JP2000356984A5 - - Google Patents

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JP2000356984A5
JP2000356984A5 JP1999167485A JP16748599A JP2000356984A5 JP 2000356984 A5 JP2000356984 A5 JP 2000356984A5 JP 1999167485 A JP1999167485 A JP 1999167485A JP 16748599 A JP16748599 A JP 16748599A JP 2000356984 A5 JP2000356984 A5 JP 2000356984A5
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reading
image data
read
data
storage means
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JP1999167485A
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JP2000356984A (en
JP4717168B2 (en
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【特許請求の範囲】
【請求項1】 輝度データ及び色差データから構成される画像データを記憶する第1記憶手段と、
第1周期で前記第1記憶手段の前記画像データを読み出す読出手段と、
前記読出手段に対する読出リクエストの発行を制御することにより、前記第1周期に同期して前記読み出された画像データを一時的な記憶領域に書き込み、前記第1周期とは非同期に前記一時的な記憶領域の画像データを読み出す第2記憶手段と、
を備えることを特徴とする画像処理装置。
【請求項2】 前記第2記憶手段からの非同期な読み出しは、読み出し後の画像データに対するテレビ信号処理に同期した読み出しであることを特徴とする請求項1に記載の画像処理装置。
【請求項3】 前記テレビ信号処理は、NTSC規格及びPAL規格のうち少なくとも1つのための信号処理であることを特徴とする請求項2に記載の画像処理装置。
【請求項4】 前記第2記憶手段は、前記一時的な記憶領域の記憶状態に応じて、前記読出手段の読み出し動作を異ならせる少なくとも2段階の読出リクエストを切り替えて発行することを特徴とする請求項1に記載の画像処理装置。
【請求項5】 前記2段階の読出リクエストのうちの1つのリクエストは、前記読出手段による前記第1記憶手段へのアクセス優先度が、他のリクエストのアクセス優先度よりも高位であることを特徴とする請求項4に記載の画像処理装置。
【請求項6】 前記第2記憶手段からの非同期な読み出しは、読み出し後の画像データに対するテレビ信号処理に同期した読み出しであり、前記第2記憶手段は、前記テレビ信号処理の垂直ブランキング期間であるか否かに応じて、前記少なくとも2段階の読出リクエスト発行の切り替え方を変更することを特徴とする請求項4または5に記載の画像処理装置。
【請求項7】 前記第2記憶手段からの非同期な読み出しは、読み出し後の画像データに対するテレビ信号処理に同期した読み出しであり、前記第2記憶手段は、前記テレビ信号処理の垂直ブランキング期間に入ったことに応じて、前記一時的な記憶領域のデータをクリアすることを特徴とする請求項4〜6のいずれかに記載の画像処理装置。
【請求項8】 被写体を撮影するための撮像手段と、前記撮像手段により撮影されたデータを輝度データと色差データとに分けて処理する処理手段とをさらに備え、前記第1記憶手段は前記処理手段により処理されたデータを記憶することを特徴とする請求項1〜7のいずれかに記載の画像処理装置。
【請求項9】 第1記憶手段に記憶された輝度データ及び色差データから構成される画像データに対する画像処理方法であって、
第1周期で前記第1記憶手段の前記画像データを読み出す読出手段に対する読出リクエストの発行を制御することにより、前記第1周期に同期して前記読み出された画像データを一時的な記憶領域に書き込み、前記第1周期とは非同期に前記一時的な記憶領域の画像データを読み出すアクセス制御ステップ、を備えることを特徴とする画像処理方法。
【請求項10】 第1記憶手段に記憶された輝度データ及び色差データから構成される画像データに対する画像処理方法を実行するためのプログラムを記録した記録媒体であって、
第1周期で前記第1記憶手段の前記画像データを読み出す読出手段に対する読出リクエストの発行を制御することにより、前記第1周期に同期して前記読み出された画像データを一時的な記憶領域に書き込み、前記第1周期とは非同期に前記一時的な記憶領域の画像データを読み出すアクセス制御コード、を記録したことを特徴とする記録媒体。
[Claims]
1. A first storage means for storing image data composed of luminance data and color difference data.
A reading means for reading the image data of the first storage means in the first cycle, and
By controlling the issuance of the read request to the reading means, the read image data is written to the temporary storage area in synchronization with the first cycle, and the temporary storage is asynchronous with the first cycle. A second storage means for reading image data in the storage area,
An image processing device comprising.
2. The image processing apparatus according to claim 1, wherein the asynchronous reading from the second storage means is reading synchronized with the television signal processing of the image data after reading.
3. The image processing apparatus according to claim 2, wherein the television signal processing is signal processing for at least one of an NTSC standard and a PAL standard.
4. The second storage means switches and issues at least two stages of read requests that make the read operation of the read means different according to the storage state of the temporary storage area. The image processing apparatus according to claim 1.
5. One of the two-stage read requests is characterized in that the access priority of the read means to the first storage means is higher than the access priority of the other requests. The image processing apparatus according to claim 4.
6. The asynchronous read from the second storage means is a read synchronized with the television signal processing of the image data after the readout, and the second storage means is in the vertical blanking period of the television signal processing. The image processing apparatus according to claim 4 or 5, wherein the method of switching the issuance of a read request in at least two steps is changed depending on whether or not the image processing apparatus is present.
7. The asynchronous read from the second storage means is a read synchronized with the television signal processing of the image data after the readout, and the second storage means is used during the vertical blanking period of the television signal processing. The image processing apparatus according to any one of claims 4 to 6, wherein the data in the temporary storage area is cleared according to the entry.
8. An image pickup means for photographing a subject and a processing means for processing the data photographed by the image pickup means by dividing the data into luminance data and color difference data are further provided, and the first storage means is the processing. The image processing apparatus according to any one of claims 1 to 7, wherein the data processed by the means is stored.
9. An image processing method for image data composed of luminance data and color difference data stored in the first storage means.
By controlling the issuance of a read request to the reading means for reading the image data of the first storage means in the first cycle, the read image data is stored in a temporary storage area in synchronization with the first cycle. An image processing method comprising writing and an access control step of reading image data of the temporary storage area asynchronously with the first cycle.
10. A recording medium on which a program for executing an image processing method for image data composed of luminance data and color difference data stored in the first storage means is recorded.
By controlling the issuance of a read request to the reading means for reading the image data of the first storage means in the first cycle, the read image data is stored in a temporary storage area in synchronization with the first cycle. A recording medium characterized by writing and recording an access control code for reading image data in the temporary storage area asynchronously with the first period.

【0023】
【課題を解決するための手段】
本発明の画像処理装置は、輝度データ及び色差データから構成される画像データを記憶する第1記憶手段と、第1周期で前記第1記憶手段の前記画像データを読み出す読出手段と、前記読出手段に対する読出リクエストの発行を制御することにより、前記第1周期に同期して前記読み出された画像データを一時的な記憶領域に書き込み、前記第1周期とは非同期に前記一時的な記憶領域の画像データを読み出す第2記憶手段と、を備えることを特徴とする。
[0023]
[Means for solving problems]
The image processing apparatus of the present invention includes a first storage means for storing image data composed of brightness data and color difference data, a reading means for reading the image data of the first storage means in a first cycle, and the reading means. By controlling the issuance of a read request to the temporary storage area, the read image data is written to the temporary storage area in synchronization with the first cycle, and the temporary storage area is synchronized with the first cycle. It is characterized by including a second storage means for reading image data.

JP16748599A 1999-06-14 1999-06-14 Signal processing apparatus and signal processing method Expired - Fee Related JP4717168B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16748599A JP4717168B2 (en) 1999-06-14 1999-06-14 Signal processing apparatus and signal processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16748599A JP4717168B2 (en) 1999-06-14 1999-06-14 Signal processing apparatus and signal processing method

Publications (3)

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JP2000356984A JP2000356984A (en) 2000-12-26
JP2000356984A5 true JP2000356984A5 (en) 2006-08-03
JP4717168B2 JP4717168B2 (en) 2011-07-06

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4707964B2 (en) * 2004-04-19 2011-06-22 三菱電機株式会社 Graphics drawing device
JP2007133295A (en) * 2005-11-14 2007-05-31 Epson Imaging Devices Corp Image processing apparatus, and electronic equipment
JP5962328B2 (en) 2012-08-21 2016-08-03 株式会社ソシオネクスト Data transfer device, data transfer method, and semiconductor device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5859649A (en) * 1995-05-15 1999-01-12 Motorola, Inc. Data processing system having display controller with bursting direct memory access
US5673416A (en) * 1995-06-07 1997-09-30 Seiko Epson Corporation Memory request and control unit including a mechanism for issuing and removing requests for memory access
JP3758753B2 (en) * 1996-08-20 2006-03-22 株式会社ソニー・コンピュータエンタテインメント Data transfer apparatus and data transfer method
JPH118827A (en) * 1997-04-22 1999-01-12 Casio Comput Co Ltd Imaging device and imaging method
US6119207A (en) * 1998-08-20 2000-09-12 Seiko Epson Corporation Low priority FIFO request assignment for DRAM access

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