a major improvement over the prior art as heretofore it would have been necessary to change one's radio to receive an additional frequency, which is expensive, particularly when installed in a motor vehicle.
What has been achieved by the invention is the utilisation of existing equipment to allow users to conveniently listen to a new broadcast frequency, a circuit mounted within a small housing being all that is required. An example of a situation where the invention would be particularly useful is where a person travels abroad and wishes to listen to a home channel broadcast on short wave.
The invention is not limited to the embodiments hereinbefore described. For example, it is envisaged that instead of the audio-inductive coupler 4, a stereo tape head may be used which would be spring-biased for direct contact with the reading head of a tape recorder for the handling of stereo signals. It is also envisaged that two or more frequencies may be received, depending on the construction of the signal processing circuit. For selection of the frequencies, a button may be incorporated into the housing. Alternatively, sensors located at the same position as conventional protection tabs on cassette tapes may be used to detect which side of the tape has been inserted for selection of a channel. It is envisaged that opto-couplers and/or photoelectric cells in close proximity to the sprocket may be used for tuning and it is also envisaged that Hall-effect devices may be used.
The signal processing circuit of the invention may include a memory for storage of pre-set messages which are outputted on reception of a radio activating signal at the antenna 3.
Many different embodiments of the invention are envisaged, the most important feature of the invention being the use of an output device which interfaces with the reading heads of a tape recorder.
The invention is not limited to the embodiments hereinbefore described, but may be varied in construction and detail.
Claims (8)
1. A radio receiver comprising a radio reception circuit
and an output device mounted within a housing, wherein
the output device comprises means for interfacing with
a tape reading head.
2. A radio receiver as claimed in claim 1, wherein the
housing is of similar shape to that of an audio
cassette.
3. A radio receiver as claimed in claims 1 or 2, wherein
the output device is an audio-inductive coupler.
4. A radio receiver as claimed in claims 1 or 2, wherein
the output device is a stereo tape head.
5. A radio receiver as claimed in any preceding claim,
wherein the housing includes sensors connected to the
signal processing circuit for control of the receiver.
6. A radio receiver as claimed in any of claims 2 to 5,
wherein the sensors are mounted for detection of the
orientation of the housing within a cassette player.
7. A radio receiver as claimed in any preceding claim,
wherein the reception circuit comprises a means for
storing pre-set messages and transmitting them to the
output device on reception of an activating radio
signal.
8. A radio receiver substantially as hereinbefore
described with reference to and as illustrated in the
accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE351691 | 1991-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9221295D0 GB9221295D0 (en) | 1992-11-25 |
GB2260869A true GB2260869A (en) | 1993-04-28 |
Family
ID=11038780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9221295A Withdrawn GB2260869A (en) | 1991-10-09 | 1992-10-09 | A radio receiver in the form of an audio cassette |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2260869A (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1106720A (en) * | 1966-11-04 | 1968-03-20 | Arcadi Voltas | Improvements in or relating to an accessory for converting a magnetic tape recorder to a radio receiver |
GB1212518A (en) * | 1966-12-07 | 1970-11-18 | Automatic Radio Mfg Company In | Improvements in and relating to sound reproducing systems |
GB1226749A (en) * | 1967-10-19 | 1971-03-31 | ||
GB1232084A (en) * | 1967-06-20 | 1971-05-19 | ||
GB1257398A (en) * | 1969-03-26 | 1971-12-15 | ||
US4034164A (en) * | 1975-08-25 | 1977-07-05 | Westmoland Randy C | Citizens band cartridge for tape decks |
EP0044216A1 (en) * | 1980-07-15 | 1982-01-20 | Kabushiki Kaisha Toshiba | Magnetic reproducing apparatus capable of receiving radio broadcast programmes and a tuner unit insertable in magnetic reproducing apparatus |
EP0044678A1 (en) * | 1980-07-15 | 1982-01-27 | Kabushiki Kaisha Toshiba | Magnetic reproducing apparatus capable of receiving radio broadcast programmes |
GB2098821A (en) * | 1981-03-20 | 1982-11-24 | Chan Kong Philip | Radio receiver |
EP0191361A1 (en) * | 1982-10-01 | 1986-08-20 | Kabushiki Kaisha Toshiba | Apparatus for transporting tape in a cassette |
-
1992
- 1992-10-09 GB GB9221295A patent/GB2260869A/en not_active Withdrawn
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1106720A (en) * | 1966-11-04 | 1968-03-20 | Arcadi Voltas | Improvements in or relating to an accessory for converting a magnetic tape recorder to a radio receiver |
GB1212518A (en) * | 1966-12-07 | 1970-11-18 | Automatic Radio Mfg Company In | Improvements in and relating to sound reproducing systems |
GB1232084A (en) * | 1967-06-20 | 1971-05-19 | ||
GB1226749A (en) * | 1967-10-19 | 1971-03-31 | ||
GB1257398A (en) * | 1969-03-26 | 1971-12-15 | ||
US4034164A (en) * | 1975-08-25 | 1977-07-05 | Westmoland Randy C | Citizens band cartridge for tape decks |
EP0044216A1 (en) * | 1980-07-15 | 1982-01-20 | Kabushiki Kaisha Toshiba | Magnetic reproducing apparatus capable of receiving radio broadcast programmes and a tuner unit insertable in magnetic reproducing apparatus |
EP0044678A1 (en) * | 1980-07-15 | 1982-01-27 | Kabushiki Kaisha Toshiba | Magnetic reproducing apparatus capable of receiving radio broadcast programmes |
US4488273A (en) * | 1980-07-15 | 1984-12-11 | Tokyo Shibaura Denki Kabushiki Kaisha | Magnetic reproducing apparatus capable of receiving radio broadcast programs |
GB2098821A (en) * | 1981-03-20 | 1982-11-24 | Chan Kong Philip | Radio receiver |
EP0191361A1 (en) * | 1982-10-01 | 1986-08-20 | Kabushiki Kaisha Toshiba | Apparatus for transporting tape in a cassette |
Also Published As
Publication number | Publication date |
---|---|
GB9221295D0 (en) | 1992-11-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |