GB1471712A - Radio or television receiver with an automatic station finding arrangement - Google Patents
Radio or television receiver with an automatic station finding arrangementInfo
- Publication number
- GB1471712A GB1471712A GB4885874A GB4885874A GB1471712A GB 1471712 A GB1471712 A GB 1471712A GB 4885874 A GB4885874 A GB 4885874A GB 4885874 A GB4885874 A GB 4885874A GB 1471712 A GB1471712 A GB 1471712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- station
- counter
- receiver
- output
- store
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0254—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter
- H03J5/0263—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being transfered to a D/A converter the digital values being held in an auxiliary non erasable memory
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
1471712 Automatic station seeking receiver INTERNATIONAL STANDARD ELECTRIC CORP 12 Nov 1974 [16 Nov 1973 (2)] 48858/74 Heading H3Q In a stop on signal radio or TV receiver in which the tuning is determined by the output of a D/A converter 5, Fig. 3, controlled by the output of a counter 7 driven from a pulse generator 6 until stopped by sensing a received signal, a store 15, 16 and/or 26 for storing a particular output from the counter has an output connected to an input of the counter and circuitry is associated with a setting input P of the counter so as to selectively transfer the digital signal at the counter input A1-An to the counter output Q1-Qn. The tuning section 1 includes varacter timing elements and the pulse generator 6 is started by a button 11. On detection of a received signal an output from a demodulator in 1 operates a toggle 10 to stop the pulse generator 6. A recall data store including series connected parallel data stores 15 and 16 formed on an integrated circuit 25 functions on operation of a recall switch 29 to recall the tuning setting to the previously received station as stored in the store 16. The counter 7 is then set to the count of the bit word stored in data store 16 and the new count is entered into the store 15. A station tuning data storage device 26 can be provided which is disclosed in more detail in a car radio receiver embodiment as circuit (39, Fig. 6, not shown). The station on which the counter 7 is stopped can be written in a station data store (38 1 -38 8 ) by operating a station selector switch (37) and a write switch (46) to select via a storing code converter (54) and a switchable decoder (53) the store (38) associated with that selector switch such as (37 L ). The stored station can be recalled by pressing the selector switch (37 L ) the final pressing of which operates recall switch (47) so that the counter 7 is set with the bit word at the output of a selection matrix corresponding to the station stored in the associated data store (38). The station currently received is indicated by an indicator (57) fed from a binary to decimal code converter (56). Also a dial indicator (59) is formed of a band of light-emitting diodes along a frequency or station dial. To prevent the contents of the station memories from being lost in the "off" state of the receiver at least the station memories are always connected to a power source such as a battery 62. This also enables the station to which the receiver was tuned when the receiver was turned off to be tuned to on switching on the receiver.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732357359 DE2357359C3 (en) | 1973-11-16 | Radio or television receiver with a seek tuning | |
DE19732357360 DE2357360C3 (en) | 1973-11-16 | Radio or television receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1471712A true GB1471712A (en) | 1977-04-27 |
Family
ID=25766116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4885874A Expired GB1471712A (en) | 1973-11-16 | 1974-11-12 | Radio or television receiver with an automatic station finding arrangement |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1471712A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000402A (en) * | 1977-06-20 | 1979-01-04 | Pioneer Electronic Corp | Multiband radio receiver with electronic preset tuning system |
-
1974
- 1974-11-12 GB GB4885874A patent/GB1471712A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000402A (en) * | 1977-06-20 | 1979-01-04 | Pioneer Electronic Corp | Multiband radio receiver with electronic preset tuning system |
GB2000402B (en) * | 1977-06-20 | 1982-02-03 | Pioneer Electronic Corp | Multiband radio receiver with electronic preset tuning system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |