EP0507119B1 - Improved video cassette recorder - Google Patents
Improved video cassette recorder Download PDFInfo
- Publication number
- EP0507119B1 EP0507119B1 EP92104148A EP92104148A EP0507119B1 EP 0507119 B1 EP0507119 B1 EP 0507119B1 EP 92104148 A EP92104148 A EP 92104148A EP 92104148 A EP92104148 A EP 92104148A EP 0507119 B1 EP0507119 B1 EP 0507119B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fact
- video cassette
- cassette recorder
- recorder
- block
- 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 - Lifetime
Links
- 230000003213 activating effect Effects 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 4
- 230000011664 signaling Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000004397 blinking Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G15/00—Time-pieces comprising means to be operated at preselected times or after preselected time intervals
- G04G15/006—Time-pieces comprising means to be operated at preselected times or after preselected time intervals for operating at a number of different times
Definitions
- the present invention relates to a video cassette recorder, supplied with means for receiving a television program, means for recording the latter, a clock, a data memory, means for storing in said memory the time in which a program that is desired to be recorded begins and control means for reading said clock and said memory and for activating said receiving means and said means for recording the television program at the indicated time or at a pre-determined interval of time before.
- EP-A-0 351 120 describes a video cassette recorder supplied with means for receiving a television program, means for recording the latter, a clock, a data memory, means for storing in said memory, the time at which a program that is desired to be recorded begins and control means for reading said clock and said memory and for activating said receiving means and said means for recording the television program at the indicated time or at a predetermined interval of time before and the programming of the recording operation can be maintained without interfering within normal use of the recorder.
- the video recorder according to EP-A-0 351 120 reminds the user that he has made a timer programming at the videorecorder. Such reminder is realised by a periodical blinking of display means at the videorecorder display. In case that the user has displaced the cassette after the timer programming there will be displayed at the video recorder display by a blinking display that no cassette is in the video recorder. From EP-A-0 112 589 it is known a video recorder according to the preamble of claim 1.
- Such time is normally that accorded to the program that is desired to be recorded; it is however possible to program the turning on of the appliance some time before the time accorded, so as not to risk missing the beginning of the program of interest.
- an appropriate organ usually a key, that can be distinguished for example with "Timer”, be depressed.
- the key activates a delay condition and the recorder is no longer available for normal use, such as reproduction or recording, or any other possible operation; it is however possible to remove the delay condition, and then carry out the desired operation , but it is necessary that the key be newly depressed, otherwise the programming will not be effective.
- the users may be more than one, and the second may not necessarily be informed of the fact that the video recorder has been programmed to record.
- the present invention has the aim of indicating the possibility of realising a video cassette recorder that allows the use of the applicance after a recording has been carried out, having a sufficient protection system against eventual errors.
- the present invention proposes a video cassette recorder supplied with means for receiving a television program, means for recording the latter, a clock a data memory means for storing in said memory the time at which a program that is desired to be recorded begins and control means for reading said clock and said memory and for activating said receiving means and said means for recording the television program at the indicated time or at a pre-determined interval of time before and the programming of the recording operation can be maintained without interfering with the normal use of the recorder, characterized by the fact that means are provided for controlling, whether the recorder is used after having been programmed and by display means for displaying a warning message for the user whether such said use may have placed the recording of the program at risk.
- reference number 13 indicates the input for the antenna signal of the receiving block input for the antenna signal of the receiving block circuit of the video cassette recorder.
- Number 10 indicates a conventional television tuner, number 11 the customary intermediate frequency amplifier with video detector; number 12 indicates a decoding circuit of a transmitted label, associated to the television signal and containing for example a code number and the time accorded the beginning of the program, a label of this type is the beginning of the program, a label of this type is that for example provided in the system known as V.P.S. (Video Programming System).
- V.P.S. Video Programming System
- Number 1 indicates the whole of the receiving circuits 10, 11 and 12; number 16 indicates the demodulated video signal, outputted from circuit 11.
- Number 2 indicates a control unit, for example a microcomputer, that manages the system; this is connected to block 12 that receives at terminal 21 the transmitted label; it is connected to a clock calendar 4, through terminal 22 and to a memory 3 through terminal 23.
- a control unit for example a microcomputer, that manages the system
- the memory 3 is arranged so as to receive through an interface 53 the user data relative to the program to be recorded (label 37 of the desired program, and television channel 36) or any other suitable device for introducing data.
- the microcomputer 2 through the terminal 24, can address the memory 3; through terminal 25 it can control the beginning and the end of recording on the recorder 7; through terminal 26 it can control the tuner 10 so as to select the program chosen by the user; and, through terminal 27 and a supply device (15), is able to turn on or off the receiving part of the system.
- the microcomputer through terminal 28 can control an alphanumeric display 6, for displaying warning messages (for example of the LED type); through terminal 29 it can control an acoustic advisor 8 (a normal buzzer) that can be manually disconnected.
- an alphanumeric display 6 for displaying warning messages (for example of the LED type);
- an acoustic advisor 8 a normal buzzer
- microcomputer is connected through its bus, with a peripheral device, indicated with number 5, containing a programmable timer.
- the actual recorder 7 receives from block 11 the video and audio signals to be recorded through conductors 16 and 72; this being preferable a recorder of the cassette type, and is supplied with a cassette sensor, not represented in the figure, that remains active even in the stand by mode of the appliance; it also comprises a signalling system of the activation of the motor for fast forwarding or rewinding the cassette; both the cassette sensor and the signalling system of the activation of the motor are connected to the microcomputer 2.
- the microcomputer 2 may be of the type commercially available, for example a central processing unit Z8400 by S.G.S.; the peripheral device 5 may be in such a case a counter timer circuit Z8340 by the same company.
- the Z8430 is programmable via software, it is directly interfaced with the CPU and has 4 independent counters timer of 8 bit, that can be cascaded; each counter is associated to a pre-scaler, that can be commutated via software between two division values (16/256); in this way the delay can be programmed for intervals ranging from a minimum of 4 microseconds to a maximum of approximately 74 hours; at the end of the count the Z8430 can be programmed to send interrupt request to the CPU.
- any other suitable microprocessor can be utilised, and instead of the Z8430 a similar counter timer circuit that can be interfaced with the microprocessor used.
- FIG 2 a part of the logic circuit of the central control unit 2 (figure 1) is schematically represented, that enables the realisation of programming a recording.
- Such a circuit can be indifferently realised with the wired logic system or with a system of programmed logic, i.e. utilising a microprocessor; said second system is generally less expensive, as video cassette recorders generally are generally contain one or more microprocessors.
- Block 100 is the initial block of the programming operation; control passes to the successive block 101.
- Block 101 is a control block; it controls whether the user has proceeded with a programming request (for instance by means of a suitable key of the data introduction unit 53); in the affirmative case control passes to block 102; in the negative case control passes back to block 101 (in all the control blocks the inferior output is the YES output; the lateral output is the NO output).
- Block 102 provides for:
- Block 103 is the terminal block of the end of operations; control can return to the initial block 100 or another similar operative block of the control circuit.
- FIG 3 a second part of the logic circuit of the central control unit 2 is schematically represented, that enables the realisation of the programmed recording at the foreseen time.
- Block 200 is the initial block of the automatic recording operation; control arrives at block 200 as an effect of the "interrupt" command generated by the timer 5 upon the termination of the period of time stated by block 102; block 200 carried out the normal operations such as:
- Block 201 is a control block; it controls whether reception, displaying, recording or reproducing activity is underway; in the affirmative case control passes to block 202; in the negative case control passes to block 204.
- Block 203 provides for the display of a message for the user, of the type: "the programmed recording of channel X is about to begin; if not cancelled by the user by pressing key Y, it will begin within one minute”. Control is then supplied to block 203.
- Block 203 is a control block; it controls whether the cancel command takes place within one minute, in the positive case control passes to block 209; in the negative case control passes to block 204.
- Block 204 provides for starting the operation of programmed recording:
- Block 205 is a control block: a control of the label contained in signal 16 is carried out, comparing it with that (37) contained in the memory 3, if the label coincides control passes to block 206; on the contrary control passes back to block 205.
- Block 206 provides for activating the recording on behalf of the recording device 7; control then passes to block 207.
- Block 207 is a control block that provides for controlling the received label; if the label is substituted (i.e. in the case that it does not correspond to that in the memory), i.e. the program has finished, control passes to block 208; on the contrary control returns to block 207.
- Block 208 provides for interrupting the recording deactivating the receiving means 1 and the recorder 7; it also provides for lowering the programmed recording flag (RP); control therefore passes to block 209.
- Block 209 carries out the operation “return from interrupt” (RETI), that is it supplies the control to the block that had control during the moment in which the "interrupt” signal had been received.
- REFI return from interrupt
- FIG 4 a third part of the logic circuit of the central control unit 28 is schematically represented, that allows for using the recorder, after that a recording has been programmed, without any risks.
- Block 300 is the initial block of normal use operations; from block 300 control passes to block 301.
- Block 301 is a control block: control of the programmed recording flag (RP) is carried out; if the flag is raised control passes to block 302; on the contrary control passes to block 302A.
- RP programmed recording flag
- Block 302 provides for displaying on the display 6 a message of the type "Attention a recording has been programmed!; control then passes to block 302A.
- Block 302A provides for accepting the commands given by the user, but before carrying them out, passes control to block 303.
- Block 303 is a control block: control as to whether the motor of the recorder 7 has been activated is carried out, signalled by said signalling system: in the affirmative e control is passed to block 305; on the contrary control passes to block 304.
- Block 304 is a control block: control as to whether the cassette has been extracted is carried out, based on the state of the relative sensor: in the affirmative case control is passed to block 306; on the contrary control passes to block 307.
- Block 306 provides for raising the extracted cassette flag (CE); control is then supplied to block 307.
- Block 307 provides to execute the uses commands and passes the control to block 308.
- Block 308 is a control block: control is carried out of the programmed recording flag (RP); if the flag is raised control is passed to 309; on the contrary control passes to block 313.
- RP programmed recording flag
- Block 309 is a control block: control is carried out of the extracted cassette flag (CE); if the flag is raised control passes to block 310; on the contrary control passes to block 311.
- Block 310 provides for:
- Block 313 is a control block: control of the activated motor flag is carried out (PL); if the flag is raised control passes to block 312; on the contrary control is passed to block 313.
- Block 312 provides for:
- Block 313 is the final block of end of operations; control can return to block 300 or another similar operative block of the control circuit.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Television Signal Processing For Recording (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Time Recorders, Dirve Recorders, Access Control (AREA)
Description
- figure 1
- represents the block diagram of part of the electric circuit of a video cassette recorder according to the invention;
- figure 2
- schematically represents a significant part of the logic circuit of the control unit of the appliance in figure 1;
- figure 3
- schematically represents a second significant part of the logic circuit of the control unit of the appliance in figure 1;
- figure 4
- schematically represents a third significant part of the logic circuit of the control unit of the appliance in figure 1.
- asking the user for the data to be inserted in the memory 3 (program code, starting time and reception channel);
- verifying the compatibility of the data introduced;
- memorising the data in
memory 3; - calculating the intervening interval between the actual time and the time of the foreseen recording activation;
- programming the timer of the
device 5 for the calculated interval of time; - starting the
timer 5; - enabling the interrupts;
- raising a programmed recording flag (RP);
- supplying control to
block 103.
- disables the interrupts;
- saves the return address;
- reads the address of the interrupt routine;
- jumps to such address, i.e. passes control to the
successive block 201.
- by tuning in to the requested channel;
- by supplying the control to block 205.
- activating the acoustic advisor 8, that remains active until manually deactivated;
- displaying on the display a message of the type "The cassette has been extracted, has the original cassette been replaced with the tape in the correct position?"; the message remains visible until the acoustic advisor 8 is deactivated;
- passing the control to block 313.
- activating the acoustic advisor 8, that remains active until it is manually deactivate;
- displaying on the display a message of the type "The cassette has been moved from its original position; has the original position been re-stored?"; the message remains visible until the acoustic advisor 8 has been deactivate;
- passing the control to block 313.
Claims (27)
- Video cassette recorder, supplied with means (1) for receiving a television program, means (7) for recording the latter, a clock (4), a data memory (3), means (53) for storing in said memory (3) the time at which a program that is desired to be recorded begins and control means (2) for reading said clock (4) and said memory (3) and for activating said receiving means (1) and said means for recording (7) the television program at the indicated time or at a pre-determined interval of time before and the programming of the recording operation can be maintained without interfering with the normal use of the recorder, characterized by the fact that means (301, 304, 306, 308, 309) are provided for controlling, whether the recorder is used after having been programmed and by display means (302, 310, 6, 8) for displaying a warning message for the user whether such said use may have placed the recording of the program at risk.
- Video cassette recorder, according to claim 1, characterised by the fact it comprises timing means (5), independent from said control means (2) for determining the instant in which the recording operation begins.
- Video cassette recorder, according to claim 2, characterised by the fact that said timing means (5) comprise an electronic digital counter unit (Z8430) able to keep count of an interval of time of at least 24 hours and can be interfaced with said control means (2).
- Video cassette recorder, according to claim 2, characterised by the fact that said timing means (5) comprise an electronic digital counter unit (Z8430) able to keep count of an interval of time of at least 72 hours and can be interfaced with said control means (2).
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that said control means (2) comprise means (102) for:asking the user for the data to be inserted in memory 3;calculating the intervening interval between the actual time and the time of the forecasted activation for the recording;programming the device (5) for the calculated interval of time;starting the timer (5).
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that said control means (2) comprise means (201) for verifying whether reception, displaying, recording or reproducing activity is under way and means (203) for the display of a warning message for the user (of the type) "the programmed recording of channel X is about to begin; if not cancelled by the user by pressing key Y, it will regularly begin within one minute".
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that means (301) are provided for controlling whether the recorder is used after having been programmed, and means (302, 6) for displaying a warning message.
- Video cassette recorder, according to claim 8, characterised by the fact that said means for controlling whether, upon use of the recorder after having been programmed, the cassette has been removed, comprising an extracted cassette sensor.
- Video cassette recorder, according to claim 8, characterised by the fact that said cassette sensor remains active even in the stand by condition.
- Video cassette recorder, according to claim 1, characterised by the fact that said warning comprises the viewing of a message on the display (6).
- Video cassette recorder, according to claim 1, characterised by the fact that said warning comprises a sound signal produced by an acoustic advisor (8).
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that means (303, 305, 308, 311) are provided for controlling whether, upon use of the recorder after having been programmed, the cassette tape position has been changed and means (312, 6, 8) for warning the user.
- Video cassette recorder, according to claim 12, characterised by the fact that said tape position change sensor remains active even in the stand by position.
- Video cassette recorder, according to anyone of the previous claims, characterised by the fact that said means for controlling whether, upon use of the recorder (7) after having been programmed, the cassette tape position has been changed, comprise a signalling system for enabling the motor in forward or in rewind mode of the tape.
- Video cassette recorder, according to claim 12, characterised by the fact that said warning comprises the display of a message on the screen (6).
- Video cassette recorder, according to claim 13, characterised by the fact that said warning comprises a sound signal produced by an acoustic advisor (8).
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that it comprises circuitry mean (12) for decoding a transmitted label, associated to the television signal and containing for example a code number and the forecasted time of the beginning of the program.
- Video cassette recorder, according to claim 17, characterised by the fact that said circuitry means (12) for decoding a transmitted label, are those provided in the known system V.P.S. (Video Programming System).
- Video cassette recorder, according to any one of the previous claims, characterised by the fact that said control means (2) comprise a logic circuit realised with the wired logic system.
- Video cassette recorder, according to anyone of the previous claims, characterised by the fact that said control means (2) comprise a logic circuit realised with the programmed logic system, i.e. with the use of a microprocessor (Z8400).
- Video cassette recorder, according to claim 20, characterised by the fact that said control means (2) comprise means (102) for enabling the interrupt signals.
- Video cassette recorder, according to claim 20, characterised by the fact that said microprocessor (Z8400) is used for also managing other uses of the video cassette recorder.
- Video cassette recorder, according to claims 3 or 4, characterised by the fact that said electronic digital counter unit (Z8430) comprises a series of programmable counters, cascaded between themselves.
- Video cassette recorder, according to claim 23, characterised by the fact that at least one of said programmable counters is associated to a prescaler.
- Video cassette recorder, according to claim 23, characterised by the fact that said pre-scaler can be commutated between at least two divisional values.
- Video cassette recorder, according to claim 20, characterised by the fact that said electronic digital counter unit (Z8430) at the end of the count can be programmed to send an interrupt request to said microprocessor (Z8400).
- Video cassette recorder, according to claims 3 or 4, characterised by the fact that said electronic digital counter unit (Z8430) can be interfaced with said control means (2) by means of a data bus.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO910186A IT1245456B (en) | 1991-03-15 | 1991-03-15 | PERFECTED VIDEO RECORDER |
ITTO910186 | 1991-03-15 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0507119A1 EP0507119A1 (en) | 1992-10-07 |
EP0507119B1 true EP0507119B1 (en) | 1998-09-02 |
EP0507119B2 EP0507119B2 (en) | 2005-02-09 |
Family
ID=11409078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92104148A Expired - Lifetime EP0507119B2 (en) | 1991-03-15 | 1992-03-11 | Improved video cassette recorder |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0507119B2 (en) |
DE (1) | DE69226800T3 (en) |
ES (1) | ES2120967T5 (en) |
IT (1) | IT1245456B (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2649445C2 (en) * | 1976-10-29 | 1982-09-09 | Deutsche Itt Industries Gmbh, 7800 Freiburg | Television receiver with a built-in timer |
JPS5951054B2 (en) * | 1977-08-25 | 1984-12-12 | ソニー株式会社 | Recording/playback device |
JPS5626286A (en) * | 1979-08-10 | 1981-03-13 | Hitachi Ltd | Program timer |
DE3243610A1 (en) * | 1982-11-25 | 1984-05-30 | Philips Patentverwaltung Gmbh, 2000 Hamburg | ARRANGEMENT FOR PROGRAMMABLE CONTROL OF A BROADCASTING AND / OR TELEVISION RECEIVING DEVICE |
GB8816953D0 (en) * | 1988-07-15 | 1988-08-17 | Ferguson Ltd | Video recorder |
-
1991
- 1991-03-15 IT ITTO910186A patent/IT1245456B/en active IP Right Grant
-
1992
- 1992-03-11 ES ES92104148T patent/ES2120967T5/en not_active Expired - Lifetime
- 1992-03-11 DE DE69226800T patent/DE69226800T3/en not_active Expired - Lifetime
- 1992-03-11 EP EP92104148A patent/EP0507119B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
IT1245456B (en) | 1994-09-20 |
DE69226800T3 (en) | 2005-11-17 |
ES2120967T3 (en) | 1998-11-16 |
EP0507119B2 (en) | 2005-02-09 |
EP0507119A1 (en) | 1992-10-07 |
ES2120967T5 (en) | 2005-07-01 |
ITTO910186A1 (en) | 1992-09-15 |
DE69226800D1 (en) | 1998-10-08 |
ITTO910186A0 (en) | 1991-03-15 |
DE69226800T2 (en) | 1999-05-06 |
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