EP0274255A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Video disc reproducing device and method of reproducing video information
Assignee: Pioneer Corp
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Filing: 1987-12-16
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Granted: —
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Expires: 2007-12-16
Abstract
Abstract The invention concerns the prevention of output of noise to a television monitor during the existence of unusual conditions in a disk player. In one method, when the disk player is reproducing information recorded on a composite disk storing both audio and video information, and a search is conducted which requires the pickup (3) of the disk player to cross a boundary between the two regions (11,1b) on a composite disk, the most recently reproduced video information stored in a video memory (18) is repeatedly read and reproduced on a television monitor during the search. In second method, when an OFF condition of a main power supply is detected, the most recently read video information just prior to detection of the OFF condition is stored in a video memory, and is repeatedly read out until the disk player has been reinitialized. Additionally, the last known address of the pickup prior to power supply interruption may be stored, and the pickup moved back to that location so that the reproducing operation may be resumed without the need for an additional search by the user.
Inventors
- 👤 Masanao Okatani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:57
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N9/00; H04N9/79; H04N9/80; H04N9/802
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
97 words
A disk player which reproduces video information stored on an information recording disk, the player comprising means (21) for receiving, during reproduction of the video information from the information recording disk, an instruction to initiate a search; means (21) for determining, when the search has been initiated, whether a field of the video information has been stored in a video memory (18) of the player; and means (19) for reading out the field of video information repeatedly until the search is complete, provided that the field of video information has been stored in the video memory (18).
Claim 2
Dependent Claim
97 words
A disk player which reproduces video information stored on an information recording disk, the player comprising means (21) for receiving, during reproduction of the video information from the information recording disk, an instruction to initiate a search; means (21) for determining, when the search has been initiated, whether a field of the video information has been stored in a video memory (18) of the player; and means (19) for reading out the field of video information repeatedly until the search is complete, provided that the field of video information has been stored in the video memory (18).
Claim 3
Dependent Claim
69 words
A player as claimed in claim 1, for use with an information recording disk comprising a first region (1a) for storing audio information and a second region (1b) for storing video information, further including means (5,6,37) for moving a pickup (3) of the disk player in both of the first and second regions, the reading means reading out the field of video information repeatedly during movement of the pickup.
Claim 4
Dependent Claim
46 words
A player as claimed in claim 1 or claim 2, wherein, if the field of video information has not been stored in the video memory, the reading means is arranged to read out other video information to a television monitor during reinitialization of the disk player.
Claim 5
Dependent Claim
16 words
A player as claimed in claim 3, wherein the other video information comprises blue picture information.
Claim 6
Dependent Claim
23 words
A player as claimed in claim 3, wherein the reading means is arranged to generate the other video information from a picture generator.
Claim 7
Dependent Claim
143 words
A disk player for reproducing video information stored on an information recording disk, the player comprising a video memory (18) for storing at least one field of video information; a main power supply; a backup power supply which provides power to the video memory during interruption of the main power supply; means (19) for storing in the video memory, during a reproducing operation in which the video information is reproduced by the disk player from the information recording disk, a most recent field of video information; and means (19,21) for repeatedly reading the field of video information stored in the video memory during an off condition of the main power supply, and for repeatedly reading the field of video information, even after detection of an on condition of the main power supply, during reinitialization of the disk player, until the reinitialization is complete.
Claim 8
Dependent Claim
143 words
A disk player for reproducing video information stored on an information recording disk, the player comprising a video memory (18) for storing at least one field of video information; a main power supply; a backup power supply which provides power to the video memory during interruption of the main power supply; means (19) for storing in the video memory, during a reproducing operation in which the video information is reproduced by the disk player from the information recording disk, a most recent field of video information; and means (19,21) for repeatedly reading the field of video information stored in the video memory during an off condition of the main power supply, and for repeatedly reading the field of video information, even after detection of an on condition of the main power supply, during reinitialization of the disk player, until the reinitialization is complete.
Claim 9
Dependent Claim
73 words
A player according to claim 6, for use with an information recording disk which comprises a composite disk for storing audio information in a first region (la) thereof, and video information in a second region (1b) thereof, further including means (21) for storing a most recent address indicative of a location of a pickup of the disk; and means for returning the pickup to the said location after reinitialization of the disk player.
Claim 10
Independent Claim
95 words
A method of operating a disk player which reproduces video information stored on an information recording disk, the method comprising the steps of: during reproduction of the video information from the information recording disk, providing an instruction to initiate a search; when the search has been initiated, determining whether a field of the video information has been stored in a video memory (18) of the disk player; and if the field of the video information has been stored in the video memory, reading out the field of video information repeatedly until the search is complete.
Claim 11
Independent Claim
95 words
A method of operating a disk player which reproduces video information stored on an information recording disk, the method comprising the steps of: during reproduction of the video information from the information recording disk, providing an instruction to initiate a search; when the search has been initiated, determining whether a field of the video information has been stored in a video memory (18) of the disk player; and if the field of the video information has been stored in the video memory, reading out the field of video information repeatedly until the search is complete.
Claim 12
Dependent Claim
71 words
A method as claimed in Claim 8, wherein the information recording disk comprises a first region (1a) for storing audio information and a second region (1b) for storing video information, the method further including the step of moving a pickup (3) of the disk player in both of the first and second regions, the step of reading out the field of video information being performed repeatedly during movement of the pickup.
Claim 13
Dependent Claim
46 words
A method as claimed in claim 8 or claim 9, wherein, if the field of video information has not been stored in the video memory, the method comprises the step of reading out other video information to a television monitor during reinitialization of the disk player.
Claim 14
Dependent Claim
16 words
A method as claimed in Claim 10, wherein the other video information comprises blue picture information.
Claim 15
Dependent Claim
30 words
A method as claimed in Claim 10, wherein the step of reading out the other video information comprises the step of generating the other video information from a picture generator.
Claim 16
Independent Claim
163 words
A method of operating a disk player, to reproduce video information stored on an information recording disk, the disk player comprising a video memory (18) for storing at least one field of video information, a main power supply, and a backup power supply which provides power to the video memory during interruption of the main power supply, the method comprising, during a reproducing operation in which the video information is reproduced by the disk player from the information recording disk, storing a most recent field of video information in the video memory just prior to detection of an OFF condition of the main power supply; and, during the OFF condition of the main power supply, repeatedly reading the field of video information stored in the video memory, the step of repeatedly reading the field of video information being carried out even after detection of an ON condition of the main power supply, during reinitialization of the disk player, until the reinitialization is complete.
Claim 17
Independent Claim
163 words
A method of operating a disk player, to reproduce video information stored on an information recording disk, the disk player comprising a video memory (18) for storing at least one field of video information, a main power supply, and a backup power supply which provides power to the video memory during interruption of the main power supply, the method comprising, during a reproducing operation in which the video information is reproduced by the disk player from the information recording disk, storing a most recent field of video information in the video memory just prior to detection of an OFF condition of the main power supply; and, during the OFF condition of the main power supply, repeatedly reading the field of video information stored in the video memory, the step of repeatedly reading the field of video information being carried out even after detection of an ON condition of the main power supply, during reinitialization of the disk player, until the reinitialization is complete.
Claim 18
Dependent Claim
23 words
A method as claimed in claim 13, wherein the information recording disk comprises a disk on which only the video information is stored.
Claim 19
Dependent Claim
35 words
A method as claimed in claim 13, wherein the information recording disk comprises a composite disk for storing audio information in a first region (1a) thereof, and video information in a second region (1b) thereof.
Claim 20
Dependent Claim
60 words
A method as claimed in claim 15, wherein the storing step includes the step of storing a most recent address indicative of a location of a pickup of the disk player just prior to the detection of the off condition; the method further comprising the step of returning the pickup of the location after the reinitilization of the disk player.
References Cited (Backward Citations)
No citation records indexed.
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