US5153740A — Recording and demodulation devices for electronic…

Claim 1

Independent Claim 168 words

In still video recorder or the like, a device for reproducing signals from a recording medium on which there is recorded a modulated code signal f ID , obtained by modulating a data signal ID in accordance with a DPSK modulation mode, and modulated color difference signals f B-Y and f R-Y , obtained by frequency modulating respective color difference signals B-Y and R-Y, are recorded in the same track on said recording medium by multiplex recording, a demodulating device for the data signal comprising: line discriminating means for discriminating horizontal period in a reproduced signal f ID read from said recording medium in which respective color difference signals B-Y and R-Y are being reproduced; timer means operating during periods of said color difference signal B-Y as indicated by said line discriminating means for indicating predetermined time points on said reproduced signal during said color difference signal B-Y; and means for reading data from said reproduced signal f ID at said predetermined times indicated by said timer means.

Claim 2

Dependent Claim 168 words

In still video recorder or the like, a device for reproducing signals from a recording medium on which there is recorded a modulated code signal f ID , obtained by modulating a data signal ID in accordance with a DPSK modulation mode, and modulated color difference signals f B-Y and f R-Y , obtained by frequency modulating respective color difference signals B-Y and R-Y, are recorded in the same track on said recording medium by multiplex recording, a demodulating device for the data signal comprising: line discriminating means for discriminating horizontal period in a reproduced signal f ID read from said recording medium in which respective color difference signals B-Y and R-Y are being reproduced; timer means operating during periods of said color difference signal B-Y as indicated by said line discriminating means for indicating predetermined time points on said reproduced signal during said color difference signal B-Y; and means for reading data from said reproduced signal f ID at said predetermined times indicated by said timer means.

Claim 3

Dependent Claim 27 words

The demodulating device of claim 1, further comprising means for determining a phase of said reproduced signal in response to said data read from said reproduced signal.

Claim 4

Dependent Claim 37 words

The demodulating device of claim 1, further comprising a counter for counting horizontal synchronizing periods with respect to a preceding vertical synchronizing signal for triggering said timer at predetermined horizontal synchronizing periods within said horizontal synchronizing signal.

Claim 5

Dependent Claim 58 words

The demodulating device of claim 3, wherein, for a 4 H mode portion of said horizontal synchronizing signal, said timer is triggered by said counter at (24+4n+1)-th horizontal synchronizing signal periods as counted from a preceding vertical synchronizing signal, and said timer carries out a count operation during (24+4n+2)-th horizontal synchronizing periods, where n is a positive integer.

Claim 6

Dependent Claim 58 words

The demodulating device of claim 3, wherein, for a 2 H mode portion of said horizontal synchronizing signal, said timer is triggered by said counter at (143+2n)-th horizontal synchronizing signal periods as counted from a preceding vertical synchronizing signal, and said timer carries out a count operation during (143+2n+1)-th horizontal synchronizing periods, where n is a positive integer.

Claim 7

Dependent Claim 26 words

The demodulating device of claim 1, wherein said predetermined time points are three in number and are within a single half cycle of said reproduced signal.

Claim 8

Dependent Claim 160 words

In a still video camera or the like, a recording device comprising: switching means for switching between color difference signals B-Y and R-Y to form a line sequential signal for alternate 1 H periods of a horizontal synchronizing signal; means for recording said line sequential signal in multiplex form together with a data signal ID on the same track on a recording medium; control means for producing a reset pulse Pr for a period of 0.5 to 1 H in response to triggering by a pulse of a vertical synchronizing signal V-SYNC; and means for driving said switching means, said driving means being toggled between first and second states for every pulse of said horizontal synchronizing signal H-SYNC and being reset to said second state by said reset pulse Pr, said driving means in said first state setting said switching means to switch through said color difference signal B-Y in a first horizontal synchronizing period following said reset pulse Pr.

Claim 9

Dependent Claim 160 words

In a still video camera or the like, a recording device comprising: switching means for switching between color difference signals B-Y and R-Y to form a line sequential signal for alternate 1 H periods of a horizontal synchronizing signal; means for recording said line sequential signal in multiplex form together with a data signal ID on the same track on a recording medium; control means for producing a reset pulse Pr for a period of 0.5 to 1 H in response to triggering by a pulse of a vertical synchronizing signal V-SYNC; and means for driving said switching means, said driving means being toggled between first and second states for every pulse of said horizontal synchronizing signal H-SYNC and being reset to said second state by said reset pulse Pr, said driving means in said first state setting said switching means to switch through said color difference signal B-Y in a first horizontal synchronizing period following said reset pulse Pr.

Claim 10

Dependent Claim 38 words

The recording device of claim 7, wherein said control means comprises a monostable multivibrator triggered by a leading edge of said vertical synchronizing, signal V-SYNC, said monostable multivibrator having an output pulse period of greater than 0.5 H.

Claim 11

Dependent Claim 46 words

The recording device of claim 8, wherein said driving means comprises a flip-flop connected in a toggle mode, said flip-flop having said horizontal synchronizing signal H-SYNC applied to a clock input terminal thereof and a output of said monostable multivibrator applied to a reset input thereof.

Claim 12

Dependent Claim 85 words

In a still video recorder or the like, a device for reproducing signals from a recording medium on which there is recorded a DPSK-modulated code signal F ID and frequency-modulated color difference signals F B-Y and F R-Y are recorded by multiplex recording, a demodulating device for a data signal comprising: discriminating means for discriminating a period during which a signal B-Y is being reproduced from said recording medium; and means for demodulating said signal f ID during said period discriminated by said discriminating means.

Claim 13

Dependent Claim 85 words

In a still video recorder or the like, a device for reproducing signals from a recording medium on which there is recorded a DPSK-modulated code signal F ID and frequency-modulated color difference signals F B-Y and F R-Y are recorded by multiplex recording, a demodulating device for a data signal comprising: discriminating means for discriminating a period during which a signal B-Y is being reproduced from said recording medium; and means for demodulating said signal f ID during said period discriminated by said discriminating means.

Claim 14

Dependent Claim 143 words

A recording device in a still video camera comprising: means for recording to a recording medium, together with an ID data subjected to a DPSK modulation, a signal f R-Y which is obtained by subjecting a color difference signal R-Y to frequency modulation, during every other 1H period with the first period of recording of said signal f R-Y during recording of even-numbered fields beginning substantially from a leading edge of a vertical synchronizing signal; and means for recording to said recording medium, together with the DPSK modulated ID data, a signal F R-Y which is obtained by subjecting a color difference signal R-Y to frequency modulation during every other 1 H period, with the first period of recording of said signal f R-Y during recording of odd-numbered fields beginning substantially 0.5 H period from the leading edge of the vertical synchronizing signal.

Claim 15

Dependent Claim 143 words

A recording device in a still video camera comprising: means for recording to a recording medium, together with an ID data subjected to a DPSK modulation, a signal f R-Y which is obtained by subjecting a color difference signal R-Y to frequency modulation, during every other 1H period with the first period of recording of said signal f R-Y during recording of even-numbered fields beginning substantially from a leading edge of a vertical synchronizing signal; and means for recording to said recording medium, together with the DPSK modulated ID data, a signal F R-Y which is obtained by subjecting a color difference signal R-Y to frequency modulation during every other 1 H period, with the first period of recording of said signal f R-Y during recording of odd-numbered fields beginning substantially 0.5 H period from the leading edge of the vertical synchronizing signal.

Claim 16

Dependent Claim 106 words

In a still video camera or the like, a recording device comprising: switching means for switching between colored difference signals B-Y and R-Y, in response to a switching control signal having first and second states to form a line sequential signal for alternate 1 H periods of a horizontal synchronizing signal; means for recording said line sequential signal in multiplex form together with a data signal ID on the same track on a recording medium; and switching control signal generating means for generating said switching control signal with a first phase during recording of even-numbered fields and with a second phase during recording of odd-numbered fields.

Claim 17

Dependent Claim 106 words

In a still video camera or the like, a recording device comprising: switching means for switching between colored difference signals B-Y and R-Y, in response to a switching control signal having first and second states to form a line sequential signal for alternate 1 H periods of a horizontal synchronizing signal; means for recording said line sequential signal in multiplex form together with a data signal ID on the same track on a recording medium; and switching control signal generating means for generating said switching control signal with a first phase during recording of even-numbered fields and with a second phase during recording of odd-numbered fields.

Claim 18

Dependent Claim 69 words

The recording device of claim 12 ,wherein, for recording of even-numbered fields, transitions between said first and second states of said switching control signal occur substantially at integer multiples of a 1 H period from a vertical synchronizing signal, and for recording of odd-numbered fields the transitions between said first and second states occur substantially at odd integer multiples of a 0.5 H period from said vertical synchronizing signal.

Claim 19

Dependent Claim 53 words

The recording device of claim 13, wherein said switching means passes said signal B-Y in response to a first state of said switching control signal, and the first transition from said second state to said first state occurs more than a 1 H period after the leading edge of said vertical synchronizing signal.

Claim 20

Dependent Claim 98 words

In a device for reproducing signals from a recording medium on which there is recorded a modulated data signal f ID and modulated first and second color signals, a demodulating device for the data signal comprising: line discriminating means for discriminating horizontal periods in a reproduced signal f ID read from said recording medium; timer means operating during periods of said first color signal for indicating predetermined time points on said reproduced signal during said first color signal; and means for reading data from said reproduced signal f ID at said predetermined times indicated by said timer means.

Claim 21

Dependent Claim 98 words

In a device for reproducing signals from a recording medium on which there is recorded a modulated data signal f ID and modulated first and second color signals, a demodulating device for the data signal comprising: line discriminating means for discriminating horizontal periods in a reproduced signal f ID read from said recording medium; timer means operating during periods of said first color signal for indicating predetermined time points on said reproduced signal during said first color signal; and means for reading data from said reproduced signal f ID at said predetermined times indicated by said timer means.

Claim 22

Dependent Claim 143 words

A recording device comprising: switching means for switching between first and second color signals during alternate horizontal intervals in response to a switching control signal having first and second states to form a line sequential signal having vertical intervals each including a plurality of horizontal intervals; means for recording said line sequential signal together with a data signal ID on a recording medium; control means for producing a reset pulse PR at least once during each vertical interval; and means for driving said switching means, said driving means being toggled between first and second states for every horizontal interval and being reset to said second state by said reset pulse Pr, said driving means in said first state setting said switching means to switch through one of said first and second color signals in a first horizontal interval following said reset pulse Pr.

Claim 23

Dependent Claim 143 words

A recording device comprising: switching means for switching between first and second color signals during alternate horizontal intervals in response to a switching control signal having first and second states to form a line sequential signal having vertical intervals each including a plurality of horizontal intervals; means for recording said line sequential signal together with a data signal ID on a recording medium; control means for producing a reset pulse PR at least once during each vertical interval; and means for driving said switching means, said driving means being toggled between first and second states for every horizontal interval and being reset to said second state by said reset pulse Pr, said driving means in said first state setting said switching means to switch through one of said first and second color signals in a first horizontal interval following said reset pulse Pr.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-10-06	1996-04-06	1996-10-06	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-10-06	2000-04-06	2000-10-06	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-10-06	2004-04-06	2004-10-06	$7700.00	Window Closed / Lapsed

Recording and demodulation devices for electronic still camera

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