US5365500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key control method and control device for a cassette tape recorder
Assignee: LG Electronics Inc
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Filing: 1991-12-19
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Granted: 1994-11-15
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Expires: 2011-12-19
Abstract
Abstract A cassette tape recorder including input key means having one or more keys, each key capable of representing a plurality of functions selectable by the user to be performed. The control means provides a control signal in response to at least one of the functions selected by the user and the recorder performs the selected function in response to the control signal. Since each key can represent several functions, it will make the recorder more simple in construction, inexpensive and easy to operate.
Inventors
- 👤 Sung G. Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:09
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/16; H04B1/20; H04B1/205; G; G11; G11B; G11B15/00; G11B15/02; G11B15/026; G11B15/10; G11B15/103; G11B31/00; G11B31/003; Y; Y10; Y10S; Y10S358/00; Y10S358/906
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
A method of controlling operation of a cassette tape recorder with a radio coupled thereto, said cassette tape recorder having one or more keys each representing a plurality of possible functions selectable by the user of the recorder, comprising the steps of: manipulating at least one of said one or more keys to represent one of a plurality of possible functions selectable by the user of the recorder to be performed; providing a control signal in response to a selected function; and performing the selected function in response to said control signal; providing a mode signal indicating if one of the recorder and radio was selected by the user; and providing an indication that one of the recorder and radio is operative in response to said mode indicating signal.
Claim 2
Independent Claim
129 words
A method of controlling operation of a cassette tape recorder with a radio coupled thereto, said cassette tape recorder having one or more keys each representing a plurality of possible functions selectable by the user of the recorder, comprising the steps of: manipulating at least one of said one or more keys to represent one of a plurality of possible functions selectable by the user of the recorder to be performed; providing a control signal in response to a selected function; and performing the selected function in response to said control signal; providing a mode signal indicating if one of the recorder and radio was selected by the user; and providing an indication that one of the recorder and radio is operative in response to said mode indicating signal.
Claim 3
Dependent Claim
32 words
The method of claim 1, wherein said step of manipulating includes the substep of manipulating said key a plurality of times, each time representing a different one of said plurality of functions.
Claim 4
Independent Claim
139 words
A method of controlling operation of a cassette recorder, said recorder includes first and second keys capable of activated to generate key signals representing a plurality of functions selectable by the user to be performed and an input pot generating a mode signal representing an operational mode of the recorder, comprising the steps of: determining whether said first second keys are turned on; executing a key check routine; detecting said key signal from said executed key check routine; executing a radio key check routine if said key signal is detected and said input pot generates a high-level signal; executing a Play/Stop/Direction key check routine if said first key is activated and the input pot generates a low-level signal; and executing a Rewind/Fast-Forward/Radio key check routine if said second key is activated and the input pot generates a low-level signal.
Claim 5
Independent Claim
139 words
A method of controlling operation of a cassette recorder, said recorder includes first and second keys capable of activated to generate key signals representing a plurality of functions selectable by the user to be performed and an input pot generating a mode signal representing an operational mode of the recorder, comprising the steps of: determining whether said first second keys are turned on; executing a key check routine; detecting said key signal from said executed key check routine; executing a radio key check routine if said key signal is detected and said input pot generates a high-level signal; executing a Play/Stop/Direction key check routine if said first key is activated and the input pot generates a low-level signal; and executing a Rewind/Fast-Forward/Radio key check routine if said second key is activated and the input pot generates a low-level signal.
Claim 6
Dependent Claim
95 words
The method of claim 3, wherein said step of executing a Rewind/Fast-Forward key check routine includes the substeps of: setting a rewind mode if said second key is activated within a first predetermined time period; delaying a predetermined time period if said activated state of said second key is maintained for more than a second predetermined time period; executing a radio key check routine if said second key is not activated within said first predetermined time period; and executing a Fast-Forward mode if said second key is activated again within said second predetermined time period.
Claim 7
Dependent Claim
135 words
The method of claim 3, wherein said step of executing a Radio key check routine includes the such steps of: executing a radio on-setting routine if said first key is deactivated and the radio is inoperative; executing a main routine if said first key is activated and the radio is inoperative; executing the main routine when said first key is activated and the radio is activated; executing the main routine when said first key is deactivated and said second key is not activated; activating a key scan timer when said second key is activated; executing a radio off set routine when said key scan timer is activated for more than a predetermined period time; and extending a preset memory time of the radio if said key scan times is deactivated within said predetermined period time.
Claim 8
Dependent Claim
63 words
The method of claim 5, wherein said step of executing a radio on-setting routine includes the substeps of: executing the main routine if a present state the recorder is not a stop mode; activating the key scan timer if the present state is the stop mode; and activating the radio when said key scan timer is kept activated for a predetermined period time.
Claim 9
Dependent Claim
80 words
A cassette tape recorder, comprising: a plurality of pressure activated key switches for controlling operations of said cassette tape recorder; each of said pressure activated key switches performing a plurality of operating functions dependent on the number of times each key is pressed; control means, coupled to said plurality of pressure actuated key switches for providing control signals for said operating functions; and means, coupled to said control means, for performing said operating functions in response to said control signals.
Claim 10
Dependent Claim
80 words
A cassette tape recorder, comprising: a plurality of pressure activated key switches for controlling operations of said cassette tape recorder; each of said pressure activated key switches performing a plurality of operating functions dependent on the number of times each key is pressed; control means, coupled to said plurality of pressure actuated key switches for providing control signals for said operating functions; and means, coupled to said control means, for performing said operating functions in response to said control signals.
Claim 11
Dependent Claim
18 words
The cassette tape recorder of claim 7, wherein said pressure activated key switches are operable by user contact.
Claim 12
Dependent Claim
62 words
The cassette tape recorder of claim 7, wherein said recorder is coupled to a radio, further comprising input pot means for providing a mode signal indicating that one of the recorder and radio was selected by the user; and means coupled to said control means for indicating that one of said recorder and radio is operative in response to said mode signal.
Claim 13
Dependent Claim
45 words
The cassette tape recorder of switches claim 9, wherein said key of from input key means adaptable to be manipulated by the user of the recorder a plurality of times, each time representing a different one of said plurality of functions selected by the user.
Claim 14
Dependent Claim
53 words
The cassette tape recorder of claim 9, wherein said plurality of key switches includes first and second keys and said first key represents play, stop direction of play functions of the recorder and said second key represents rewind, fast-forward functions of the recorder and radio on/off and tuner present functions of the radio.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-14 | 1998-05-16 | 1998-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-14 | 2002-05-16 | 2002-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-14 | 2006-05-16 | 2006-11-15 | $7700.00 | Window Closed / Lapsed |